:172
(TCP/UDP)
Low Risk
CL/1
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TCP/UDP — System & Infrastructure
Port Overview
Port Number
172
Service Name
CL/1
Transport Protocol
TCP/UDP
Category
System & Infrastructure
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 172?
Network Innovations CL/1. A connection layer protocol from Network Innovations for establishing reliable data links.
TCP/UDP
System & Infrastructure
Security Considerations
Port 172 (CL/1) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.
Recommendation: Standard security practices apply. Keep software updated and monitor access.