Port 774
acmaint-dbd, acmaint_dbd and rpasswd · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | acmaint-dbd, acmaint_dbd and rpasswd |
Frequently asked questions
What is port 774 used for?
Port 774 is registered with the IANA for acmaint-dbd, acmaint_dbd and rpasswd (TCP/UDP). Description: ; IANA assigned this well-formed service name as a replacement for "acmaint_dbd"..
Is port 774 a well-known port?
Yes. Port 774 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 774 is open?
Locally on Linux with ss -tulpn | grep ':774\b', on Windows with netstat -ano | findstr :774. To test a remote host use Test-NetConnection <host> -Port 774 in PowerShell or nc -zv <host> 774 on Linux/macOS.
How do I open port 774 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 774/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=774/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 774" -Direction Inbound -Protocol TCP -LocalPort 774 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | rpasswd | |
| UDP | acmaint-dbd | IANA assigned this well-formed service name as a replacement for "acmaint_dbd". |
| UDP | acmaint_dbd |