Free gnutella p2p software for linux

Gtk-Gnutella is a server/client for Gnutella. It runs on every Unix-like system which supports GTK+ (1.2 or above) and libxml. Gnome is not required.
It is currently developed and tested under Linux (Debian 2.2) and is known to run at least on Linux, FreeBSD, NetBSD, OpenBSD, Darwin, Solaris, Tru64 UNIX (OSF/1), SGI IRIX, BeOS whereas CPU architectures include x86, AMD64, PowerPC, SPARC, MIPS.
gtk-gnutella project is released under the GNU General Public License (GPL).
Gtk-Gnutella is not finished yet, but it is fully functional: you may share, search, and download. And it is stable too, users usually just leave it run unattended for days.
Main features:
- Share files on the gnutella network (Limewire, BearShare, Xolox, Gnucleus, Shareaza, Morpheus ...)
- Compressed GNet connections
- Simultaneous downloading of files from multiple hosts (swarming)
- Passive searches
- Searching by urn:sha1: and magnet:
- Automatic aquisition of additional sources via download mesh and watching searches
- Powerful filtering engine
- Bandwidth management/limiting
- A lot of settings
- A lot of statistics
Enhancements:
- Features include server-side support for Tigertree hashes and THEX, improved spam filters, paused downloads, and a query syntax for easier creation of result filters.
- There were also many bugfixes and other changes.

Qtella is a peer-to-peer client using Gnutella protocol.
Sharing files over decentralized networks (peer-to-peer) has become very popular. The Gnutella network (Gnet) is one of these p2p networks which is an open network. The advantage of a decentralized network is that no server exists, which could be a single point of failure. Instead, every client acts as client and server at the same time. Due to this fact these clients are often called Servents. But using decentralized networks has also disadvanteges. The main drawback of missing central servers is that connecting to the net takes longer.
Qtella is one of these servents for Linux for the Gnutella network with many useful features. Most of these features are taken from the comments and suggestions of Qtella users. I want to thank all of these users. Qtella is written in C++ and uses the Qt libraries. It is available for Linux/Unix. Also a developer version for the Sharp Zaurus exists. A Win32 version is currently in progress (an alpha version is already available but its very unstable). [cCOPYRIGHT=1]
Main features:
- display incoming searches
- logging of errors, warnings and infos
- rename files
- move downloads into different directories
- statistics of connections and session
- select different styles
- select different fonts
- show download status in download tab by colored balls
- block specified hosts
- fast connection mechanism
- multiple search
- continue interrupted downloads
- uploads
- limit number of downloads and uploads
- limit upload bandwidth
- separate unfinished downloads from finished ones
- download of several files at once
- test whether file allready exists
- identification of download server
- automatic retry if error, busy, closed
- auto connect list
- KDE integration
- save host list
- handle extended gnutella protocol
- status lines and statistics
- accecpt incoming connections
- download from firewalled hosts
- pong cache to reduce network traffic
- advanced search: "+" word must exist, "-" word must not exist
- resume interrupted downloads

Cutlass is a cross-platform system for secure peer to peer communication, oriented towards small groups. It provides IM and file transfer. A major design goal is to be easy to use, even by non-security conscious users. The Cutlass main goals are :

Easy enough to use for broad adoption
Coded using widely supported APIs, to be multiplatform
Secure by default, using encrypted channels
Useful for everyday Internet functionality. Transmit sound, files, text.
P2P as independent of central servers/failure points as possible.
Extendable (both in functionality and paranoia)
Not dependent on central servers

Cutlass is currently under development. The current version provides message, file and voice transmission, but grouping, directory services and connection forwarding are not yet implemented.

Cutlass was originally named DEFJAM (Distributed, Encrypted File Journalling And Messaging), and was the subject of a presentation at Notacon.

