Hi everyone.<BR><BR>Recently, my firewall was caught with a bug that cause it to blacklist itself: when it encountered a packet with the "No not fragment" flag set too big to fit on the next hop, it ...

You've just installed a new firewall. Congratulations on taking a big step in protecting your organization. Now you're ready for the next step: configuring the ...

I think we have our main firewall, a PIX 515e pretty well configured.<BR><BR>The access-list only allows certain ports for certain IPs, etc. So far so good.<BR><BR>Blocking icmp in was quite necessary ...

Some, including Symantec's VelociRaptor firewall, come with their ports closed by default - this is called automatic port blocking. If your firewall comes with all the ports and services open, the ...