Port 178

nextstep · TCP/UDP

RangeSystem/well-known port (0–1023)
ProtocolTCP/UDP
Servicenextstep

Frequently asked questions

What is port 178 used for?

Port 178 is registered with the IANA for nextstep (TCP/UDP). Description: NextStep Window Server.

Is port 178 a well-known port?

Yes. Port 178 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.

How do I check whether port 178 is open?

Locally on Linux with ss -tulpn | grep ':178\b', on Windows with netstat -ano | findstr :178. To test a remote host use Test-NetConnection <host> -Port 178 in PowerShell or nc -zv <host> 178 on Linux/macOS.

How do I open port 178 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 178/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=178/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 178" -Direction Inbound -Protocol TCP -LocalPort 178 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPnextstepNextStep Window Server
UDPnextstepNextStep Window Server

Nearby entries