X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=extensions%2Flibxt_tcp.man;fp=extensions%2Flibxt_tcp.man;h=0000000000000000000000000000000000000000;hb=f81615a1b6e71d36b4f49a38c04805cc52a146c2;hp=b087fc9e9ab9e99b7d65955b7c22ba3bb1494e7a;hpb=38258638166a4aee377b55922610aa57c410e6f9;p=iptables.git

diff --git a/extensions/libxt_tcp.man b/extensions/libxt_tcp.man
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-These extensions can be used if `--protocol tcp' is specified. It
-provides the following options:
-.TP
-[\fB!\fP] \fB--source-port\fP,\fB--sport\fP \fIport\fP[\fB:\fP\fIport\fP]
-Source port or port range specification. This can either be a service
-name or a port number. An inclusive range can also be specified,
-using the format \fIport\fP\fB:\fP\fIport\fP.
-If the first port is omitted, "0" is assumed; if the last is omitted,
-"65535" is assumed.
-If the second port greater then the first they will be swapped.
-The flag
-.B --sport
-is a convenient alias for this option.
-.TP
-[\fB!\fP] \fB--destination-port\fP,\fB--dport\fP \fIport\fP[\fB,\fP\fIport\fP]
-Destination port or port range specification.  The flag
-.B --dport
-is a convenient alias for this option.
-.TP
-[\fB!\fP] \fB--tcp-flags\fP \fImask\fP \fIcomp\fP
-Match when the TCP flags are as specified.  The first argument \fImask\fP is the
-flags which we should examine, written as a comma-separated list, and
-the second argument \fIcomp\fP is a comma-separated list of flags which must be
-set.  Flags are:
-.BR "SYN ACK FIN RST URG PSH ALL NONE" .
-Hence the command
-.nf
- iptables -A FORWARD -p tcp --tcp-flags SYN,ACK,FIN,RST SYN
-.fi
-will only match packets with the SYN flag set, and the ACK, FIN and
-RST flags unset.
-.TP
-[\fB!\fP] \fB--syn\fP
-Only match TCP packets with the SYN bit set and the ACK,RST and FIN bits
-cleared.  Such packets are used to request TCP connection initiation;
-for example, blocking such packets coming in an interface will prevent
-incoming TCP connections, but outgoing TCP connections will be
-unaffected.
-It is equivalent to \fB--tcp-flags SYN,RST,ACK,FIN SYN\fP.
-If the "!" flag precedes the "--syn", the sense of the
-option is inverted.
-.TP
-[\fB!\fP] \fB--tcp-option\fP \fInumber\fP
-Match if TCP option set.