How to backup user on Linux

Backup the following files:
/etc/passwd
/etc/shadow
/etc/group
/etc/samba/*
/home/*
If you have to rebuild, you can just copy these files back to their
original locations then restart Samba. All of your Linux and Samba
user accounts will be recreated. It's as simple as that

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Intranet network advantages mentioned above:
1. Simplify network cabling process Network Engineer.
2. The use of cable networks is relatively small (in size).

Intranet Network losses mentioned above:
1. There are nodes that result in collision 
2. The use of cable a relatively more (in size).


Based on CCNA [3], if viewed from the network there are some good collision in loading data to the server or Internet connection, namely between the APU switch to switch MBC1 and Switch Switch HRD with Accounting.
 effects of the collision above is the use of greater bandwidth in one network, so that local network traffic becomes congested.

On the other hand Internet Protocol / IP that is in use is the IP class A, ie starting with the default 126 255 255 254 1.0.0.1 Subnet to 255.0.0.0, so that the IP that we use is a class A with an IP Subnet 255.255.255.0, which means that IP that we use have an IP subnet of a class A which has a number of PC 254.

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Distribution of Operating System in My Intranet

I dont Know, that word just out my mouth, last 4 years ago on my office use linux operatyng system, microsoft just 25 %, just finance dept use microsoft, but now after 4 years, moving - moving go microsoft, but i am as Admin doesn't like it.  i must often control my system from any hole from microsoft, it's very tired.

on Side, My Server use Linux, i feel enjoy with my server, not give me constrain.   so I want to fight for opensource in order to used in my company, always.

that just my word ......

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Check Port

Examining the port is open is a tool you can use to check your external IP address and detect open ports on your connection. This tool is useful to find out if your port forwarding setup correctly or if your server application is being blocked by a firewall.This tool can also be used as a port scanner to scan your network to a port that is usually forwarded. It is important to note that some ports, like port 25, often blocked at the ISP in an attempt to prevent malicious activity. do you want check port your system, visit http://www.yougetsignal.com/tools/open-ports/

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Formula Granting Salary Increase and Bonuses

Year 2010 has been greeted sweet. So approximately what percentage of your salary will be raised by your office work? And how about a bonus that you receive? Of course the higher, the better - because if you wrote so much for, well ... .. the price of a kilo of chilli sauce pan will rise again soon. If salary naeknya so much for aja and bonus zero, where we can make life saving for the future?
Ideally the amount of increase in salaries and bonuses that could also be fair: that those who are performing well of course entitled to a percent increase in salary and bonuses are more fantastic than those who work and quality ngasal Brekele.
Unfortunately, building a system capable of distinguishing great perfomers with poor performers not as easily make instant noodle stew. As a result, there are many companies who then generalize the amount of annual salary increases and bonuses to all employees. No matter that some of them really work hard sweat, and some also work spurious.
Of course it would be afdol if there is a mechanism that makes the increase of salaries and bonuses could be more fair. Here are two formulas or methods that are sometimes used by companies to make a differentiation between a good employee who did not.
Rank Forced method. This method is partly driven by a sense of dismay the management was reluctant to see the boss (or embarrassed and afraid) to distinguish employees work performance. As a result we often see the boss gives an A all the subordinates (I do not have the heart to pack if you have to love me the value of C to the staff, so "beautiful reasons" that appears. Duh!).
So then came the idea of forced rank. This method is essentially forcing the bosses to rank his men, from highest to lowest. For example, if a boss has 5 kids fruit, then he must rank fifth, ranging from who is at rank number one and number five (ranking criteria refers to the daily performance of his men).
Through this method of forced rank, the bosses are forced to seriously identify who has a good performance (and therefore worthy to rank number 1), who's number 2, and so on. With this method, then the boss no longer can no longer perform the generalization assessments to their subordinates (which often hide the fact that some of his subordinates are better than others).
Slowly, through a system of forced rank, then created a mechanism to differentiate their differentiation and are not robust. Of course, for those who rank higher then deserved salary increases and bonuses are larger than the rank is rated lower.
Normal Distribution Method. This method actually has a similarity with forced rank. Both depart from the spirit that there should be a division between a good performance with a mediocre. But if forced to force rank ranking division one by one (from the number one ranking until the very bottom), then the normal distribution method based on distribution of performance percentage, and is usually applied at the level of department / division.
For instance, the marketing division has 100 employees, the rating assessment of employees should be distributed normally: ie, only 20% are eligible to receive an A, 60% received a B, and 20% get the value of C (compositions can also be as follows: ration value A = 20%, the value of B = 30%, the value C = 30%, and the quota value of D = 20%). In essence, the assessment rating of A s / d C or D should be distributed equally, and should not be all piled on the value A.
Just as forced rank, the normal distribution method has also insisted that every department is not extravagant to give an A to all employees, and should be more objective in distinguishing between who has a good performance with a no.
Both methods of forced rank and normal distributions encourage every employer to make distinctions of performance ratings to their subordinates. It is expected that in this way, the amount of increase in salaries and bonuses could be more fair.

