Free transfer server software for linux

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.

Simple File Transfer is a pure useless program which allows you exchange files with remote computers via Internet. This program has been written for personnal use, so dont blame me if you think I am stupid doing such tool for the others.
It should run on every POSIX compliant Operating System, but I cant give you any complete list.
If you want to compile it under *BSD, maybe youll have to disable the uname() call by running the configure script with the --with-uname=no option.
Enhancements:
- Added the support of hostnames for the destination server

btrcv is a python wrapper for gnome-obex-server.

btrcv project loads gnome-obex-server in the background and presents a small window with transfer progress, and allows you to open or reveal a file as it is transferred.

SMTPGuard is a tool which controls the flow of email traversing an MTA (Mail Transfer Agent). It is designed to be used on an SMTP server for incoming mail, and currently supports postfix.
SMTPGuard was originally created to meet the needs of Internet Service Providers (ISPs). ISPs typically receive tremendous amounts of email from their local (user) network.
Within a wide variety of users, some are spammers, many unknowingly have virus infected PCs; each of these can send large quantities of mail through the ISPs SMTP (Simple Mail Transfer Protocol) servers.
This is especially a problem for ISPs who are connected to their users via high speed lines such as fiber or ADSL. SMTPGuard was developed to prevent SMTP servers from being overwhelmed by unexpected spikes in usage from specific (often malicious) users.
For a large ISP, their only problem isnt just with overloaded incoming SMTP servers. SPAM will also be queued on the outgoing server (perhaps the same server) for delivery to the Internet.
Because the mail is SPAM it will likely bounce, then double bounce putting extreme load on the outgoing server and its queue. smtpguard is designed to stop this type of extreme load by stopping floods of mail at the gate (incoming server).
SMTPGuard is point based. Each time a client connects to the SMTP server, SMTPGuard adds points according to the rules file. SMTPGuard uses information acquired during the SMTP session, adds points according to the rules file, and finally takes actions based on its settings. For example, the information below is used:
- Remote IP Address
- Character string provided by MAIL FROM command
- Character string provided by RCPT TO command
The following actions can be taken:
ok - white list
wait - delay processing
reject - reject messages
mail - send alert email to administrator
log - output message to log
delete - delete record in database
Enhancements:
- postfix/flexguard.c: remove word flexguard. use smtpguard instead. rename filename to postfix/smtpguard.c
- postfix/Makefile.am: rename flexguard -> smtpguard
- configure.in: 1.1.1
- rename FLEXGUARD_{CFLAGS,LIBS} -> SMTPGUARD_{CFLAGS,LIBS}
- smtpguard/Makefile.am,postfix/Makefile.am,test/Makefile.am: Ditto
- debian/postfix-smtpguard.files: added
- README.postfix: added

Grapple is a network layer, designed for games but usable anywhere. However, it also allows for more. It features simple client-server networking that keeps all clients aware of all other clients, passworded servers, and data transfer via TCP, UDP, or reliable UDP.
Advanced features include network messaging via push, pull, or a combination, multiple methods of querying users, user groups for client bandwidth saving, network load reacting data transmission and retransmission, background pinging to monitor network states, server failover, and a fully functional lobby system.
Enhancements:
- This release improves the UDP layer to work through NAT in most situations, fixes server failover issues, and increments the internal protocol number due to changes in the UDP protocol.

C++ Server Pages is a partial Java server pages and servlet implementation in C++. C++ Server Pages is written as Apache 2.0 modules, with the focus on performance.

Fast Data Transfer is an application for efficient data transfers that is capable of reading and writing at disk speed over wide area networks (with standard TCP).
It can be used to stream a large set of files across the network, so a large dataset composed of thousands of files can be sent or received at full speed, without the network transfer restarting between files.
The project is written in Java, runs an all major platforms, and is easy to use.
Main features:
- Streams a dataset (list of files) continuously, using a managed pool of buffers through one or more TCP sockets.
- Uses independent threads to read and write on each physical device
- Transfers data in parallel on multiple TCP streams, when necessary
- Uses appropriate-sized buffers for disk I/O and for the network
- Restores the files from buffers asynchronously
- Resumes a file transfer session without loss, when needed