The netfilter.org "libnetfilter_conntrack" project
What is libnetfilter_conntrack?
libnetfilter_conntrack is a userspace
library providing a programming interface (API) to the in-kernel connection
tracking state table. The library libnetfilter_conntrack has been previously known as libnfnetlink_conntrack and libctnetlink. This library is currently used by conntrack-tools among many other applications.
libnetfilter_conntrack requires libnfnetlink and a kernel that includes the nfnetlink_conntrack subsystem (initial support >= 2.6.14, recommended >= 2.6.18).
- listing/retrieving entries from the kernel connection tracking table
- inserting/modifying/deleting entries from the kernel connection tracking table
- listing/retrieving entries from the kernel expect table
- inserting/modifying/deleting entries from the kernel expect table
Since 0.9.1, this library is released under GPLv2+. Previous versions were released under GPLv2.
You can check the library documentation generated in doxygen format.
libnetfilter_conntrack has been written by Pablo Neira and Harald Welte.
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