libnetfilter_conntrack is a library to manage Linux firewall NetFilter. pynetfilter_conntrack is a Python binding of this library. The binding is the file pynetfilter_conntrack.py and you have also a clone of conntrack program: conntrack.py.

conntrack.py is a clone of conntrack C program. Features:

• List connections ;
• Export connections to XML document ;
• Delete connection.

For all commands, you can filter connections with:

• source/destination address from original/reply destination ;
• layer 3 and 4 protocols ;
• source/destination port from original/reply destination (protocols tcp, udp and sctp).