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Wikileaks still Live

Although expelled and there, WikiLeaks still looking for ways to be able to divulge confidential information the U.S. government (U.S.).Whistleblower site is now providing four new domains that can be accessed internet users.
Through his official Twitter account, WikiLeaks said that the site can now be accessed through the address http://wikileaks.de/, http://wikileaks.fi/ and http://wikileaks.nl/
Tweet posted about 14 hours ago This shows that the Wikileaks domain are now sheltering in the countries in Europe. as is known, wikiLeaks.de address refers to Germany, Finland and wikiLeaks.nl wikiLeaks.fi to refer the Netherlands.
Previously, about 22 hours ago, WikiLeaks also reported that its site is now moved to Switzerland and can be accessed through http://wikileaks.ch/.

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CCNA Exploration 4.0: Network Fundamentals - Chapter 10 Exam Answers

1

Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.)

connecting a PC to a router's console port
* connecting two routers together via their fast ethernet ports
* connecting two switches together at gigabit speeds
connecting a PC to a switch at Gigabit Ethernet speeds
connecting two devices with the same interface type at Fast Ethernet speeds

2
Which three statements are true about the role of routers in the network? (Choose three.)
They propagate broadcasts.
They enlarge collision domains.
They segment broadcast domains.
* They interconnect different network technologies.
* Each router interface requires a separate network or subnet.
* They maintain a common frame format between LAN and WAN interfaces.

3
Refer to the exhibit. A network administrator has decided to use packet capture software to evaluate all traffic from the student subnet on the way to the Internet. To ensure that all packets are captured, what network device should be used to connect the monitoring station to the network between R1 and R2?
* router
hub
switch
wireless access point

4
A network administrator is required to use media in the network that can run up to 100 meters in cable length without using repeaters. The chosen media must be inexpensive and easily installed. The installation will be in a pre-existing building with limited cabling space. Which type of media would best meet these requirements?
STP
* UTP
coaxial
single-mode fiber
multimode fiber

5
Refer to the exhibit. Which three statements are true about the exhibited topology? (Choose three.)
Hosts B and C are in the same subnet.
* Five broadcast domains are present.
* Host B is using a crossover cable to connect to the router.
Four broadcast domains are present.
xFive networks are shown.
Host B is using a rollover cable to connect to the router.

6
Which three types of connectors are commonly associated with Cisco's V.35 serial cables? (Choose three.)
RJ 11
* DB 60
* Winchester 15 pin
DB 9
* smart serial
RJ 45

7
How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0?
30
256
* 2046
2048
4094
4096

8
Refer to the exhibit. Based on the IP configuration shown, what would be the result of Host A and Host B attempting to communicate outside the network segment?
both host A and B would be successful
* host A would be successful, host B would fail
host B would be successful, host A would fail
both Host A and B would fail

9
Refer to the exhibit. What destination IP address will PC1 place in the header for a packet destined for PC2?
192.168.1.1
192.168.2.1
192.168.2.2
192.168.3.1
* 192.168.3.54

10
Refer to the exhibit. Which three statements identify the type of cabling that would be used in the segments that are shown? (Choose three.)
Segment 1 uses backbone cabling.
* Segment 1 uses a patch cable.
Segment 3 uses patch cabling.
Segment 3 uses vertical cabling.
* Segment 3 uses horizontal cabling.
* Segment 4 uses vertical cabling.

11
A company is planning to subnet its network for a maximum of 27 hosts. Which subnet mask would provide the needed hosts and leave the fewest unused addresses in each subnet?
255.255.255.0
255.255.255.192
* 255.255.255.224
255.255.255.240
255.255.255.248

12
Refer to the exhibit. A student is setting up a home network primarily used for extensive file transfers, streaming video, and gaming. Which network device is best suited to these types of activities in the topology shown?
wireless access point
router
hub
* switch

13
Refer to the exhibit. How many subnets are required to support the network that is shown?
2
* 3
4
5

14 

Attenuation

What does the term "attenuation" mean in data communication?
* loss of signal strength as distance increases
time for a signal to reach its destination
leakage of signals from one cable pair to another
strengthening of a signal by a networking device

15 

To establish a console connection from a computer to a Cisco router, which cable wiring option would be used?
* crossover cable
straight through cable
rollover cable
V.35 cable

16
What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)
* greater distances per cable run
lower installation cost
xlimited susceptibility to EMI/RFI
durable connections
xgreater bandwidth potential
easily terminated

17

Refer to the exhibit. A network technician has been allocated the 192.168.1.0/24 private IP address range for use in the network that shown in the exhibit. Which subnet mask would be used to meet the host requirements for segment A of this internetwork?

