Port 11163Sun Cacao RMI Registry

Sun Cacao's Java RMI registry endpoint, used by management agents to locate services in the Common Agent Container.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

Technical Details

what runs on :11163

Sun Cacao uses Java RMI for communication between its management components, and this registry endpoint provides the lookup step by which clients find remote services. Java RMI registry traffic normally uses TCP and the JRMP protocol; the registry can return stubs that direct clients to service endpoints on other ports. IANA lists both TCP and UDP for this assignment, but UDP is not typical for Java RMI registry communication. The registry's assignment is specific to Sun Cacao, not a general-purpose RMI port.

Security Information

exposure of :11163

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 2.6 across 1,886 ports — this one sits 0.6 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

An exposed RMI registry can reveal available remote services and provide a path to invoke them, depending on the services and access controls configured; do not expose it to untrusted networks. Java RMI does not encrypt traffic by itself, though deployments may configure secure transport. This is an uncommon management endpoint, and it has not appeared open in the cited nmap scan data.

Record

iana registry entry

port: :11163
service: Sun Cacao RMI Registry
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services System
usage: This port is assigned to the Sun Cacao RMI registry, part of the Common Agent Container used by Sun management software and Solaris systems. It is not commonly encountered on public scans; an open listener is most likely a Cacao management component on a system where that software is installed.
lookups: 0rank 993
added: 2026-10-16
updated: 2026-10-16
references: IANA service name registry — port 11163

Something wrong?

This record is maintained by the engineers who use port 11163. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-16.

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :11163Sun Cacao RMI Registry

Technical Details

Security Information

Related Ports

Port 11163Sun Cacao RMI Registry