{
  "port": 42510,
  "protocol": "both",
  "service": "CA eTrust RPC (caerpc)",
  "oneLiner": "Registered in 2005 as caerpc, the RPC channel for Computer Associates' eTrust security products.",
  "whatItIs": "42510 is one of the few ports in this range with a real IANA assignment: caerpc, \"CA eTrust RPC\", registered on both TCP and UDP in August 2005 by Computer Associates. eTrust was CA's security product line — antivirus and access control — and the port carried its RPC management traffic between agents and servers. That branding is long retired (CA became part of Broadcom), so a modern open 42510 is more often an unrelated listener or an ephemeral socket than a genuine eTrust deployment; Nmap still sees it open on about 0.1% of hosts.",
  "exposure": {
    "verdict": "never",
    "note": "An RPC control channel for security agents is a management plane — keep it inside the management network, and if the software is genuinely still running, treat its age as the bigger problem."
  },
  "checkCommand": "nmap -sV -Pn -p 42510 TARGET",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 42510 (caerpc, CA eTrust RPC)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=42510",
      "kind": "iana"
    },
    {
      "title": "nmap/nmap — nmap-services (42510 caerpc)",
      "url": "https://github.com/nmap/nmap/blob/master/nmap-services",
      "kind": "github"
    }
  ]
}