* 255.255.255.128
255.255.255.192
255.255.255.224
255.255.255.240
255.255.255.248

18
Which subnet mask would be assigned to the network address of 192.168.32.0 to provide 254 useable host addresses per subnetwork?
255.255.0.0
* 255.255.255.0
255.255.254.0
255.255.248.0

19

What type of network cable is used between a terminal and a console port?
cross-over
straight-through
* roll-over
patch cable

20
Which option identifies the primary interface which would be used for initial configuration of a Cisco router?
AUX interface
Ethernet interface
serial interface
* console interface

21

What are three common methods for setting a UTP Ethernet port to MDI or MDIX operation? (Choose three.)
direct configuration of the device
* cable color code association
cable selection and configuration
use of cable testers to determine pinouts
* the enabling of the mechanism to electrically swap the transmit and receive pairs
* the automatic detection and negotiating of MDI/MDIX operation of the port

22

Which device is used to create or divide broadcast domains?
hub
switch
bridge
* router
repeater

23

Refer to the exhibit. Assume that all devices are using default settings. How many subnets are required to address the topology that is shown?
1
3
4
* 5
7

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CCNA Exploration 4.0: Network Fundamentals - Chapter 9 Exam Answers

1. 

In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?

Host B can transmit immediately since it is connected on its own cable segment.
Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
Host B must send a request signal to Host A by transmitting an interframe gap.
* Host B must wait until it is certain that Host A has completed sending its frame.

2 Ethernet operates at which layers of the OSI model? (Choose two.)

Network layer
Transport layer
* Physical layer
Application layer
Session layer
* Data-link layer

3 Which of the following describe interframe spacing? (Choose two.)

* the minimum interval, measured in bit-times, that any station must wait before sending another frame
the maximum interval, measured in bit-times, that any station must wait before sending another frame
the 96-bit payload padding inserted into a frame to achieve a legal frame size
the 96-bit frame padding transmitted between frames to achieve proper synchronization
* the time allowed for slow stations to process a frame and prepare for the next frame
the maximum interval within which a station must send another frame to avoid being considered unreachable

4 What three primary functions does data link layer encapsulation provide? (Choose three.)

* addressing
* error detection
* frame delimiting
port identification
path determination
IP address resolution

5 When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?

* The hosts return to a listen-before-transmit mode.
The hosts creating the collision have priority to send data.
The hosts creating the collision retransmit the last 16 frames.
The hosts extend their delay period to allow for rapid transmission.

6 What are three functions of the upper data link sublayer in the OSI model? (Choose three.)

recognizes streams of bits
* identifies the network layer protocol
* makes the connection with the upper layers identifies the source and destination applications
* insulates network layer protocols from changes in physical equipment
determines the source of a transmission when multiple devices are transmitting

7 What does the IEEE 802.2 standard represent in Ethernet technologies?

MAC sublayer
Physical layer
* Logical Link
Control sublayer
Network layer

8 Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?

A random delay is used to ensure a collision-free link.
A random delay value for each device is assigned by the manufacturer.
A standard delay value could not be agreed upon among networking device vendors.
* A random delay helps prevent the stations from experiencing another collision during the transmission.

9 Refer to the exhibit. Which option correctly matches the frame field type with the contents that frame field includes?

* header field - preamble and stop frame
data field - network layer packet
data field - physical addressing
trailer field - FCS and SoF

10 Host A has an IP address of 172.16.225.93 and a mask of 255.255.248.0. Host A needs to communicate with a new host whose IP is 172.16.231.78. Host A performs the ANDing operation on the destination address. What two things will occur? (Choose two.)

Host A will change the destination IP to the IP of the nearest router and forward the packet.
Host A will broadcast an ARP request for the MAC of its default gateway.
A result of 172.16.225.0 will be obtained.
* Host A will broadcast an ARP request for the MAC of the destination host.
A result of 172.16.224.0 will be obtained.
* A result of 172.16.225.255 will be obtained.

11 Which of the following is a drawback of the CSMA/CD access method?
* Collisions can decrease network performance.
It is more complex than non-deterministic protocols.
Deterministic media access protocols slow network performance.
CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.

