Port 913

apex-edge · TCP/UDP

RangeSystem/well-known port (0–1023)
ProtocolTCP/UDP
Serviceapex-edge
ReferenceRFC 3340

Frequently asked questions

What is port 913 used for?

Port 913 is registered with the IANA for apex-edge (TCP/UDP). Description: APEX endpoint-relay service.

Is port 913 a well-known port?

Yes. Port 913 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.

How do I check whether port 913 is open?

Locally on Linux with ss -tulpn | grep ':913\b', on Windows with netstat -ano | findstr :913. To test a remote host use Test-NetConnection <host> -Port 913 in PowerShell or nc -zv <host> 913 on Linux/macOS.

How do I open port 913 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 913/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=913/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 913" -Direction Inbound -Protocol TCP -LocalPort 913 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPapex-edgeAPEX endpoint-relay service
UDPapex-edgeAPEX endpoint-relay service

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