Port 4073

iRAPP · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
ServiceiRAPP
Registered2007-08-20
Modified2016-11-23

Frequently asked questions

What is port 4073 used for?

Port 4073 is registered with the IANA for iRAPP (TCP/UDP). Description: Interactive Remote Application Pairing Protocol.

Is port 4073 a well-known port?

No. Port 4073 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4073 is open?

Locally on Linux with ss -tulpn | grep ':4073\b', on Windows with netstat -ano | findstr :4073. To test a remote host use Test-NetConnection <host> -Port 4073 in PowerShell or nc -zv <host> 4073 on Linux/macOS.

How do I open port 4073 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4073/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4073/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4073" -Direction Inbound -Protocol TCP -LocalPort 4073 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPiRAPPInteractive Remote Application Pairing Protocol
UDPiRAPPInteractive Remote Application Pairing Protocol

Nearby entries