12 Ethernet operates at which layer of the TCP/IP network model?
application
physical
transport
internet
data link
* network access

13 What is the primary purpose of ARP?
translate URLs to IP addresses
* resolve IPv4 addresses to MAC addresses
provide dynamic IP configuration to network devices
convert internal private addresses to external public addresses

14

Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?

* No collisions will occur on this link.

Only one of the devices can transmit at a time.
The switch will have priority for transmitting data.
The devices will default back to half duplex if excessive collisions occur.

15

Refer to the exhibit. Host_A is attempting to contact Server_B. Which statements correctly describe the addressing Host_A will generate in the process? (Choose two.)

A packet with the destination IP of Router_B.
A frame with the destination MAC address of Switch_A.
A packet with the destination IP of Router_A.
* A frame with the destination MAC address of Router_A.
* A packet with the destination IP of Server_B.
A frame with the destination MAC address of Server_B.

16 Which statements correctly describe MAC addresses? (Choose three.)

dynamically assigned
* copied into RAM during system startup
layer 3 address
* contains a 3 byte OUI
* 6 bytes long
32 bits long

17 Which two features make switches preferable to hubs in Ethernet-based networks? (Choose two.)

reduction in cross-talk
* minimizing of collisions
support for UTP cabling
* division into broadcast domains
increase in the throughput of communications

18 What are the two most commonly used media types in Ethernet networks today? (Choose two.)

* coaxial thicknet
copper UTP
coaxial thinnet
optical fiber
* shielded twisted pair

19 Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.

85
90
* BA
A1
B3
1C

20 After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data?

the device involved in the collision with the lowest MAC address
the device involved in the collision with the lowest IP address
* any device in the collision domain whose backoff timer expires first
those that began transmitting at the same time


21 

Refer to the exhibit. What command was executed on a host computer to produce the results shown?

route PRINT
* arp -a
arp -d
netstat
telnet

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When Login on UBS Sytem appear " File Access Denied"

Description
Message  prompted for difference version  are : n
For version 8.x “ 9.0    show ’  File access  is denied’
For version 9.1 and above   show ’  >ousekeeping in progress, not allow to proceed

Solution
1.    Login screen,
2.    Select User ID,
3.    Key in the  password (UBS),
4.    Right click on “Exit” button,
5.    Type ’A123’,
6.    Click on “Yes“, “Ok“.

7. Good luck for login in UBS System 

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CCNA Exploration 4.0: Network Fundamentals - Chapter 8 Exam Answers

1. Which type of cable run is most often associated with fiber-optic cable?
* backbone cable
horizontal cable
patch cable
work area cable

2. In most business LANs, which connector is used with twisted-pair networking cable?
BNC
RJ-11
* RJ-45
Type F

3. When is a straight-through cable used in a network?
when connecting a router through the console port
when connecting one switch to another switch
* when connecting a host to a switch
when connecting a router to another router

4
With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
* the magnetic field around the adjacent pairs of wire
the use of braided wire to shield the adjacent wire pairs
the reflection of the electrical wave back from the far end of the cable
the collision caused by two nodes trying to use the media simultaneously

5 .Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?
Presentation
Transport
Data Link
* Physical

6 .An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?
light injector
* OTDR
TDR
multimeter

7
XYZ Company is installing new cable runs on their data network. What two types of cable would most commonly be used for new runs? (Choose two.)
* coax
Cat4 UTP
Cat5 UTP
* Cat6 UTP
STP

8 .What is a possible effect of improperly applying a connector to a network cable?
Data will be forwarded to the wrong node.
* Data transmitted through that cable may experience signal loss.
An improper signaling method will be implemented for data transmitted on that cable.
The encoding method for data sent on that cable will change to compensate for the improper connection.

9
What are three measures of data transfer? (Choose three.)
goodput
* frequency
amplitude
* throughput
crosstalk
**bandwidth

10. Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?
coax cable
rollover cable
* crossover cable
straight-through cable

11. In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?
coax
* fiber
Cat5e UTP
Cat6 UTP
STP

12
Which fiber connector supports full duplex Ethernet?

*



13 Which method of signal transmission uses radio waves to carry signals?
electrical
optical
* wireless
acoustic

14 Which characteristics describe fiber optic cable? (Choose two.)
* It is not affected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding and twisting to protect data.
It has a maximum speed of 100 Mbps.
* It is the most expensive type of LAN cabling.

