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###################
Connection tracking
###################
Modules
-------
.. code-block:: none
conntrack {
modules {
ftp
h323
nfs
pptp
sip
sqlnet
tftp
}
}
Enables ``conntrack`` modules. All modules are now disabled by default, while they
used to be enabled in previous versions. Enabling the modules ensures backwards
compatibility — keeping the previous behavior.
In most cases they can be disabled by removing the block of configuration.
.. code-block:: none
delete system conntrack modules
For some scenarios it is in fact recommended, like in this example:
:ref:`example-high-availability`.
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