Free simple udp proxy pipe software for linux

Simple UDP proxy/pipe is an advanced UDP proxy/datapipe/packets forwarder and modifier with multiple functions.

Multiple clients allowed (you can connect many clients you want to this proxy), creation of ACP files (tcpdump capture files, just like a sniffer), packets forwarding (chat style, each packet is forwarded to all the other clients and server connected), packets injection (the tool opens a specific UDP port where you can send your customized packets which will be sent to the server), hexadecimal visualization and plugins support for the modification and visualization of the packets with some example plugins already included (Zdaemon huffman, Doom huffman, Half-life decoding and one for the replacement of the text strings).

Plugins (which work on both Windows and Linux) are very basic to create and use, just take a look at example_sudp.c for more informations.

IMAP Proxy server is a caching IMAP proxy server. It was written to compensate for webmail clients that are unable to maintain persistent connections to an IMAP server. Most webmail clients need to log in to an IMAP server for nearly every single transaction.

This behaviour can cause tragic performance problems on the IMAP server. imapproxy tries to deal with this problem by leaving server connections open for a short time after a webmail client logs out.

When the webmail client connects again, imapproxy will determine if theres a cached connection available and reuse it if possible.

How does imapproxy keep track of which server connection is for which user?

Upon the first successful login to the real IMAP server (through the proxy), imapproxy fills in a little record that contains the username, an md5 digital signature of the password and the server socket descriptor thats being used.

After you log out and then log back in again, imapproxy just has to find a record that matches your username and password. These records are stored in a hash table (with the username being the hash key) in memory, so the lookups are pretty fast.

Can IMAP Proxy support multiple backend servers?

If you want IMAP Proxy to be able to proxy to multiple backend IMAP servers, you can run multiple instances of IMAP Proxy and make sure each instance is looking at a different configuration file.

Before you do this, take a look at perdition which appears to have been designed with this specific task in mind.

Simple Xmms Control is a a simple SuperKaramba theme that provides XMMS control. Icons are from nuoveXT icon theme.

All suggestions are welcome!

Proxy Applet is a GNOME tray applet for changing your network proxy configuration with a single click, in a manner similar to Galeon 1.x.
Galeon used to have a single click Network Proxy selector in their menu, which I used frequently. In a discussion with Epiphany developers about this same functionality (using GConf) they argued that you could already move the Proxy Network capplet to your taskbar.
But that doesnt offer all the functionality Im looking for. What I think would be neat is:
- An applet that gives you a list of preset configurations upon a single click.
- Each configuration is called a location and could either mean:
No proxy
Manually configured proxy
Proxy Auto Configuration (PAC)
A remote URL, eg. http://pac.isp.net/path/file.pac
A local URI, eg. file:///home/user/pacs/location.pac
- When you select another location, the applet should replace your GConf settings accordingly. (GConf key: /system/http_proxy)
- A preferences dialog should allow to manage locations and even test a location (see if proxy works or check PAC syntax ?).
- In a later phase there might even be an automatic selection based on eg. the network-configuration (ip-address, network, gateway, ??). So the applet has to monitor the network configuration for changes.
- When using tsocks or dante lib, we could have a dialog to socksify the complete system. (Add it to /etc/ld.so.preload or run /etc/init.d/tsocks)

The Zaval Proxy Suite is an easy-to-use solution that allows monitoring TCP-based protocols, such as HTTP, NNTP and others. It is extremely useful in software development and can be used as a debug tool. Another area of appliance is multiple connections logging with proxy facilities. As soon as its a pure java solution it can be used almost everywhere.

The Zaval Proxy functions as a proxy and transfers data between the server and the client writing incoming and outgoing traffic into log files. So you can see these raw data as is.

On start the Zaval Proxy Suite goes through configuration file and creates the specified number of proxy servers and the shutdown server.

"Proxy server" is a server socket listening on the specified port. When the client is connected proxy connects to the target server and transfers data between them logging entire traffic. On each connection 2 files are created - xxx-input (request data from the client) and xxx-output (response data from the server). The "xxx" means here the sequential number of the connection for the proxy server. The traffic is logged into the separate directory for each proxy.

Shutdown server is needed to close all open connections correctly and close the program.

So, in the particular case you should specify address of proxy server in client application (web browser, for example) and address of the target server in the proxy configuration file. You can create any number of proxy servers that run at the same time, however, they should use different port numbers.

FSP Proxy provides a proxy server for FSP to HTTP protocol translation.
FSP Proxy is a proxy server for FSP to HTTP/1.0 protocol translation. It also accepts gopher:// URLs as an alias for fsp://. You can set it up as a gopher proxy in your browser, and easily access FSP sites.
This proxy supports HTTP/1.1 on output side and FSP v2 on input side. Subrange byte requests are supported, resume works nicely. Simply FSP v2 over HTTP/1.1. This proxy do not caches anything.
This proxy makes playing with FSP very easy for newcommers, there is no need to learn classic fsp command line interface tools. Everybody who can handle downloads in browser, can now play with FSP sites available through Internet.
Enhancements:
- use getopt from stdio.h instead of getopt.h in fspscan.c
- fspscan now compiles on AIX and other OS without glibc (hoaxter)
- !! fixed fatal bug from b23. Server sends large packets to clients if
- client request has not prefered reply size inside. This confuses
- all old fsp clients.
- common/strdup.c removed
- bsd_src/function.c bcopy -> memmove
- removed STDC_HEADER checks, drop support for pre-ANSI compilers
- started work on alternate SCons based build system
- fspd: use urandom, not random -> avoid hangs on Lin suck 2.6
- build system converted to SCons
- !! fixed directory listing bug in client library introduced in beta23
- improvements to security of FSP clients
- seq. numbers are now randomized
- seed random number generator in fsp clients
- check cmd in received packets
- check pos in received packets

Bypass Proxy Client is the complete network privacy tool. It ensures absolute privacy wherever you maybe, preventing would-be snoopers from monitoring your surfing, email, or chatting activity. You can bypass blocking filters, firewalls, and proxies. Surf, chat, read news boards, and get all your email at work, on campus (or in regions/areas that may block controversial websites).
Main features:
- Surf the internet using your own virtual network across the web.
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- Anonymously surf news groups, chat rooms, and web sites!
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- Protect your Kazaa Identity; Guard against IP tracing -- the no. 1 method
- used by the RIAA to spy on users of file shares (Kazaa, BearShare, etc.)
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- Prevent corporate networks from eavesdropping and viewing your personal information!
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- Keep your email and other personal documents private.
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- Regain access to sites that were previously blocked or filtered. Chat with friends online without concerns about eavesdropping.

Frickin PPTP Proxy is a fast PPTP proxy for any BSD system with the OpenBSD packet filter installed.
It handles bi-directional tunnels transparently and can be chained from one proxy to another over several servers.
Enhancements:
- This release fixes an endian issue with echo IDs that made the proxy unusable for a majority of users.
- There is additional information regarding a pf scrub issue in the documentation.