178
NextStep Window Server
Low RiskTCP — System & Infrastructure
Port Overview
Port Number
178
Service Name
NextStep Window Server
Transport Protocol
TCP
Category
System & Infrastructure
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 178?
Port 178 was assigned to the NeXTStep Window Server, the display server used by NeXT Computer's NeXTSTEP operating system, precursor to macOS. Completely obsolete.
TCP
System & Infrastructure
Security Considerations
Port 178 (NextStep Window Server) 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.