Network Requirements

The Teleport service is configured to use only standard ports 22, 80, and 443, to help with access wherever users are.

Additional configuration at the local user site may be required to allow outgoing connections. The diagram below shows the TCP ports and destination hosts used.

Currently the tsh application does not support use of proxies (HTTP_PROXY , etc). The developers are actively working on a fix for this which will be available in a forthcoming release.
The workaround is to use a TCP proxy wrapper app, such as proxychains-ng