Port 196
dn6-smm-red · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | dn6-smm-red |
Frequently asked questions
What is port 196 used for?
Port 196 is registered with the IANA for dn6-smm-red (TCP/UDP). Description: DNSIX Session Mgt Module Audit Redir.
Is port 196 a well-known port?
Yes. Port 196 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 196 is open?
Locally on Linux with ss -tulpn | grep ':196\b', on Windows with netstat -ano | findstr :196. To test a remote host use Test-NetConnection <host> -Port 196 in PowerShell or nc -zv <host> 196 on Linux/macOS.
How do I open port 196 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 196/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=196/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 196" -Direction Inbound -Protocol TCP -LocalPort 196 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | dn6-smm-red | DNSIX Session Mgt Module Audit Redir |
| UDP | dn6-smm-red | DNSIX Session Mgt Module Audit Redir |