you should add net.inet.tcp.drop_synfin=1 to /etc/sysctl.conf so it gets piped into sysctl on boot or just run sysctl net.inet.tcp.drop_synfin=1 as root -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mark Picone Sent: Wednesday, 7 April 2004 10:57 am To: [email protected] Subject: RE: SYN attacks You could try adding this to /etc/sysctl.conf sysctl net.inet.tcp.drop_synfin=1 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Spades Sent: Wednesday, 7 April 2004 3:02 am To: [email protected] Cc: [email protected] Subject: SYN attacks Heya, FREEBSD 4.9-STABLE Is there anyway to block SYN attacks and prevent it from bring down my server? Its been attacking for sometime. _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "[email protected]" _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "[email protected]" _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "[email protected]"