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I am Linux user with no knowledge on security , up to now i dont know that is my system was in attack or not . I havent felt anything wrong with my system . but every Computer user must have some knowledge on basic system security . so what are the basic things/methods i need to follow the check the security of system and to protect it .

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That is far, far too broad for us to answer here. For something that vague, I suggest looking at past questions about good books on the site and then asking us specific questions as you go through the material and need more understanding than the book you've chosen is providing. –  Jeff Ferland May 25 '12 at 18:50
    
what precautions have to take by a basic user ?? –  raaz May 26 '12 at 6:09
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closed as not a real question by Jeff Ferland, Iszi, Rory Alsop May 26 '12 at 7:53

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

2 Answers

up vote 3 down vote accepted

You may be interested in a Linux hardening guide. There are copious amounts of articles online which cover how to secure your operating system. Here are a few:

http://www.gotroot.com/Linux+Hardening+Guide http://www.puschitz.com/SecuringLinux.shtml http://www.cyberciti.biz/tips/linux-security.html

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Thanks for the links i will have a look at them , :) –  raaz May 26 '12 at 6:08
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I agree with Jeff, your post is much to vague to receive any kind of constructive information. Are you a system administrator or are you trying to secure a personal Linux machine? Is this a server or a workstation?

I suggest doing a little google'ing and seeing what comes up. I suggest checking out these sites for starters:
http://library.linode.com/security/basics
http://tldp.org/HOWTO/Security-HOWTO/

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Hi I am just a Linux user but with no knowledge on security and not a system admin . thank for the links . –  raaz May 26 '12 at 6:09
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