UDP Port 465 – SMTPS (Implicit-TLS Mail Submission)

About UDP Port 465

Port 465 is registered with the Internet Assigned Numbers Authority (IANA) for igmpv3lite. The IANA description reads: ‘IGMP over UDP for SSM’. 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), and Snort Community Rules (GPLv2).