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.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 FORWARD_TSN
chunk type available flags
.br
DATA I U B E i 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
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