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With the first part of my previous Summer of Code work, we get: -made libalias modular: -support for 'particular' protocols (like ftp/irc/etcetc) is no more hardcoded inside libalias, but it's available through external modules loadable at runtime -modules are available both in kernel (/boot/kernel/alias_*.ko) and user land (/lib/libalias_*) -protocols/applications modularized are: cuseeme, ftp, irc, nbt, pptp, skinny and smedia -added logging support for kernel side -cleanup After a buildworld, do a 'mergemaster -i' to install the file libalias.conf in /etc or manually copy it. During startup (and after every HUP signal) user land applications running the new libalias will try to read a file in /etc called libalias.conf: that file contains the list of modules to load. User land applications affected by this commit are ppp and natd: if libalias.conf is present in /etc you won't notice any difference. The only kernel land bit affected by this commit is ng_nat: if you are using ng_nat, and it doesn't correctly handle ftp/irc/etcetc sessions anymore, remember to kldload the correspondent module (i.e. kldload alias_ftp). General information and details about the inner working are available in the libalias man page under the section 'MODULAR ARCHITECTURE (AND ipfw(4) SUPPORT)'. NOTA BENE: this commit affects _ONLY_ libalias, ipfw in-kernel nat support will be part of the next libalias-related commit. Approved by: glebius Reviewed by: glebius, ru |
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| README | ||
# $FreeBSD$ A Network Address Translation Daemon for FreeBSD 1. WHAT IS NATD ? This is a simple daemon based on FreeBSD divert sockets which performs network address translation (or masquerading) for IP packets (see related RFCs 1631 and 1918). It is based on packet aliasing package (see README.alias) written by Charles Mott <cm@linktel.net>. This package works with any network interface (doesn't have to be ppp). I run it on a computer having two ethernet cards, one connected to internet and the other one to local network. 2. GETTING IT RUNNING 1) Get FreeBSD 2.2 - I think the divert sockets are not available on earlier versions, 2) Compile this software by executing "make". 3) Install the software by executing "make install". 4) See man natd for further instructions. 3. FTP SITES FOR NATD This package is available at ftp://ftp.suutari.iki.fi/pub/natd. 4. AUTHORS This program is the result of the efforts of many people at different times: Archie Cobbs <archie@whistle.com> Divert sockets Charles Mott <cm@linktel.net> Packet aliasing engine Eivind Eklund <eivind@dimaga.com> Packet aliasing engine Ari Suutari <suutari@iki.fi> Natd Brian Somers <brian@awfulhak.org> Manual page, glue and bunch of good ideas. Happy Networking - comments and fixes are welcome! Ari S. (suutari@iki.fi)