The Gedana post was a station where Arjin's father was a pilot instructor for forty years in the 24th century. (DS9: "Playing God")
This outpost was only mentioned in dialogue.
It is unclear whether this post was operated by the Trill
, the Federation
, or someone else. According to the Star Trek Encyclopedia (4th ed., vol. 1, p. 300), Gedana Post was a Trill base.