Port 300 — tacacss

Well-known port 300 (tcp/udp): TLS Secure Login Host Protocol (TACACSS). Service name: tacacss. Referenced in RFC9887.

port kind port status standard verification verified tier A iana-registry-row@1

registry record

value: 300

references: RFC9887

Service Name	tacacss
Port Number	300
Transport Protocol	tcp
Description	TLS Secure Login Host Protocol (TACACSS)
Assignee	[IESG]
Contact	[IETF_Chair]
Registration Date	2025-07-15
Modification Date
Reference	[RFC9887]
Service Code
Unauthorized Use Reported
Assignment Notes

source: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
version: IANA registry, Last-Modified: Fri, 29 May 2026 01:11:28 GMT
retrieved: 2026-05-29 · updated: 2026-05-29

agent: curl -H 'accept: application/json' wire.phall.io/port/300 or /port/300.json