diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2010-05-10 01:10:09 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2010-05-10 01:10:09 +0200 |
| commit | 7a12625004d261bcd292a75b036522f12840c027 (patch) | |
| tree | 2a7b084887ef9ba9f0a65beeb453a00371b0f731 /doc | |
| parent | 58b363d32bf9b8b504c5664ae4d8b3bb1fab6ddb (diff) | |
| download | conntrack-tools-7a12625004d261bcd292a75b036522f12840c027.tar.gz conntrack-tools-7a12625004d261bcd292a75b036522f12840c027.zip | |
doc: description on how to block traffic with conntrack was incomplete
This patch completes the documentation with the following discussion
that took place in the mailing list.
http://marc.info/?l=netfilter&m=127335152521674&w=2
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/manual/conntrack-tools.tmpl | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/doc/manual/conntrack-tools.tmpl b/doc/manual/conntrack-tools.tmpl index b897318..c3e8682 100644 --- a/doc/manual/conntrack-tools.tmpl +++ b/doc/manual/conntrack-tools.tmpl @@ -19,7 +19,7 @@ </authorgroup> <copyright> - <year>2008</year> + <year>2008-2010</year> <holder>Pablo Neira Ayuso</holder> </copyright> @@ -198,7 +198,12 @@ conntrack v0.9.7 (conntrack-tools): 1 flow entries have been shown. conntrack v0.9.7 (conntrack-tools): 1 flow entries has been updated. </programlisting> -<para>Delete one entry, this can be used to block traffic (you have to set <emphasis>/proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_be_liberal</emphasis> to zero).</para> +<para>Delete one entry, this can be used to block traffic if:</para> +<itemizedlist> + <listitem><para>You have a stateful rule-set that blocks traffic in INVALID state.</para></listitem> + <listitem><para>You have set <emphasis>/proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_loose</emphasis> or <emphasis>/proc/sys/net/netfilter/nf_conntrack_tcp_loose</emphasis>, depending on your kernel version, to zero.</para></listitem> +</itemizedlist> + <programlisting> # conntrack -D -p tcp --dport 3486 tcp 6 431982 ESTABLISHED src=192.168.2.100 dst=123.59.27.117 sport=34846 dport=993 packets=169 bytes=14322 src=123.59.27.117 dst=192.168.2.100 sport=993 dport=34846 packets=113 bytes=34787 [ASSURED] mark=1 secmark=0 use=1 |