Port 4063

ice-router · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceice-router

Frequently asked questions

What is port 4063 used for?

Port 4063 is registered with the IANA for ice-router (TCP/UDP). Description: Ice Firewall Traversal Service (TCP).

Is port 4063 a well-known port?

No. Port 4063 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4063 is open?

Locally on Linux with ss -tulpn | grep ':4063\b', on Windows with netstat -ano | findstr :4063. To test a remote host use Test-NetConnection <host> -Port 4063 in PowerShell or nc -zv <host> 4063 on Linux/macOS.

How do I open port 4063 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4063/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4063/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4063" -Direction Inbound -Protocol TCP -LocalPort 4063 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPice-routerIce Firewall Traversal Service (TCP)
UDPice-routerIce Firewall Traversal Service (TCP)

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