Listening post

A listening post is a covert operations centre for monitoring communications and territory (as of an enemy) between space-faring civilisations.

In 2151, Captain Jonathan Archer uncovered a Vulcan listening post hidden at the temple of P'Jem that was secretly spying on Andorian space. 

The Obsidian Order maintained several listening posts near the Badlands to monitor activity in and around the area. Following the collapse of that organisation the Cardassian Central Command took over these posts and used them during the Dominion War to monitor Federation activity around the Badlands. One of these installations was captured by Starfleet Marines from the USS in late 2374.

Around the start of 2375, the Dominion covertly transported a small team to the planet Caprius III to set up a unmanned listening post. The post was to intercept communications from a nearby Federation subspace relay. The post was uncovered by Captain Jonathan Masters and Lieutenant Commander Kristin Sela with the help of a local. It was destroyed by Masters after he set the post's power generators to overload.