15 Which of the following is a characteristic of single-mode fiber-optic cable?
* generally uses LEDs as the light source
relatively larger core with multiple light paths
less expensive than multimode
generally uses lasers as the light source

16 What is considered a benefit of wireless as a media choice?
* more host mobility
lower security risks
reduced susceptibility to interference
less impact of the surroundings on the effective coverage area

17 What characteristic of UTP cable helps reduce the effects of interference?
the metal braiding in the shielding
the reflective cladding around core
* the twisting of the wires in the cable
the insulating material in the outer jacket

18 What is a primary role of the Physical layer in transmitting data on the network?
* create the signals that represent the bits in each frame on to the media
provide physical addressing to the devices
determine the path packets take through the network
control data access to the media

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5 Cyber Security Trends in 2011

In fact, cyber crime is very attractive to criminals. With the growth of mobile services platform superb, criminals will have more ways to attack.

Then would like apakira about cyber security trends in 2011? Here are 5 predictions according to Symantec:

1. Important Infrasturuktur So Target Attack, Slow Reacting Government

The attackers seemed to have seen the impact of the threats that attack Stuxnet in industrial control systems industry. Symantec estimates that cyber criminals take a lesson from what Stuxnet.

This is the most significant example to date in terms of a computer virus created specially to change the behavior of the system hardware to produce a physical effect in the real world. Although initially slow, it is estimated the frequency of this type of attack will increase.

The findings of the 2010 Critical Information Infrastructure Protection (CIP) Survey Symantec also menggaungkan this trend because 48% of respondents said they expect to get an attack in the next year and 80% believe that the frequency of such attacks will increase.

"Most of the critical infrastructure providers to give support and really hope to be able to cooperate with their governments in planning for CIP. However, we would not expect much movement on the government side related matters referred to in this year," says Symantec.


2. Zero-Day Vulnerability and Target Very Special

In 2010, Hydraq aka Aurora, provide concrete examples of the target class with a very specific threat that is growing. The threat was trying to infiltrate into a particular organization or a particular type of computer systems by exploiting software vulnerabilities that were previously unknown.

Attackers have used this security hole for years, but when the threat to the very specific target gained momentum in 2011. Symantec predicts, users will see zero-day vulnerabilities appear more in the next 12 months than in the previous year.

The main drivers behind this trend is the nature of the low distribution of malware.Threat with specific targets to focus only on a small number of organizations or individuals in order to steal valuable data or infiltration / access the target system.

By exploiting this fact, the attacker intends to increase their madness and attack their targets in a single attack without being noticed.

3. New IT Security Model

The use of smartphones and tablet continues to grow at a pace that is unprecedented. IDC estimates that by the end of the year, shipments of new mobile devices will increase by 55% and Gartner meproyeksikan that in the same time, 1.2 billion people will use mobile phone with a rich web connectivity capabilities.

When the devices become more sophisticated while only a small portion of mobile platforms that dominate the market, it is inevitable that the attacker will enter the mobile devices in 2011 and that mobile devices will become the main source of loss of confidential data.

Therefore, the spread of this gadget is not showing signs of decline in the years to come, companies will be attracted by the new security model to protect data that is stored and can be accessed through the device.

Moreover, when employees become more mobile and work when you travel, the company also had to overcome various challenges associated with adopting new models, such as security in the cloud, for appropriate solutions that will work seamlessly on many platforms and devices .

4. Triggering Encryption Technology

Explosion in the use of mobile devices in the corporate environment does not only mean that the company will face new challenges in keeping the device and critical data in it easily accessible and safe. But they also must comply with various industry data protection regulations of data protection and privacy.

Despite these regulations, many companies / organizations do not disclose when the device moves that contains important data is lost, as they did with the laptop.

"In fact, employees do not always report the loss of these devices into their company. This year, we predict that regulators will begin to take action against this problem and this will encourage companies / organizations to further enhance the use of encryption technology, especially for mobile devices," Symantec said.

The company is also believed to be a more proactive approach to data protection by adopting encryption technology to meet the standards of compliance with regulations and avoid heavy fines and damage to their brand which is caused by a data breach.

5. Attacks Triggered Political Interests

In the study CIP Symantec, more than half of all companies said they suspect or reasonably believe that they have launched an attack with a specific political purpose.

Previously, these attacks particularly in the area of cyber espionage or attack type of denial-of-service to the Web service. However, with the opening of Pandora's box because Stuxnet, it seems we will see these threats move more than just a game of espionage and interference, because the malware is armed to cause damage in the real world.

Symantec assumes that Stuxnet probably only the first tangible indication of death from the efforts that some people call it a 'cyber war' that has been occurring for some time now.

"In 2011, indications that more clear about the efforts to control the digital arms race which is currently ongoing will come to the surface," Symantec added.

