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VIRUS and ANTI VIRUS:

Q1. What is the difference between a worm and a virus?

Q2. I am using Norton 2004 and today I had received a virus w 32 blaster which is somewhere in my windows- systems files. Although Norton detected it but did not repair it, now what should I do?

Q3. What is quarantine?

Q4. I have 3 options in Norton when virus is found, which should I check:

a: try to automatically repair the infected file
b: try to repair then quarantine if not successful
c: deny access to the infected file.

Q5. Should I enable the option for firewall in the dial up connection?

Q6. Is Windows XP more prone to virus threats?

Q7. Which connection is safer to have Dial up or cable connection for browsing the internet?

Q8. Is full system scan recommended and after how many days and approx how many hrs it takes?

Q9. Apart from virus definitions, should I also update other components from Norton as there are also n number of things to be updated in the Norton?

Q10. What is a stinger and how do you use it?

Q11. what are those ports which are left open by default when a Microsoft product is installed, and how to close them,?

Q12. Is it possible to disable Norton anti- virus for sometime? If yes, then how?

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Q1. What is the difference between a worm and a virus?

Worms are programs that replicate without infecting other programs. Some worms spread by copying themselves from disk to disk. They search for specific types of files and try to damage or destroy those files. Worms replicate only in memory, creating myriad copies of themselves, all running simultaneously, which slows down the computer. Other worms spread through your email address list and can email themselves without you knowing. Like Trojan horses, worms are not viruses and therefore cannot be repaired. They must be deleted from your computer.

A software virus is a parasitic program written intentionally to alter the way your computer operates without your permission or knowledge. A virus attaches copies of itself to other files and, when activated, may damage files, cause erratic system behavior, or display messages. Computer viruses infect system files and documents created by programs with macro capabilities. Some system viruses are programmed specifically to corrupt programs, delete files, or erase your disk.

Virus comes to life only when they are executed, i.e. somebody has to click an attachment to get the virus going.

A worm may or may not need user intervention to get them going. Worms also carry other payloads like a Trojan horse--the ones, which open a back door to the computer it is resident on. This enables anybody who controls that worm, to gain access to your comp and launch attacks on other comps and the like. Worms are more difficult to clean.

But viruses like "mydoom" or "doomjuice" are examples that blur the boundary.

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Q2. I am using Norton 2004 and today I had received a virus w 32 blaster which is somewhere in my windows- systems files. Although Norton detected it but did not repair it, now what should I do?

Download the W32.blaster worm removal tool from  www.symantec.com  to remove the blaster worm.

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Q3. What is quarantine?

Quarantine is a place on your hard drive where files which cannot be cleaned are kept so that the virus does not spread to other files.

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Q4. I have 3 options in Norton when virus is found, which should I check:

a: try to automatically repair the infected file
b: try to repair then quarantine if not successful
c: deny access to the infected file.

You can select 'a'.

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Q5. Should I enable the option for firewall in the dial up connection?

You can enable it. There is no harm.

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Q6. Is Windows XP more prone to virus threats?

Windows XP if not properly patched is prone to virus threats. You should update your antivirus definitions as well as download the critical patches from the windows update sites.

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Q7. Which connection is safer to have Dial up or cable connection for browsing the internet?

In some cases, it may be safer to have a cable connection. With dial-up connection, you will always have public IP address. That is you are directly on the internet. Most of the cable internet connections do not assign public IP addresses. Instead they use private IP addresses with a firewall / router between your computer and the internet. So, you have a less chance of being attacked by blaster worm.

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Q8. Is full system scan recommended and after how many days and approx how many hrs it takes?

Norton takes a long time to do a full system scan. You should at least do full system scan once every month.

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Q9. Apart from virus definitions, should I also update other components from Norton as there are also n number of things to be updated in the Norton?

You should also update other components apart from virus definitions. Although it takes a bit of time, I suggest you do it.

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Q10. What is a stinger and how do you use it?

Stinger is an antivirus programme.

http://vil.nai.com/,,vil/stinger/

Try to visit this link and then download Stinger.exe. After the download is completed try to open this file from your hard drive. Now when you hit enter try using your jaws cursor and go to Browse button and hit the left click, it will show all the drives in a tree view. Now use your PC cursor to move around your drives and select till the last drive. If your last drive is D:\ then select it and hit enter. Now go back to your jaws cursor and go top of the file by using arrow keys and then look for scan button and when you hit left click on it stinger.exe will start the scanning.

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Q11. what are those ports which are left open by default when a Microsoft product is installed, and how to close them?

Visit:
www.grc.com OR http://www.grc.com/freepopular.htm

This site has an online security test that will check whether any unwanted ports are open or not. Solutions are also provided. There are also a list of ports and their importance.

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12.Is it possible to disable Norton anti- virus for sometime? If yes, then how?

Press Insert+F11 for the list of system tray icons. Arrow down to Norton antivirus and hit enter. A menu will popup in which you will find "disable Norton antivirus".

OR

1. press window key m to minimize and focus on desktop.
2. press jawskey F11 for jaws or insert S for window eyes to go to system tray.
3. press arrow keys until you reach on Norton antivirus autoprotected enabled.
4. hit enter on it.
5. press letter d to disable it or use arrow keys to find disable and hit enter on it.

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