Port 664
asf-secure-rmcp and oob-ws-https · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | asf-secure-rmcp and oob-ws-https |
| Registered | 2007-06 |
Frequently asked questions
What is port 664 used for?
Port 664 is registered with the IANA for asf-secure-rmcp and oob-ws-https (TCP/UDP). Description: DMTF out-of-band secure web services management protocol; ASF Secure Remote Management and Control Protocol.
Is port 664 a well-known port?
Yes. Port 664 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 664 is open?
Locally on Linux with ss -tulpn | grep ':664\b', on Windows with netstat -ano | findstr :664. To test a remote host use Test-NetConnection <host> -Port 664 in PowerShell or nc -zv <host> 664 on Linux/macOS.
How do I open port 664 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 664/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=664/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 664" -Direction Inbound -Protocol TCP -LocalPort 664 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | oob-ws-https | DMTF out-of-band secure web services management protocol |
| UDP | asf-secure-rmcp | ASF Secure Remote Management and Control Protocol |