Port 102
iso-tsap · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | iso-tsap |
Frequently asked questions
What is port 102 used for?
Port 102 is registered with the IANA for iso-tsap (TCP/UDP). Description: ISO-TSAP Class 0.
Is port 102 a well-known port?
Yes. Port 102 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 102 is open?
Locally on Linux with ss -tulpn | grep ':102\b', on Windows with netstat -ano | findstr :102. To test a remote host use Test-NetConnection <host> -Port 102 in PowerShell or nc -zv <host> 102 on Linux/macOS.
How do I open port 102 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 102/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=102/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 102" -Direction Inbound -Protocol TCP -LocalPort 102 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | iso-tsap | ISO-TSAP Class 0 |
| UDP | iso-tsap | ISO-TSAP Class 0 |