tmate

Instant terminal sharing (CLI)

Homepage : https://tmate.io

Applicable models: x.64 series, ARMv8 series
Applicable TOS4: on request
Applicable TOS5: 5.1.37 or later versions

App WebUI for additional settings can be accesses at:

TOS4: http(s)://yournasip:port/modules/tmate/www
TOS5: click on Support & Help from app description inside the App Center

Once installed, launch tmate with tmate. You should see something like ssh PMhmes4XeKQyBR2JtvnQt6BJw@nyc1.tmate.io appearing. This allows others to join your terminal session. All users see the same terminal content at all time. This is useful for pair programming where two people share the same screen, but have different keyboards.

tmate is useful as it goes through NATs and tolerate host IP changes. Accessing a terminal session is transparent to clients as they go through the tmate.io servers, acting as a proxy. No authentication setup is required, like setting up ssh keys.

Run tmate show-messages in your shell to see tmate's log messages, including the ssh connection string.

tmate also allow you to share a read-only view of your terminal. The read-only connection string can be retrieved with tmate show-messages.