Tunneling: Difference between revisions

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See also [[VXLAN]].
See also [[VXLAN]].
* Defined in 2003's [https://tools.ietf.org/html/rfc2003 RFC 2003].
* Cannot send multicast.

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* [http://packages.debian.org/search?keywords=httptunnel httptunnel] tunnels octets under HTTP
* [http://packages.debian.org/search?keywords=httptunnel httptunnel] tunnels octets under HTTP
[[CATEGORY: Networking]]
[[CATEGORY: Networking]]
==External links==
* "[https://developers.redhat.com/blog/2019/05/17/an-introduction-to-linux-virtual-interfaces-tunnels/ An introduction to Linux virtual interfaces: Tunnels]" on Red Hat Developer Blog, 2019-05-17

Latest revision as of 03:05, 1 November 2020

See also VXLAN.


  • Defined in 2003's RFC 2003.
  • Cannot send multicast.


This information largely pertains to OpenSSH, although other SSH agents ought theoretically be able to implement similar functionality.

  • Individual TCP ports can be forwarded using the -L and -R options. The latter involves an RFC 4254 "tcpip-forward"-type request.
    • Set the ExitOnForwardFailure configuration directive to yes to reliably detect forwarding failures
  • X11 can be forwarded using the -X option. This will involve "x11"-type requests.
  • Arbitrary Ethernet ("ethernet") or IP ("point-to-point") tunnel devices can be forwarded with -w.
    • The remote side must have set PermitTunnel to yes or a value matching the configured TunnelDevice type



  • snow tunnels octets under trailing whitespace in ASCII lines

Special-purpose tools

External links