Free internet gateway software for linux

The Linux UPnP Internet Gateway Device Project is an attempt to begin work on a UPnP Forum-compliant Internet Gateway Device. It allows Windows Messenger or other this kind of programs to use voice/video through a Linux firewall running Iptables.
This program only creates DNAT (portmap) entries in you firewall on the external interface (public ip). Any other firewall code must be set to allow basically all tcp and udp through the FORWARD chain to your client machines, and the client machines must be able to contact the firewall using tcp and udp through the firewalls INPUT chain on it internal interface.
We will be adding some checks to see if FORWARD has a default policy of DROP or REJECT, however placing rules once we determine this is a bit tricky. Theres at the moment no real way to check to see if a packet matchin this rule will pass through any additional rules that may be located above it. Also, we will probably need to check for any rules below as well. Hopefully we can get this implemented soon.
In the meantime, please be aware of this fact, and if you are seeing Advertisements sent in the /var/log/debug file (or whatever you have syslog set to log DEBUG level messages to), but you are not seeing AddPortMaps, the most likely this is the problem, or it could be the following problem.
UPnP works with the 239.0.0.0/255.0.0.0 multicast addresses. Windows Messenger may also send request to a Unicast address, and thus the reason for the patch to the UPnP source code for this to work. Nevertheless, to add a route in your box for the multicast address, just use the following command, replaceing with the interface name of your inside interface name (i.e., eth0).
Enhancements:
- Fixed issues with Direct Play games not deleting broadcast port mappings So most if not all Direct Play games will now work correctly.
- Added Byte and Packet counter code contributed by giussani
- Changed all the xml and skl files to include our UUID and some other updatet information that needed to be changed.
- Added a CREDITS file to make sure I give thanks to the person who inspired me to write this program, along with everyone else whos contributing.
- Fixed the startup message in messages to report the correct version now.
- Once again, other small changes i cant remember

KDE Internet share wizard is a Kommander script that can help you share your internet connection over LAN.
Overview:
I was on a LAN and I needed to share my internet connection because we didnt have any router.
I found this to be quite difficult, but after some searching on internet I found a very good explanation for making this work.
Now, Ive made a WindowsXP like internet connection sharing guide for all who wants to share their internet connection easy and fast.
Usage:
copy the tar.gz file contents into /usr/bin and then run:
kdeinternetshare.sh - English
For all those who are unsure how to use the guide, it should be good to stick to the default settings.
This is only a quite simple guide so suggestions and improvments are welcome.
System requirements:
- Kommander

Wap-IRC gateway allows you to chat on IRC with any WAP-enabled mobile phone. It works by running the server program on a Unix-like system that is accessible over the Internet. It doesnt require phones which have programs written in Java.
I am Tomas Vilda, student studying at University of Vilnius, Lithuania. I started interested in wap when I bought my first wap enabled mobile phone. I searched for the running irc-wap gateway. But with no success. Actually, I found some, but no such, that I make to connect to specified IRC server. Then I found wapirc gateway written by Alan Cox . I tried it on my FreeBSD server. During compilation I got error, because of bad Makefile. So I compiled it by correcting Makefile and ran successful. My mobile is Siemens C55. To start using this wapirc gateway I have to make some modifications. They are listed below.
Enhancements:
- cgi/main():refresh included into main-cgi, saves us .htaccess and external wmlscript
- cgi/write_wml(): fixed bug in linked nicks with ACTIONs and * in there.
- server/parseinput(): Added /me Command for * ACTION in channels
- cgi/write_card(): get refresh timer from config.h
- server/removeallitems(): doing a list cleanup when disconnecting, so we can rejoin after quit without part
- server/print_out(): screenbuffer with latest messages, scrolling top down
- cgi/write_card(): reload on a regular basis, when not typing something in. New formular works on more phones, informative header
- cgi/wml_link()/wml_header(): wml1.2 compatible links/input field for accesskey element
- cgi/write_wml(): new linewise printout, italic makeup, nicks are linked setting defaultvalues for talking on channels and privat.
- cgi/main(): Expire header
- Makefile: make install

Internet Storm Center is a clone of the simple little Windows Konfabulator ISCTracker widget by Bob Rudis. It puts a little coloured globe on your desktop, with the colour of the land corresponding to the current level of Internet Storm Tracker.

Clicking on the globe takes you directly to isc.sans.org.

msn-gateway is an MSN messenger gateway for mobile phones using email and a Web server. It can be used with imode for GPRS phones.

TN3270RG is a TCP/IP TN3270 gateway that dynamically assigns resources to a connection from a pool of available addresses. Features include an easy to use web interface for management and a PostgreSQL database backend.
It is useful if you have a large number of machines connecting to a TN3270 host, but for whatever reason the host itself cannot assign resources from a pool. TN3270 will keep track of a pool of resources in a PostgreSQL database (should work with other databases as well) and dynamically allocate a resource to each connnection that goes through it.
Simply configure the daemon so it knows the address of the real TN3270 host, set the resource pool up using the web management software, and point your clients to the address of the gateway.
In the client configuration set your resource to what you have the replacement token set to (!_TN3270RG_RESOURCE_! by default) and when the daemon sees that resource go by, it will substitute the resource it has allocated for the connection and pass the rest of the data stream unaltered to the host.
TN3270 Resource Gateway project is designed to be fast and stable and should recover gracefully from most errors including unexpected disconnections and database errors. It is written in Perl and uses the POE framework.
Enhancements:
- This release uses Sys::Syslog (which is actively maintained and is included in the main Perl distribution).
- All Syslog calls have been updated to prevent a highly unlikely (but still possible) format string vulnerability.
- It cleanly exits from a SIGTERM with useful logging information.

Internet DJ console is a graphical shoutcast and icecast client that runs under GTK+ and the JACK audio connection kit. In short, its an Internet radio app for making a live radio show.
Features include two main media players with a crossfader, a jingle player, microphone signal processing (compressor and noise gate), IRC track announcements with X-Chat, an automatic stream shut-off timer, MP3 or Ogg streaming at various bit rates, aux input for connecting any audio app that is compatible with JACK, and various audio level meters.
Enhancements:
- A new, more powerful streaming architecture has been implemented with multiple streams possible, greater control over quality settings, ability to change the bitrate live on air, and the ability to stream from a prerecorded file with the metadata preserved.
- The MP3=UTF8 option has been removed, and CPU load is now reduced when the microphone is off.