6 lines
186 B
Groff
6 lines
186 B
Groff
|
#
|
||
|
# 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
|