Control a computer over the network

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There are many ways to take control over a Linux or Windows computer:

program mean possible from Windows browser enablement possible CLI only access possible
ssh (successor of telnet and rsh) issue commands to a remote computer yes3 no yes
shell in a box, ajaxterm, webmin2 issue commands to a remote computer via a browser yes yes1 no
xdmcp get a graphical login to a desktop yes no no
vnc get a graphical desktop on a remote computer, sharable with other users yes yes2 no
x11vnc take over a graphical session that has been started out of vnc no no no
guacamole share a Linux desktop over a browser yes yes no
nx get a low-latency graphical login to a desktop yes no no
rdesktop get a dedicated session on a Windows computer yes4 no no
webex, teamviewer, gotomeeting, mymeetingroom take over a graphical session using a browser yes yes no

1 you will not be able to run e.g. apache on the same port as shell in a box

2 you will not be able to cross a typical corporate network. You will need access to more ports on the server than 80 and 443

3 use mobaxterm which will give your graphical and console access

4 as command use mstsc

With WebEx and with x11vnc you will be able to take over an existing session and work jointly on it. This is useful for support and training.

See also