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Netbenas Platform 6.9 DG

Create professional desktop rich-client Swing applications using the world's only modular Swing application framework 

Create large, scalable, modular Swing applications from scratch 
Master a broad range of topics essential to have in your desktop application development toolkit, right from conceptualization to distribution 
Pursue an easy-to-follow sequential and tutorial approach that builds to a complete Swing application 
English translation by leaders of the NetBeans community of a Germany Developer's Notebook on the NetBeans platform 
In Detail 

The NetBeans Platform has many features provided out of the box for Swing desktop application developers. It can take you hours just to create menu bars, toolbars, a window system, and other typical desktop application infrastructural needs rather than you focusing on your domain knowledge. Imagine how much time you could save with a hands-on guide for using the NetBeans Platform, which relieves you from creating desktop functions for each of your applications. 

This book guides you through the development of a complete Swing application built on the NetBeans Platform. Each chapter introduces a number of new concepts relating to a theme, such as the window system, and then shows you how to implement the concepts in the application you are creating. At the end of the book you have a task manager, which you can adapt to your own purposes. Or you can, of course, create your own applications, now that you have built up a solid basis of NetBeans Platform knowledge. 

The NetBeans Platform is a framework for developing large distributed desktop applications. It aims to drastically simplify desktop application development by providing a number of techniques, patterns, and full-blown Swing components out of the box. Most desktop applications have very similar technical requirements, such as: a consistent user interface, extensibility, data display, configuration settings, a help system, distribution mechanisms, on-line update possibilities, and the ability to be deployed to multiple operating systems. 

Fulfilling these technical requirements over and over again for each new application is expensive, superfluous, and boring. The NetBeans Platform gives developers a transparent, open source, extensible, and free framework that address all of these technical requirements. This book will guide you through all these topics and show you how you can apply the lessons learned in the context of a real application. 

The central driver of the book is the creation of a complete sample application, chapter by chapter, throughout the length of this book. You will learn how to apply the key concepts in your own work environment, so that you will be able to build flexible, reliable, robust and scalable Swing applications yourself. At the end of the book, you will be comfortable creating similar applications yourself and you will know what to do when you get stuck. 

This book helps you to create robust Swing applications by providing an in-depth coverage of all the features of the powerful NetBeans Platform 6.8 

What you will learn from this book 

Reuse the NetBeans window system for your Swing applications, rather than creating your own 
Explore the NetBeans module system and utilize it effectively in large applications 
Use the standard parts of the NetBeans Platform rather than creating your own menu bars, toolbars, and other typical features 
Handle the display of large sets of data via the NetBeans Nodes API, together with the NetBeans Platform's advanced Swing components 
Get to know all of the main NetBeans APIs and utilize them for developing applications that suit your needs 
Visualize your data quickly and powerfully via the NetBeans Visual Library API 
Prototype your application and get very complex data structures displayed in interesting ways in no time 
Create applications that can be easily deployed to Windows, Linux, and Mac 
Build your understanding of the nuances of the NetBeans Platform as you create an application from scratch 
Approach 

This is a step-by-step example-driven tutorial designed to be worked through chapter-wise. You'll be learning with the help of example code and screenshots that will ensure easier understanding. At the end, you will have developed a complete application on top of the NetBeans Platform. 

Who this book is written for 

This book is written for developers who are comfortable with Java and Swing and who would like to use a framework as the basis of their Swing application. Zero knowledge of the NetBeans Platform is assumed. The reader is typically a developer (or a group of developers) wanting to create large, distributed, flexible Swing applications. The development team is typically large and distributed and members need to work independently on distinct parts of the application. The end user of the application typically needs to have the ability to install additional features at runtime, after the application has already been installed, without reinstalling the application. 

http://www.amazon.com/NetBeans-Platform-6-9-Developers-Guide/dp/1849511764/

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CodeIgniter 1.7 Professional Development 2010

Become a CodeIgniter expert with professional tools, techniques and extended libraries

Learn expert CodeIgniter techniques and move beyond the realms of the User Guide
Create mini-applications that teach you a technique and allow you to easily build extras on top of them
Create CodeIgniter Libraries to minimize code bloat and allow for easy transitions across multiple projects
Utilize third-party APIs (Twitter oAuth and Facebook Connect) and make use of some less-known helper functions - CodeIgniter's hidden gems
A step-by-step, practical guide with examples and screenshots

In Detail

CodeIgniter is an open source PHP framework with a small footprint and exceptional performance. It gives you a rich set of libraries for common tasks, with a simple interface to access them. There are several unexplored aspects of CodeIgniter that can help developers build applications more easily and quickly. In this book, you will learn the intricacies of the framework and explore some of its hidden gems.

