miércoles, 18 de agosto de 2010

Virus and Spywares



Virus
A computer virus is a computer program that can copy itself and infect a computer. You should take care of your computer learning about how to protect your pc from virusers.

How to combat virus
-The basic one is to install a good antivirus program in your pc.

The best way to protect your network from virus infection is to use an antivirus program.


A antivirus program can detect and remove


This sofware help you keep your computer clean an free o virus.

-Just enter to the web page you trust
-Dont open weird email


Spywares
Spyware is a type of malware that is installed on computers and collects little bits of information at a time about users without their knowledge.

Remedies and prevention
As the spyware threat has worsened, a number of techniques have emerged to counteract it. These include programs designed to remove or to block spyware, as well as various user practices which reduce the chance of getting spyware on a system.
Anti-spyware programs can combat spyware in two ways:

They can provide real time protection against the installation of spyware software on your computer.
Anti-spyware software programs can be used solely for detection and removal of spyware software that has already been installed onto your computer.

miércoles, 23 de junio de 2010

Computer Security


Computer security is the process of preventing and detecting unauthorized use of your computer. Prevention measures help you to stop unauthorized users from accessing any part of your computer system. Detection helps you to determine whether or not someone attempted to break into your system, if they were successful, and what they may have done.

some tips for your security

1. Make sure you have a security policy in place. this can help you keep the rule in your organisation should define the level of security and the roles and responsibilities of users, administrators and managers.

2. Keep your systems patched will close vulnerabilities that can be exploited by hackers.

3. Have a network device inventory this help you keep control of the item you have in your network.

4. Scan TCP/UDP services -— Turn off or remove unnecessary services.

5. Set a strong password.

6. Don't trust code from non-trusted sources.

7. You should block the web page you don't trust.

8. Don't provide more rights to system resources than necessary.

9. Have a good firewall in your pc.

10. Clean your computer every month at least

lunes, 5 de abril de 2010

how to create a twisted cable



Things You'll Need:
Twisted network cable spool (no RJ45 ends)
RJ45 Modular Jacks
RJ45 Crimping Tool
Scissors



Step 1
Using the crimping tool, insert ¾ inch of the twisted network cable end and remove the cable's coating. You can also use a pocket knife or scissors to strip the wire. Be sure not to cut the wires.
Step 2
Untwist the wires so you have eight individual wires. Sort them in the following order from left to right: Orange White, Orange, Green White, Blue, Blue White, Green, Brown White, Brown.
Step 3
Use the scissors to trim the edges of the wires so all wires are the same length.
Step 4
Insert the wires into a modular jack. Insert with the hook side facing down or away from you. Be sure the wires are inserted completely to the top of the modular jack. Part of the coating should be inserted into the jack as well. If not, remove the wires and trim the wires slightly until part of the coating inserts into the modular jack.
Step 5
Insert the modular jack into the RJ45 slot in the crimping tool. Press the tool together firmly until you hear a small snap. Pull out the modular jack and tug on the cable to be sure the wires are held firmly in place.
Step 6
Measure out the length of cable you need and use scissors to cut the twisted network cable. Repeat the above process on the second end of the cable