UDP Port 81

About UDP Port 81

Port 81 is registered with the Internet Assigned Numbers Authority (IANA) for . The IANA description reads: ‘Unassigned’. This port does not currently appear in the IDS rulesets or malware activity indicators in our data sources.

Data Sources

This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry, Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range), Snort Community Rules (GPLv2), and MITRE ATT&CK (Apache 2.0).