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Copyright (C) 2005-2008 Pablo Neira Ayuso <pablo netfilter org>
0.Introduction
==============
The conntrack-tools package contains two programs:
- conntrack: the command line interface to interact with the connection
tracking system.
- conntrackd: the connection tracking userspace daemon that can be used to
deploy highly available GNU/Linux firewalls and collect
statistics of the firewall use.
Although their names are similar, they are used for different tasks.
1. Requirements
===============
You have to install the following software in order to get the conntrack-tools
working, make sure that you have installed them correctly before going forward:
o linux kernel version >= 2.6.18 (http://www.kernel.org) that, at least,
has support for:
- connection tracking system
CONFIG_NF_CONNTRACK=m
CONFIG_NF_CONNTRACK_IPV4=m
CONFIG_NF_CONNTRACK_IPV6=m (if you need IPv6 support)
- nfnetlink
CONFIG_NETFILTER_NETLINK=m
- ctnetlink (nf_conntrack_netlink)
CONFIG_NF_CT_NETLINK=m
- connection tracking event notification API
CONFIG_NF_CONNTRACK_EVENTS=y
(To check that the event API is enabled in the kernel, make sure
you have loaded nf_netlink_conntrack module, run conntrack -E and
generate traffic, you should see network events)
o libnfnetlink: the netfilter netlink library available at:
<http://www.netfilter.org/projects/libnfnetlink/files/>
o libnetfilter_conntrack: the netfilter conntrack library available at:
<http://www.netfilter.org/projects/libnetfilter_conntrack/files/>
2.Compilation and Installation
==============================
To compile and install conntrack-tools just follow the classical steps:
$ ./configure --prefix=/usr
$ make
# make install
Up to this point, the command line interface `conntrack' is ready for use,
see man conntrack(8). However, the userspace daemon so-called `conntrackd'
requires some magic spells to get it working.
*Fedora users*: If you are trying to install the libraries in /usr/local/,
do not forget to do the following things:
* PKG_CONFIG_PATH=/usr/local/lib/pkgconfig; export PKG_CONFIG_PATH
* Add `/usr/local/lib' to your /etc/ld.so.conf file and run `ldconfig'
Check `ldd' for trouble-shooting, read <http://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html#AEN70> for more information on how libraries work.
3.How-to use and set up
=======================
Please, refer to the user manual for further information on how to use and
set up the conntrack-tools. This user manual is is available in the
documentation directory included in this tarball.
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