Port 3813

rap-ip · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicerap-ip
Registered2004-03

Frequently asked questions

What is port 3813 used for?

Port 3813 is registered with the IANA for rap-ip (TCP/UDP). Description: Rhapsody Interface Protocol.

Is port 3813 a well-known port?

No. Port 3813 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3813 is open?

Locally on Linux with ss -tulpn | grep ':3813\b', on Windows with netstat -ano | findstr :3813. To test a remote host use Test-NetConnection <host> -Port 3813 in PowerShell or nc -zv <host> 3813 on Linux/macOS.

How do I open port 3813 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3813/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3813/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3813" -Direction Inbound -Protocol TCP -LocalPort 3813 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPrap-ipRhapsody Interface Protocol
UDPrap-ipRhapsody Interface Protocol

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