Free tunnels software for linux

utunnel is a tool that lets you tunnel all IP traffic (TCP, ICMP, etc.) over UDP. It also allows for the endpoints of these packets to be spoofed as other machines on your unswitched LAN (think wireless or hubs). This tool is simply a proof of concept and the actual uses are left to your choice.


In order to use udptunnel, libnet and libpcap are required. I havent tested with any versions other than:

libpcap >= 0.8.1
libnet >= 1.1.2.1

Install instructions can be found in the INSTALL file, but the eager can
get away with issuing the following commands:

./configure
make
make install

HTTunnel is a universal HTTP tunnel using Apache, mod_perl and Perl.

To install this module do the following:

perl Makefile.PL
make
make test
make install

Note 1: The test suite will require the URL to an Apache::HTTunnel server to run. You will prompted for it during the installation. This server must allow tunnels to localhost:80. That Apache server must also return an HTTP 200 code for a "GET / HTTP/1.0" request.
Generally if the server has index.html file in the document root it will be ok.

Enhancements: Converted to work with Apache 2.2.x.

Autotunnel is a small Project for setting up ipip-tunnel automatically. This can give you the possibility to have a static ip address although you get a dynamic address by your dial-in provider. You need Linux-2.2.x or 2.4.x kernel on the server and the client to run it. (with ipip support of course)


A client have to connect to an autotunnel daemon, which is setting up the ipip tunnel after the client has authentificated. Authentification is done via PAM, SSL encrypted. So you need libpam and libssl libcrypt

Change into the diectory where you unpacked the tar-ball. Have a look at the Makefile and type make and make install . If you need a new certificate - key pair type make key
The certificate and key is installed /var/autotunnel.

StdioTunnel project allows you to tunnel arbitrary TCP connections through any shell access connection.

If the connection provides a clear 8-bit data path and allows you to start programs, you can use it with StdioTunnel.

It tunnels TCP connections in much the same way SSH does, but is useful in particular cases where SSH port forwarding is disabled, and it does not require running or changing the configuration of any server processes on either side of the connection.

Once StdioTunnel handshakes, the connection you used to initiate it is no longer available. The local StdioTunnel process will ignore further input. The connection is shut down when you kill the StdioTunnel process at either end.

All that is required for StdioTunnel to make a connection is that the standard input and output of the remote side appear to be connected through an 8-bit clear channel to the standard input and output of the process started by the local side. ssh with the -e none option to turn off the escape character works quite nicely as the connecting process.

Please note that using ANY software, StdioTunnel included, to work-around firewall restrictions may make systems on either side of the firewall more vulnerable to any number of attacks. StdioTunnel may have bugs that make such vulnerabilities even worse. The user takes sole responsibility for any adverse consequences of using this software.

HTTPTunnel is a simple client/server application for creating an HTTP tunnel between two machines, optionally via a Web proxy.
This is a small application for tunnelling an arbitrary TCP socket connection over HTTP. It can be used, for example, to tunnel traffic out from behind a restrictive firewall that only allows outgoing HTTP web connections.
The basic idea is that you run an instance of the HTTP Tunnel application locally in client mode, that then connects out to another instance that you run at the remote end of the tunnel in server mode.
You then connect to the local client end of the tunnel with the application whose traffic you wish to tunnel, and all communications are then wrapped in HTTP. The tunnel may also go via a HTTP proxy, either explicitly or transparently.
Enhancements:
- This release includes some major bugfixes and improvements in the tunneling error detection and retransmission code.
- It also introduces support for building and running under Cygwin.

JSecureTunneling provides a Java SSH client for tunnels management.

SecureTunneling is a Java SSH client that is entirely oriented toward the management of SSH tunnels, offering the ability to establish secure and permanent tunnels to a remote SSH server transparently, just like a simple network connection.

The key features are: auto-reconnection, connection monitoring, connection triggers, tunneling changes on-the-fly, and profile management.