What is the Best Firewall for Servers?
Sushant Bhatia asks: "I maintain a bunch of servers (Win 2003/XP Pro) at our labs in the university. Of late, the number of attacks on the computers has been more noticeable. The university provides firewall software (Kerio) but that doesn't work with Win 2003 (works with XP). And so we keep getting hit by zombie machines taken over in the Education Department or from Liberal Arts :-). So what does the Slashdot crowd use when they need to secure their Linux and Windows servers? Does it cost less than US$100?"
a linux box.
ZERO
That way, platform compatibility is a nonissue.
I use a dedicated PPro box running Coyote Linux myself, but there are far more robust solutions out there...
Mainframe/UNIX Bit Twiddler and long time Windows/Linux Hobbyist.
The Theorem Theorem: If If, Then Then.
Does it cost less than US$100? You can't be serious. Securing your machines is only worth $100? Is that how much it will cost to fix them once they are cracked? Give me a break. If you are serious about security you can invest more than $100.
I hear this argument a lot, and you're right - it would work... but here's the thing - If you put a pentium I computer with a 2 gig hd or something up in front of an entire lab for internet access, I would wonder about the reliability. What I mean is, at work here I was doing something similar - but when the non-rendundant power supply in the 1995 based computer died, my entire part of the office lost net access, which is bad.
There is always something to be said about having a real server act as a firewall. For home use, sure, use an old computer running linux - but for anything that you would like to count on a reliable, get a real piece of hardware to put that linux distro on, and you'll be happier.