Port 456
macon-tcp and macon-udp · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | macon-tcp and macon-udp |
Frequently asked questions
What is port 456 used for?
Port 456 is registered with the IANA for macon-tcp and macon-udp (TCP/UDP). Description: macon-tcp; macon-udp.
Is port 456 a well-known port?
Yes. Port 456 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 456 is open?
Locally on Linux with ss -tulpn | grep ':456\b', on Windows with netstat -ano | findstr :456. To test a remote host use Test-NetConnection <host> -Port 456 in PowerShell or nc -zv <host> 456 on Linux/macOS.
How do I open port 456 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 456/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=456/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 456" -Direction Inbound -Protocol TCP -LocalPort 456 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | macon-tcp | macon-tcp |
| UDP | macon-udp | macon-udp |