Port 170
print-srv · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | print-srv |
Frequently asked questions
What is port 170 used for?
Port 170 is registered with the IANA for print-srv (TCP/UDP). Description: Network PostScript.
Is port 170 a well-known port?
Yes. Port 170 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 170 is open?
Locally on Linux with ss -tulpn | grep ':170\b', on Windows with netstat -ano | findstr :170. To test a remote host use Test-NetConnection <host> -Port 170 in PowerShell or nc -zv <host> 170 on Linux/macOS.
How do I open port 170 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 170/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=170/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 170" -Direction Inbound -Protocol TCP -LocalPort 170 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | print-srv | Network PostScript |
| UDP | print-srv | Network PostScript |