Spam: How safe is a hardware firewall?

[robin.kipp at gmx.de (Robin Kipp)]

Hi guys,
I hope this topic isn't to much off-topic since it isn't Metasploit
related... I just put a FortiGate hardware firewall between my server
and the internet. I left all the important ports (HTTP, SMTP, POP3 etc)
open, but the traffic is always being checked by the firewall. The
firewall has thousands of attack definitions, virus signatures etc... Do
you think I can say that my server is safe behind the firewall or are
there always ways to hack the firewall and bypass it?
Robin
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