FTwall is short for Fast Track traffic Firewall, a P2P traffic filtering script, for Kazaa blocking.
Ftwall-2 is an updated version of the original ftwall-1 software which adds new P2p protocols to the set it can control.
Ftwall-2 is an add-on for linux firewalls that allows the control of "Fast Track" peer-to-peer traffic (such as is used by "Kazaa" and its derivatives), WinMX and others using the OpenNAP protocol.
It is designed to block network traffic from P2P client applications running in the "home" (or "green") network from making access to any peers on the public internet. It is designed primarily for use in networks where the security reigme allows "open access" for outbound connections and "tightly limited" access for inbound ones. Ftwall-2 can be used in networks like this to prevent outbound P2P access from the supported protocols, hence restricting illegal file downloads and uploads.
A Fast track "home network" client that establishes an "outbound" connection is (worryingly) immediately available to accept inbound connections through the established TCP/IP socket - even if the gateway firewall blocks all in-bound connections via "normal" TCP/IP and UDP mechanisms. This is a kind of limited "tunnelling" and gives rise to a number of concerns. Other P2P applications and protocols present similar security challenges. Ftwall solves this (and other) problems for the protocols it understands.
Version 1 of ftwall controlled the Fast Track protocol only (Kazaa et al).
Version 2 of ftwall (the version discussed on this page) adds logic to allow blocking of traffic from WinMX and OpenNap clients using a mechanism based on DNS name wildcards. One simple example is the control of WinMXs native protocol which can be blocked by preventing access to IP addresses resolved from any domain name that ends "winmx.com". OpenNAP is similarly controlled using DNS wildcards to "train" ftwall. See the man page (etc) for these new features by following the links at the bottom of the page.
FTwall-2 runs on Linux-based firewalls using kernel 2.4 (tested with 2.4.20) or later and iptables (test with version 1.2.6). This combination of version numbers is the current set employed by RedHat 8.0 - which is the system on which the software has been developed. The software has also been tested briefly on RedHat 9 and Fedora - but I am awaiting more in-depth news of these and other Linux distributions.
FTwall-2 runs well on the "ipcop" firewall, version 1.3.0 (GPL) with the QUEUE target and string match modules added manually. I believe that it will similarly run on Smoothwall 2 (GPL) although I have not tested this. It will NOT run on Smoothwall 1.0 since this is an "ipchains" based firewall, not an "iptables" one.
FTwall-2 has been tested with the following P2P client applications:
Kazaa 2.1.1, 2.5-beta2, 2.5.1
Kazaa Lite 2.0.2, K++ 2.4.3
iMesh 4.1 build 132, 4.2 build 138
Grokster 1.7
WinMX 3.31
Version restrictions:
- Ftwall requires Linux kernel version 2.4, equipped with "iptables" and the "QUEUE" target. The "ip_string" match module of iptables is desirable, but not required.
- Ftwall works with the "current" version of the Fast track, WinMX and OpenNAP network protocols at the time of writing (July 2004). It is possible that it will need to be re-worked if the protocols are changed in future.
- Ftwall does not block the "SOCKS PROXY" connection option of FastTrack. For a complete lock-down, the firewall must block this style of traffic.

