{
  "port": 8899,
  "protocol": "both",
  "service": "ospf-lite (registered)",
  "oneLiner": "Registered as ospf-lite; in practice a round number people grab for their own services.",
  "whatItIs": "IANA registers 8899 on TCP and UDP as ospf-lite. Real OSPF is not a TCP service at all — it runs directly over IP protocol 89 — so this registration is for a specific product's lightweight variant rather than the routing protocol you know. Nothing widespread listens here, which leaves 8899 as another memorable HTTP-alt number that applications and proxies choose for themselves.",
  "exposure": {
    "verdict": "careful",
    "note": "Identify the owning process first; the registry name tells you nothing useful about what is answering."
  },
  "checkCommand": "sudo lsof -nP -iTCP:8899 -sTCP:LISTEN",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 8899",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=8899",
      "kind": "iana"
    }
  ],
  "ianaName": "ospf-lite"
}