Port 5904

ag-swim · SCTP/TCP/UDP

RangeRegistered port (1024–49151)
ProtocolSCTP/TCP/UDP
Serviceag-swim
Registered2022-06-03

Frequently asked questions

What is port 5904 used for?

Port 5904 is registered with the IANA for ag-swim (SCTP/TCP/UDP). Description: Air-Ground SWIM.

Is port 5904 a well-known port?

No. Port 5904 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 5904 is open?

Locally on Linux with ss -tulpn | grep ':5904\b', on Windows with netstat -ano | findstr :5904. To test a remote host use Test-NetConnection <host> -Port 5904 in PowerShell or nc -zv <host> 5904 on Linux/macOS.

How do I open port 5904 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 5904/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5904/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5904" -Direction Inbound -Protocol TCP -LocalPort 5904 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPag-swimAir-Ground SWIM
UDPag-swimAir-Ground SWIM
SCTPag-swimAir-Ground SWIM

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