--- Frank Wiles wrote:
On Sun, 1 May 2005 20:27:02 -0700 (PDT) Jack [email protected] wrote:
I have about half of the addresses blocked, but
what
is the impact of adding 150 ip addresses to iptables
with
potentially hundreds more over time? At what point will iptables eat up all my bandwidth in blocking addresses?
Just to add to what Dave said...
I have a production server that is fairly low end hardware that currently has 2952 iptables rules that block individual IPs, several /24 networks, and a handful of /16s. There is no noticeble impact on the box.
Wow! That's great news! Ok, so the plan looks rto be to add the ipaddresses to iptables and change the port for sshd. Other ports are being probed and attacked, but not as frequently and not nearly as aggressively. I'll modify my blacklist gathering script to automatically add the new addresses to iptables and send me an email listing the new addresses.
Thanks everyone!
Brian
__________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com