{
  "port": 8181,
  "protocol": "tcp",
  "service": "GlassFish HTTPS listener, Intermapper",
  "oneLiner": "The default HTTPS listener for GlassFish and Payara, and IANA's Intermapper port.",
  "whatItIs": "Eclipse GlassFish ships an HTTPS listener on 8181 next to its HTTP listener on 8080 and the admin console on 4848; Payara inherits the same defaults. IANA registers 8181/tcp to intermapper, HelpSystems' network management system. In practice 8181 is also a common second HTTP port for OSGi containers and Java web stacks generally, so a listener here may speak TLS or plain HTTP depending on what put it there. Probe it both ways before concluding.",
  "exposure": {
    "verdict": "careful",
    "note": "If it is GlassFish, the interesting target is the admin console on 4848 next door; a default-certificate 8181 also gives you no identity assurance."
  },
  "checkCommand": "openssl s_client -connect TARGET:8181 </dev/null 2>/dev/null | openssl x509 -noout -subject -dates",
  "links": [
    {
      "title": "Eclipse GlassFish Administration Guide (default HTTPS port 8181)",
      "url": "https://glassfish.org/docs/latest/administration-guide.html",
      "kind": "official-docs"
    },
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 8181",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=8181",
      "kind": "iana"
    }
  ],
  "ianaName": "intermapper"
}