IIRC, you can also (at least in Debian) add the line 'syncookies=yes' to /etc/network/options.
after making this change, what service must I restart to make the change take effect?
thanks jmb -- To UNSUBSCRIBE, email to debian-security-request@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org