Copy head to stable/9 as part of 9.0-RELEASE release cycle.

[FreeBSD/stable/9.git] / contrib / ipfilter / rules / example.6

#
# block all TCP packets with only the SYN flag set (this is the first
# packet sent to establish a connection) out of the SYN-ACK pair.
#
block in proto tcp from any to any flags S/SA