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Update the helpers article to mention how to avoid loading a helper.

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep 2015-04-17 15:22:38 -07:00
parent 6cb3004a39
commit ccccd847c8
1 changed files with 30 additions and 7 deletions
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37
docs/Helpers.xml
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@ -114,9 +114,11 @@
nf_nat_<replaceable>application</replaceable>; more about that
below.</para>
<para>The modules are not auto-loaded and must be loaded explicitly
using the <command>modprob</command> or <command>insmod</command>
utilities.</para>
<para>Prior to Shorewall 4.5.7, helper modules were not auto-loaded and
must be loaded explicitly using the <command>modprob</command> or
<command>insmod</command> utilities. Beginning with Shorewall 4.5.7,
these modules are loaded when Shorewall is determining the capabilities
of your system.</para>
<para>Many of the modules allow parameters to be specified when the
module is loaded. Among the common parameters is the ports parameter
@ -280,14 +282,23 @@
</listitem>
</varlistentry>
<varlistentry>
<term>DONT_LOAD</term>
<listitem>
<para>This is a comma-separated list of modules that you
specifically don't want Shorewall to load.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>HELPERS</term>
<listitem>
<para>This option was added in Shorewall 4.5.7 and lists the
modules to be enabled for association with connections. This
option is fully functional only on systems running kernel 3.5 or
later.</para>
modules to be enabled for association with connections
(comma-separated). This option is fully functional only on systems
running kernel 3.5 or later.</para>
<para>The module names allowed in this list are <emphasis
role="bold">amanda</emphasis>, <emphasis
@ -297,7 +308,19 @@
role="bold">pptp</emphasis>, <emphasis
role="bold">sane</emphasis>, <emphasis role="bold">sip</emphasis>,
<emphasis role="bold">snmp</emphasis> and <emphasis
role="bold">tftp</emphasis>.</para>
role="bold">tftp</emphasis>. If you don't want a particular helper
module loaded, then:</para>
<itemizedlist>
<listitem>
<para>List it in the DONT_LOAD option; and</para>
</listitem>
<listitem>
<para>Explicitly list those helpers that you do want in
HELPERS.</para>
</listitem>
</itemizedlist>
</listitem>
</varlistentry>