path: root/extensions/
diff options
authorHenrik Nordstrom <>2004-01-22 15:04:24 +0000
committerHarald Welte <>2004-01-22 15:04:24 +0000
commitc2794131b445ebccba184066af6d3fb2f38d1f38 (patch)
treea24f57a9be5a8364b53dfa102705d270f36b440a /extensions/
parent0113fe75ff05e09e6f3d251534d9ae32e9aa717c (diff)
split manpages into per-extension manpage snippet (Henrik Nordstrom)
add lots of missing manpage snippets (Harald Welte)
Diffstat (limited to 'extensions/')
1 files changed, 34 insertions, 0 deletions
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+This is used to send back an error packet in response to the matched
+packet: otherwise it is equivalent to
+so it is a terminating TARGET, ending rule traversal.
+This target is only valid in the
+chains, and user-defined chains which are only called from those
+chains. The following option controls the nature of the error packet
+.BI "--reject-with " "type"
+The type given can be
+.B " icmp6-no-route"
+.B " no-route"
+.B " icmp6-adm-prohibited"
+.B " adm-prohibited"
+.B " icmp6-addr-unreachable"
+.B " addr-unreach"
+.B " icmp6-port-unreachable"
+.B " port-unreach"
+which return the appropriate IPv6-ICMP error message (\fBport-unreach\fP is
+the default). Finally, the option
+.B tcp-reset
+can be used on rules which only match the TCP protocol: this causes a
+TCP RST packet to be sent back. This is mainly useful for blocking
+.I ident
+(113/tcp) probes which frequently occur when sending mail to broken mail
+hosts (which won't accept your mail otherwise).