Port 11001Metasys

Metasys building-automation service assigned to TCP and UDP port 11001.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 7/10
lookups: 0

Technical Details

what runs on :11001

Metasys communications may use both TCP and UDP port 11001, with proprietary, vendor-specific messaging between Metasys servers, controllers, and related building-automation components. Public documentation does not establish a broadly interoperable handshake or framing specification for this registration; normal deployments should therefore be identified by surrounding Johnson Controls/Metasys infrastructure and traffic behavior rather than by assuming a generic application protocol. Legacy deployments may not provide encryption by default.

Security Information

exposure of :11001

risk score

7/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

system averages 2.7 across 934 ports — this one sits 4.3 above.

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

Port 11001 should not be exposed directly to the Internet: a reachable building-management endpoint can disclose facility information and may provide a path toward HVAC or other physical-system control, depending on the Metasys component and its authentication configuration. Restrict it to trusted management networks, segment building-automation systems, and use vendor-supported secure access mechanisms or a VPN.

Record

iana registry entry

port: :11001
service: Metasys
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 7/10risk
category: System
usage: This port is associated with Metasys, a building automation and management system used to monitor and control HVAC, access, and other facility equipment. Engineers typically encounter it on Metasys supervisory servers or controllers inside building-management networks rather than on public Internet hosts.
lookups: 0rank 993
added: 2026-09-15
updated: 2026-09-22
references: IANA service name registry — port 11001

Something wrong?

This record is maintained by the engineers who use port 11001. 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 2026-09-22.

01edit any field on a page of its own
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edit this record →back to the registry

Related Ports

all 934 in system →

the 8 most looked-up other ports in system — 934 ports carry that label.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:4664	Google Desktop Search	TCP	System	caution	67.2k
:8008	IBM HTTP Server Admin	TCP	Web Services	caution	58.3k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:9080	WebSphere HTTP Transport (default)	TCP	Web Services	caution	51.6k
:23	Telnet	TCP	Remote Access	caution	34.8k
:12489	NSClient Monitoring Agent	TCP	Network Services	caution	30.0k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :11001Metasys

Technical Details

Security Information

Related Ports

Port 11001Metasys