SNMP service protocol support

modulename: nf_conntrack_snmp.ko


Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>Core Netfilter Configuration
└─>SNMP service protocol support
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
SNMP service requests are sent as broadcast messages from an
unprivileged port and responded to with unicast messages to the
same port. This make them hard to firewall properly because connection
tracking doesn't deal with broadcasts. This helper tracks locally
originating SNMP service requests and the corresponding
responses. It relies on correct IP address configuration, specifically
netmask and broadcast address.

To compile it as a module, choose M here. If unsure, say N.

source code: