Joao Paulo Pires wrote: > 'Linux may not be as vulnerable as Windows, but if you think Linux > viruses don't exist, you'd better think again. Virus writers have any > number of possibilities' > > I have just read this sentence and I'm concerned because I have only > firewall(from router a from FC4) working on FC4. Could you explain to me > wich actions I should take? You already took a good action, which is to align yourself with the excellent security response behaviour of Redhat. The #1 action to take is to keep bang up to date with updates: # chkconfig yum on # service yum start Make sure you have your local firewall up (system-config-securitylevel) and pierce only the ports that have to be externally accessible. No firewalls will save you if you serve insecure PHP (but selinux might help) or install .tar.gz software from evil or perverted sources (nothing would help). Try to stick to RPMs from repos in yum, then you stand a chance to get security updates. There is no absolute certainty, there have been attempts to poision the kernel and other software sources secretly with backdoors, you cannot prove the negative that there was no successful unknown attack that is present on the FC4 install media. However you are already ten times safer than your neighbour running Windows :-) Attacks tend to concentrate on the easiest targets, and you aren't that simply by running Fedora. -Andy
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