Port 4737

ipdr-sp · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceipdr-sp
Registered2005-08

Frequently asked questions

What is port 4737 used for?

Port 4737 is registered with the IANA for ipdr-sp (TCP/UDP). Description: IPDR/SP.

Is port 4737 a well-known port?

No. Port 4737 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4737 is open?

Locally on Linux with ss -tulpn | grep ':4737\b', on Windows with netstat -ano | findstr :4737. To test a remote host use Test-NetConnection <host> -Port 4737 in PowerShell or nc -zv <host> 4737 on Linux/macOS.

How do I open port 4737 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4737/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4737/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4737" -Direction Inbound -Protocol TCP -LocalPort 4737 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPipdr-spIPDR/SP
UDPipdr-spIPDR/SP

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