Projects / ctunnel


ctunnel is a program for tunneling and proxying TCP or UDP connections via a cryptographic tunnel. ctunnel can be used to secure any existing TCP or UDP based protocol, such as HTTP, Telnet, FTP, RSH, MySQL, VNC, DNS, XDMCP, NFS, etc. You can also chain or bounce connections to any number of intermediary hosts.

Operating Systems

Last announcement

Ctunnel 0.4, now includes Win32 Support 04 Jun 2010 05:55

Ctunnel 0.4, along with various enhancments (including pthreads) now includes Windows XP/7/Server Support (Win32).

Recent releases

  •  13 Feb 2011 19:59

    Release Notes: This release fixes high CPU utilization, lowers heap usage, and fixes a segfault.

    •  13 Feb 2011 00:48

      Release Notes: Memory leaks in pthread code were fixed. A crash in tunnel when the destination was unavailable was fixed.

      •  04 Jun 2010 05:53

        Release Notes: Win32 support was added. Pthread is now used instead of fork(). New options were added. Miscellaneous bugs were fixed.

        •  17 May 2010 07:21

          Release Notes: Support was added for UDP tunneling, compression, syslog, and libgcrypt.

          •  27 Sep 2008 18:55

            Release Notes: A bug in name resolution in the tcp_connect function was fixed.


            Project Spotlight


            A Fluent OpenStack client API for Java.


            Project Spotlight

            TurnKey TWiki Appliance

            A TWiki appliance that is easy to use and lightweight.