Port 3568

dof-tunnel-sec · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicedof-tunnel-sec
Registered2003-01
Modified2015-04-23

Frequently asked questions

What is port 3568 used for?

Port 3568 is registered with the IANA for dof-tunnel-sec (TCP/UDP). Description: DOF Secure Tunnel.

Is port 3568 a well-known port?

No. Port 3568 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3568 is open?

Locally on Linux with ss -tulpn | grep ':3568\b', on Windows with netstat -ano | findstr :3568. To test a remote host use Test-NetConnection <host> -Port 3568 in PowerShell or nc -zv <host> 3568 on Linux/macOS.

How do I open port 3568 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3568/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3568/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3568" -Direction Inbound -Protocol TCP -LocalPort 3568 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPdof-tunnel-secDOF Secure Tunnel
UDPdof-tunnel-secDOF Secure Tunnel

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