Guarddog is a firewall configuration utility for Linux systems. It is aimed at two groups of users. Novice to intermediate users who are not experts in TCP/IP networking and security, and those users who dont want the hastle of dealing with cryptic shell scripts and ipchains/iptables parameters.
Main features:
- Easy to use goal oriented GUI. You say what the firewall should do without having to explain all the details of how it should do it.
- Application protocol based. Unlike other tools, Guarddog does not require you to understand the ins and outs of IP packets and ports. Guarddog takes care of this for you. This also reduces the chances of configuration mistakes being made which are a prime source of security holes.
- Doesnt just generate the firewall once and forgets it. Guarddog lets you maintain and modify the firewall in place.
- Hosts/networks can be divided into Zones. Different zones can have different security policies for different.
- Supports the following network protocols: FTP, SSH, Telnet, Linuxconf, Corba, SMTP, DNS, Finger, HTTP, HTTPS, NFS, POP2, POP3, SUN RPC, Auth, NNTP, NETBIOS Name Service, NETBIOS Session Service, IMAP, Socks, Squid, pcANYWHEREstat, X Window System, Traceroute, ICQ, PowWow, IRC, PostgreSQL, MySQL, Ping, Quake, QuakeWorld, Quake 2, Who Is, Webmin, ICMP Source Quench, ICMP Redirect, Real Audio, Line Printer Spooler, syslog, NTP, NetMeeting, Gnutella, LDAP, LDAP-SSL, SWAT, Diablo II, Nessus, DHCP, AudioGalaxy, DirectPlay, Halflife, XDMCP and Telstras BigPond Cable, CDDB, MSN Messenger, VNC, PPTP, Kerberos, klogin, kshell, NIS, IMAPS, POP3S, ISAKMP, CVS, DICT, AIM, Fasttrack, Kazaa, iMesh, Grokster, Blubster, Direct Connect, WinMX, Yahoo! Messenger, AH, ESP, Jabber, EsounD, Privoxy, eDonkey2000, EverQuest, ICP, FreeDB, Elster, Yahoo games, Legato NetWorker backups, Novell Netware 5/6 NCP, Bittorrent, rsync, distcc, Jabber over SSL, PGP key server, Microsoft Media Server and gkrellm.
- Protocols not supported in the list above can be entered in directly.
- Supports router configurations.
- Runs on KDE 2 or 3, and Linux 2.2, 2.4 and 2.6 series kernels.
- Supports advanced Linux 2.4+ iptables features such as connection tracking and rate limited logging.
- Firewall scripts can be Imported/Exported for use on machines other than the current one.
- DHCP support.
- Uses a "what is not explicitly allowed, is denied" philosophy. Fail-safe design.
- Well documented with tutorials and reference material.
- Licensed under the terms of the GNU General Public License. Is Free and will remain Free.

Streamripper started as a way to separate tracks via Shoutcasts title-streaming feature. This has now been expanded into a much more generic feature, where part of the program only tries to "hint" at where one track starts and another ends, thus allowing a mp3 decoding engine to scan for a silent mark, which is used to find an exact track separation.
Streamripper was started sometime back in early 2000. Streamripper started as a way to separate tracks via Shoutcasts title-streaming feature. This has now been expanded into a much more generic feature, where part of the program only tries to "hint" at where one track starts and another ends, thus allowing a mp3 decoding engine to scan for a silent mark, which is used to find an exact track separation.
This is not surprising because portability was a constant consideration during development.Streamripper is now part of the FreeBSD standard distribution, mentioned in the Linux MP3 HOWTO, known to compile on many platforms such as Linux, Windows, FreeBSD, BeOS, OS/2.
With the emergence of file sharing protocols such as Napster, Gnutella, and now Mojonation and Freenet, the average Internet user can download nearly any mp3 he wants in a matter of no time, but many times people dont know what they want. Streamripper allows you to download an entire station of music. Many of these mp3 radio stations only play certain genres, so you can now download an entire collection of goa/trance music, an entire collection of jazz, punk rock, whatever you want.
Enhancements:
- Fix bug where external program wasnt being killed when reconnecting.

MultiMediaBox provides several features in a single application. The program supports the installation and removal of plugins to provide the functionalities.

MultiMediaBox comes with the following plugins already installed:

- MediaPlayer: With this plugin you can play video and sound files in several formats (.mp3, .mpeg, ...).
- P2P: With the P2P plugin, the user can enter in P2P networks like FastTrack, Gnutella and OpenFT.
- SMS: You can send SMS through the clickatell SMS gateway (http://www.clickatell.com).
- MSN: With the MSN plugin, the user can talk with friends in MSN.

The MultiMediaBox project is developing new plugins to make the program even more flexible.

iptables-p2p is an iptables match module capable of matching various peer-to-peer networks. It works by examining the application-layer protocol.
This is how you install iptables-p2p:
1. Copy the iptables headers to an appropriate place (/usr/include) or install the iptables-dev package if your distro has one. (see Installing iptables headers)
2. Run make in order to compile iptables-p2p.
3. Insert the kernel/ipt_p2p.o module directly using insmod or copy it into your modules directory. If you are using a 2.6 kernel, the module is named kernel/ipt_p2p.ko.
4. Insert the iptables library libipt_p2p.so into the iptables lib directory (usually /lib/iptables).
Enhancements:
- 0.3.0a
- Fixed iptables-save/iptables-restore
- Fixed module versioning support