Port 3771

paging-port · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicepaging-port
Registered2003-06

Frequently asked questions

What is port 3771 used for?

Port 3771 is registered with the IANA for paging-port (TCP/UDP). Description: RTP Paging Port.

Is port 3771 a well-known port?

No. Port 3771 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3771 is open?

Locally on Linux with ss -tulpn | grep ':3771\b', on Windows with netstat -ano | findstr :3771. To test a remote host use Test-NetConnection <host> -Port 3771 in PowerShell or nc -zv <host> 3771 on Linux/macOS.

How do I open port 3771 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3771/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3771/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3771" -Direction Inbound -Protocol TCP -LocalPort 3771 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPpaging-portRTP Paging Port
UDPpaging-portRTP Paging Port

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