Port 3443HP OpenView Network Node Manager Web Server

Web server for HP OpenView Network Node Manager management interfaces.

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

also known as ov-nnm-websrv, OpenView NNM Web Server, HP OpenView NNM Web Server

Technical Details

what runs on :3443

The service is a legacy web server for HP OpenView Network Node Manager. Normal client traffic uses TCP and follows HTTP semantics, typically with TLS enabled on port 3443; browsers connect to the NNM web console rather than to a general-purpose web application. The registry lists both TCP and UDP, but a web server should be expected to listen on TCP, not to exchange web traffic over UDP.

Security Information

exposure of :3443

risk score

7/ 10risk

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

web services averages 3.2 across 187 ports — this one sits 3.8 above.

in transit

encrypted

payloads are protected on the wire

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

Do not expose this management interface directly to the internet. An exposed instance can disclose topology, device and event information and provides an attack surface for authentication attacks and vulnerabilities in the legacy NNM web stack; restrict it to trusted management networks and require HTTPS with strong access controls.

Record

iana registry entry

port: :3443
service: HP OpenView Network Node Manager Web Server
transport: TCPUDP
encryption: tls / encrypted
assignment: iana registered
risk: 7/10risk
category: Web Services Network Services
usage: This port serves the HP OpenView Network Node Manager web console used to view network topology, events, and monitoring data. Engineers usually encounter it on legacy HP OpenView NNM management servers, commonly as an HTTPS service on TCP 3443; UDP is not normally used for the web interface.
lookups: 0rank 993
added: 2026-09-12
updated: 2026-09-22
references: IANA service name registry — port 3443

Something wrong?

This record is maintained by the engineers who use port 3443. 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 187 in web services →

the 8 most looked-up other ports in web services — 187 ports carry that label.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:8000	Intel Remote Desktop / Alternate HTTP Port	TCP	Web Services	safe	84.3k
:8888	NewsEDGE	TCPUDP	Web Services	caution	83.3k
:8888	HTTP Alternative Port	TCP	Web Services	caution	76.5k
:8888	GNUmp3d Streaming HTTP	TCP	Web Services	caution	76.3k
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:80	HTTP	TCPUDP	Web Services	caution	67.3k

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :3443HP OpenView Network Node Manager Web Server

Technical Details

Security Information

Related Ports

Port 3443HP OpenView Network Node Manager Web Server