Port 436
dna-cml · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | dna-cml |
Frequently asked questions
What is port 436 used for?
Port 436 is registered with the IANA for dna-cml (TCP/UDP). Description: DNA-CML.
Is port 436 a well-known port?
Yes. Port 436 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 436 is open?
Locally on Linux with ss -tulpn | grep ':436\b', on Windows with netstat -ano | findstr :436. To test a remote host use Test-NetConnection <host> -Port 436 in PowerShell or nc -zv <host> 436 on Linux/macOS.
How do I open port 436 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 436/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=436/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 436" -Direction Inbound -Protocol TCP -LocalPort 436 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | dna-cml | DNA-CML |
| UDP | dna-cml | DNA-CML |