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doc:appunti:linux:sa:nf_conntrack_expect [2025/01/10 14:46] – [Shorewall and helpers] niccolodoc:appunti:linux:sa:nf_conntrack_expect [2025/03/14 10:05] (current) – [Shorewall and helpers] niccolo
Line 159: Line 159:
  
 <code> <code>
 +CT:helper:sip:PO
 </code> </code>
  
 +In this case the helper is instantiated into the raw table in both PREROUTING and OUTPUT chains.
  
-FIXME ... edit shorewall-conntrack or shorewall-rules.+The default **Debian 12 Bookworm** configuration for Shorewall provides a **conntrack** file where helpers are enabled only if the Shorewall **AUTOHELPERS** option is enabled (in ''shorewall.conf'') and if the **CT_TARGET** iptables/netfilter capability is available (verify the output of ''shorewall show capabilities''). 
 + 
 +==== Shorewall upgrade from Debian 11 to 12 ==== 
 + 
 +In Debian, upgrading to **Shorewall 5.2.8** as per upgrade from **Debian 11 Bullseye** to **Debian 12 Bookworm**, connection tracking protocol helpers are no longer globally enabled by default; use **shorewall-conntrack(5)** or **shorewall-rules(5)** to enable them as appropriate where they are required. 
 + 
 +Setting **AUTOHELPERS** to 'Yes' in shorewall.conf restores the previous behavior.
  
 ===== Web references ===== ===== Web references =====
doc/appunti/linux/sa/nf_conntrack_expect.1736516777.txt.gz · Last modified: 2025/01/10 14:46 by niccolo