{
  "port": 6580,
  "protocol": "tcp",
  "service": "Parsec master server",
  "oneLiner": "Registered as the master server port for Parsec, a 1990s space-combat game.",
  "whatItIs": "IANA lists 6580/tcp and 6580/udp as parsec-master, \"Parsec Masterserver\", assigned to the game's author. A master server is the directory a multiplayer client queries for the list of live game servers. The game has had no meaningful deployment for two decades, so an open 6580 today is almost certainly unrelated software that happened to take the port — note that it is not the modern Parsec remote-desktop product, which is a different company with different ports.",
  "exposure": {
    "verdict": "careful",
    "note": "The registration is effectively historical, so whatever answers on 6580 now is unidentified until you check the host."
  },
  "checkCommand": "sudo lsof -nP -iTCP:6580 -sTCP:LISTEN",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 6580 (parsec-master)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=6580",
      "kind": "iana"
    }
  ]
}