Apparently this command fixes the problem: echo 'net.ipv4.tcp_challenge_ack_limit = 999999999' >>/etc/sysctl.conf;sysctl -p I got this from http://www.isssour

Apparently this command fixes the problem: echo 'net.ipv4.tcp_challenge_ack_limit = 999999999' >>/etc/sysctl.conf;sysctl -p I got this from http://www.isssource.com/fixing-an-internet-security-threat/ http://www.isssource.com/fixing-an-internet-security-threat/ but they had a typo