| .TP |
| [\fB!\fP] \fB\-\-source\-port\fP,\fB\-\-sport\fP \fIport\fP[\fB:\fP\fIport\fP] |
| .TP |
| [\fB!\fP] \fB\-\-destination\-port\fP,\fB\-\-dport\fP \fIport\fP[\fB:\fP\fIport\fP] |
| .TP |
| [\fB!\fP] \fB\-\-chunk\-types\fP {\fBall\fP|\fBany\fP|\fBonly\fP} \fIchunktype\fP[\fB:\fP\fIflags\fP] [...] |
| The flag letter in upper case indicates that the flag is to match if set, |
| in the lower case indicates to match if unset. |
| |
| Chunk types: DATA INIT INIT_ACK SACK HEARTBEAT HEARTBEAT_ACK ABORT SHUTDOWN SHUTDOWN_ACK ERROR COOKIE_ECHO COOKIE_ACK ECN_ECNE ECN_CWR SHUTDOWN_COMPLETE ASCONF ASCONF_ACK |
| |
| chunk type available flags |
| .br |
| DATA U B E u b e |
| .br |
| ABORT T t |
| .br |
| SHUTDOWN_COMPLETE T t |
| |
| (lowercase means flag should be "off", uppercase means "on") |
| .P |
| Examples: |
| |
| iptables \-A INPUT \-p sctp \-\-dport 80 \-j DROP |
| |
| iptables \-A INPUT \-p sctp \-\-chunk\-types any DATA,INIT \-j DROP |
| |
| iptables \-A INPUT \-p sctp \-\-chunk\-types any DATA:Be \-j ACCEPT |