If you want to get the most out of CodeIgniter, this book is for you. It teaches you what you need to know to use CodeIgniter on a daily basis. You will create mini-applications that teach a specific technique and let you build on top of the base.

This book will take you through developing applications with CodeIgniter. You will learn how to make your CodeIgniter application more secure than a default installation, how to build large-scale applications and web services, how to release code to the community, and much more. You will be able to authenticate users, validate forms, and also build libraries to complete different tasks and functions.

The book starts off introducing the framework and how to install it on your web server or a local machine. You are introduced to the Model-View-Controller design pattern and how it will affect your development. Some important parts of the CodeIgniter Style Guide are included to keep CodeIgniter development as standardized as possible; this helps greatly when working as part of a team or taking on an old CodeIgniter project. You will quickly move on to how CodeIgniter URLs work and learn about CodeIgniter-specific files such as helpers and plugins. By the time you finish this book, you will be able to create a CodeIgniter application of any size with confidence, ease, and speed.

This guide will enable you to become well-versed with CodeIgniter through practical applications using the tools and techniques used by many seasoned CodeIgniter developers.

What you will learn from this book

Learn the Model-View-Controller design pattern to structure your code
Create more readable and maintainable queries using the Active Record implementation
Create and maintain database tables using the Database Forge class
Authenticate users using Twitter oAuth and Facebook Connect
Create your own Authentication Library for more control over your user accounts
Secure your application using CodeIgniter's built-in functionality and some quick tips to help further
Build a RESTful Web Service, opening up your application to third-party developers
Create extended Controllers, grouping functionality into multiple Controllers helping to keep repeated code to a minimum
Learn techniques used by professionals to scale CodeIgniter over multiple servers
Learn top tips for releasing code to the community and giving support to the developers using your code
Approach

This book is a practical guide that takes you through a number of techniques. Each chapter builds upon knowledge from the previous chapter. Step-by-step instructions with examples and illustrative screenshots ensure that you gain a firm grasp of the topic being explained.

Who this book is written for

This book is written for advanced PHP developers with a good working knowledge of Object Oriented Programming techniques who are comfortable with developing applications and wish to use CodeIgniter to make their development easier, quicker, and more fun. Basic knowledge of CodeIgniter will be helpful. This book will suit developers who fall into three categories:

Professional Developers - employees of a software house or organization with in-house software development
Freelance Developers - solo developers working in the industry on their own
Just-for-fun Developers - people working with PHP building web applications is their spare time for fun 

http://www.amazon.com/CodeIgniter-professional-development-Adam-Griffith/dp/1849510903

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10 Tips Security Wifi

We often use wireless for internet connection, whether at home or in public places which provide hotspots. For those who have their own wireless devices at home, may need to consider a few things for the security of wireless devices, or for the convenience of the Internet through wireless devices whether it is "Access Point" or "Router". Some things that are:

1. Change Default Administrator Username and Password
Most of us sometimes like to forget or even assume that the administrator username and password do not need to be replaced, citing fears Ntar a moment forget the password, or assume that no one can connect to these wireless devices other than us or that we give access orang2. Yet in today's era there is a term I often hear "that does not exist maybe" it should be changed with the comfort and security.

2. Enable Wireless Security (WPA / WEP)
All wireless devices are equipped with these features, then better enable these features so as not just anyone can access our wireless.

3. Change the SSID defaul
The default SSID of a wireless device is usually the same, it is useful to change and usually can change through setiing wireless menu.

4. Enable MAC Address Filtering
The wireless router provides MAC Address Filtering feature, it can be used to limit the devices that can connect to the wireless by giving access only to certain devices by registering macaddress of these devices.

5. Non Enable SSID Broadcast
By choosing to disable SSID Broadcast, wireless SSID we will not be visible when the scan. And we could add the SSID manually.

6. Disable Auto-Connect from Wireless devices
Most people ngeset wireless with the status of auto-connect to other wireless devices, this should be avoided so as not to cause problems.

7. Set IP in Wireless Device with Static Mode
By ngeset to static mode, when the wireless we can impenetrable by man, it can not be directly conn because they have to find the IP. And yes sebaikn IP also does not use a common IP / common.

8. Enable Firewall
Obviously, by adding or activate the firewall then we increase the security level of our wireless devices.

9. Place the Wireless Router or Access Point in a safe place.
Wireless devices usually have a certain range, then put him in strategic places so that only reach the area we want.

