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-rw-r--r--extensions/libipt_set.man32
1 files changed, 19 insertions, 13 deletions
diff --git a/extensions/libipt_set.man b/extensions/libipt_set.man
index d280577..aca1bfc 100644
--- a/extensions/libipt_set.man
+++ b/extensions/libipt_set.man
@@ -1,17 +1,23 @@
-This modules macthes IP sets which can be defined by ipset(8).
+This module matches IP sets which can be defined by ipset(8).
.TP
-.BR "--set " "setname flag[,flag...]"
-where flags are
+[\fB!\fP] \fB\-\-match\-set\fP \fIsetname\fP \fIflag\fP[\fB,\fP\fIflag\fP]...
+where flags are the comma separated list of
.BR "src"
and/or
.BR "dst"
-and there can be no more than six of them. Hence the command
-.nf
- iptables -A FORWARD -m set --set test src,dst
-.fi
-will match packets, for which (depending on the type of the set) the source
-address or port number of the packet can be found in the specified set. If
-there is a binding belonging to the mached set element or there is a default
-binding for the given set, then the rule will match the packet only if
-additionally (depending on the type of the set) the destination address or
-port number of the packet can be found in the set according to the binding.
+specifications and there can be no more than six of them. Hence the command
+.IP
+ iptables \-A FORWARD \-m set \-\-match\-set test src,dst
+.IP
+will match packets, for which (if the set type is ipportmap) the source
+address and destination port pair can be found in the specified set. If
+the set type of the specified set is single dimension (for example ipmap),
+then the command will match packets for which the source address can be
+found in the specified set.
+.PP
+The option \fB\-\-match\-set\fR can be replaced by \fB\-\-set\fR if that does
+not clash with an option of other extensions.
+.PP
+Use of -m set requires that ipset kernel support is provided. As standard
+kernels do not ship this currently, the ipset or Xtables-addons package needs
+to be installed.