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Category: Network Utilities » Tunneling

Stunnel
Added 2004-02-16
by Michal Trojnara,
The stunnel program is designed to work as an SSL encryption wrapper between remote client and local (inetd-startable) or remote server. It can be used to add SSL functionality to commonly used inetd daemons like POP2, POP3, and IMAP servers without any changes in the programs' code. It will negotiate an SSL connection using the OpenSSL or SSLeay libraries. It calls the underlying crypto libraries, so stunnel supports whatever cryptographic algorithms you compiled into your crypto package.

LSH
Added 2004-02-09
by Niels Möller, nisse@lysator.liu.se
lsh is an implementation of the SSH protocol version 2. It is under active development. Developer contributions are welcome from both inside and outside the US.

J2SSH
Added 2004-01-11
by Richard Pernavas
J2SSH is an object-orientated Java implementation of the SSH version 2 protocol. It provides a rich, powerful, and extensible SSH API that enables developers to gain access to SSH servers and to develop entire SSH client/server frameworks. The API library provides a fully-featured SSH2 implementation specifically designed for cross-platform development. Higher level components, representing both the standard SSH client and SSH servers, are provided which implement the protocol specification for user sessions and port forwarding. The specification currently supports public key and password authentication and a full implementation of the SFTP protocol.

tinc
Added 2003-11-10
by guus
tinc is a Virtual Private Network (VPN) daemon that uses tunneling and encryption to create a secure private network between multiple hosts on the Internet. This tunneling allows VPN sites to share information with each other over the Internet without exposing any information.

Pine/SSL
Added 2003-10-22
by Nick Sayer, nsayer@quack.kfu.com
Pine/SSL adds the ability for Pine to make SSL connections to IMAP, POP, SMTP, or NNTP servers.

Autossh
Added 2003-10-20
by Carson Harding
Autossh is a program to monitor and automatically reestablish SSH connections. It is similar to rstunnel (Reliable SSH Tunnel), however, it is implemented in C, and is easier to set up and use, especially for connections to multiple hosts. Autossh has been compiled and tested on OpenBSD, Linux, and Solaris, and should run without needing changes on FreeBSD and NetBSD.

Socat
Added 2003-07-15
by Gerhard Rieger
Socat is a relay for bidirectional data transfer between two independent data channels. Each of these data channels may be a file, pipe, device (terminal or modem, etc.), socket (Unix, IP4, IP6 - raw, UDP, TCP), a client for SOCKS4, proxy CONNECT, or SSL, etc. It provides forking, logging, and dumping, different modes for interprocess communication, and many more options. It can be used, for example, as a TCP relay (one-shot or daemon), as a daemon-based socksifier, as a shell interface to Unix sockets, as an IP6 relay, for redirecting TCP-oriented programs to a serial line, or to establish a relatively secure environment (su and chroot) for running client or server shell scripts with network connections.

CCTT
Added 2003-06-04
by Simon Castro
Cctt, "Covert Channel Tunneling Tool" is a tool presenting several exploitation techniques allowing the creation of arbitrary data transfer channels in the data streams authorized by a network access control system.

Firepass
Added 2003-06-03
by Alex
Firepass is a tunneling tool, allowing to bypass firewall restrictions and encapsulate data flows inside legal ones to use HTTP POST requests. TCP or UDP based protocols may be tunneled with Firepass. For now, both - client and server parts are written in Perl. C versions will be published soon. The Firepass key feature is that you may use several type of installation of the server part script in the external network. You do not need to bind any port on the external box. Everything looks clear from local and external boxes administrators point of view. There is only an usual HTTP dialog between client and server. The only problem is that HTTP messages are sends too often.. But this is configurable in the Firepass client with a special delay option between HTTP requests. It may be applied to some non time critical protocols. Firepass may also be usable for the reverse task, when the server script is located at the corporative web server and when client interact with it from the external network.

Proxy Chains
Added 2003-03-19
by netcreature
ProxyChains is a tool for TCP tunneling via HTTP/HTTPS and SOCKS4/SOCKS5 proxy servers. It allows to run SSH,VNC,FTP,TELNET or any other program from behind proxy server.

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