1 This extension can be used if `\-\-protocol icmp' is specified. It 2 provides the following option: 3 .TP 4 [\fB!\fP] \fB\-\-icmp\-type\fP {\fItype\fP[\fB/\fP\fIcode\fP]|\fItypename\fP} 5 This allows specification of the ICMP type, which can be a numeric 6 ICMP type, type/code pair, or one of the ICMP type names shown by the command 7 .nf 8 iptables \-p icmp \-h 9 .fi 10