10. Turn off when not in use Wireless Devices
When the wireless device does not use, we'd better turn off the device.

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wifi access point Security

Until now there are two safety standards in the Wi-Fi network already offered. The first standard adalam WEP (Wired Equivalent Protocol), followed by standard WPA (Wi-Fi Protected Access). WEP secures traffic information on the Wi-Fi using a system of "safety lock" called "WEP key". With the WEP key is all traffic data is encoded first or encrypted before it is transmitted into the air so as to prevent access to unauthorized parties.Change the default administrator password (username)Who played on the Wi-Fi is the access point or router. To set up from this point access equipment, the vendor of the access point device will provide a web-based interface, where to enter into this interface then you need to fill in your username and password. Meanwhile, in some cases, equipment access point is set by the vendor with a specific username and password that is predictable by the user. For that you must change the default password of your access point. Even if you need to also change an existing username.

Enable encryptionAll Wi-Fi equipment must support some form of data security. The point encryption scrambles data sent on the wireless network so it is not easily readable by others.Wi-Fi equipment are now providing security technology options that you can use as needed. Make sure all the equipment in your wireless network using the security settings used on the access point.

Change the default SSIDAccess point or router using a network name called the SSID. Vendors usually give them the product name access point with a default SSID. For example, the SSID which was released by Linksys usually is "linksys". The reality is if someone knows an SSID is not necessarily so he could break into your network, but at least this is a beginning for him. In the eyes of a hacker, when seeing an SSID that is still the default, then it is an indication that the access points are not configured properly and there is likely to be cracked. Change your default SSID immediately after setting up your access point.

Enable MAC Address filteringEach Wi-Fi devices already have a unique identification called the "physical address" or MAC address. Access point or router will record every MAC address of the devices that connect to it. You can set that only devices with certain MAC addresses are allowed access into your wireless network. For example, your PDA has a particular MAC address, then you enter the MAC address of your PDA into a MAC address filter on your access point. So who can connect to the network while this is just from your PDA. But you also remain cautious, because the hacker could have made the MAC address filtering tricks to outsmart this.

Turn off the SSID broadcastIn Wi-Fi network, the access point or router typically will membroadcast SSID on a regular basis. This feature was deliberately designed for hotspot areas where Wi-Fi clients in the area and can just come and go quickly. Under conditions in your home or office where he would have the SSID you know yourself, then this feature should not be activated because it can invite the neighbor next door to you or also know the SSID to prevent other people ride your internet network for free. You can disable SSID broadcast facility is for the safety of your network.

Give a static IP address to Wi-Fi devicesToday people tend to use DHCP to assign IP addresses automatically to clients who want to connect to a wireless network. It's quick and easy way for your network, but remember that this is also an easy way for hackers to obtain a valid IP address on your wireless network. You can turn off the DHCP feature on the access point and set a range of IP addresses that have been fixed and also set your Wi-Fi devices that want to connect to the access point with a range of IP addresses that fix earlier.A safe place for the access point or routerWi-Fi signals normally reach up out of the house or office. Signal leaking out of the house or office until very high risk for the emergence of exploitation of your wireless network. You should put your access point equipment in the area around the living room of your home. Never put the access point or router near the window, because it will further increase the reach of Wi-Fi signal outside your home.Just turn off the wireless network when not in useThe most powerful security policy is to turn off the network or access point equipment when not in use. For example, do not ever leave the house with Wi-Fi is on, even if it is for downloading data. Access points are lit with no one to monitor very high risk of exploitation.
Wireless Lan or Wifi, networks that use radio waves, which are very inexpensive and easy to use, when compared with that using a Cable Network. However, wireless networks use radio waves ang Invisible fact, if we do not secure will enable hacked or the possibility of attack from outside.There are some important things that should be done for safety or security of your wireless network, at least reduce the level of hacking activity or attaking:

1. Change Password Default Access Point.
2. If possible, change the default IP. (Several brands of Access Points usually are accompanied by this facility.)
3. Turn on encryption methods, use WPA encryption with Pre Shared Key (WPA-PSK), and provide a secure password. Can also take advantage of WPA encryption with Temporal Key Integrity Protocol).
4. Turn off SSID Broadcast function, so you do not terdeksi SSID on the War Driving.
5. Lindunngi SSID, by: changing the default SSID name with the name of the SSID that is not easily guessed.
6. Use MAC address filtering to reduce the infiltration activity
7. Non Enable DHCP, use static IP with a rare value diguakan.
8. Use additional security such as: CaptivePortal or other applications that inject the firmware on the Access Point.
9. Monitoring via Client Access Point, this is a new way of controlling terhadapa uuntuk Access Point do you have through the client. Process 'Block IP', 'Client Resctriction' and on other security. One application that can be used are: Mc Affe Wireless Home Security.

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