libipt_icmp.man revision 4008138e2b5248940265b160fae001d8954fae21 
1This extension is loaded if `--protocol icmp' is specified.  It
2provides the following option:
3.TP
4.BR "--icmp-type " "[!] \fItypename\fP"
5This allows specification of the ICMP type, which can be a numeric
6ICMP type, or one of the ICMP type names shown by the command
7.nf
8 iptables -p icmp -h
9.fi
10