[Cialug] TCP: Treason uncloaked

David Champion dchamp1337 at gmail.com
Fri Jan 13 14:01:59 CST 2012


FYI:

I ran across a Linux server getting hit by an apparent DoS attack, which
caused the server to be very slow. Looking at dmesg, there was a lot of
"TCP: Treason uncloaked..." messages.

A yum update got the kernel update on these (CentOS 5.7), which fixed the
problem.

If you do some googleing, you can also find info on blocking this attack
with iptables.

-dc
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://cialug.org/pipermail/cialug/attachments/20120113/99146f66/attachment.html>


More information about the Cialug mailing list