Port 7903

tnos-dps · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicetnos-dps
Registered2005-08

Frequently asked questions

What is port 7903 used for?

Port 7903 is registered with the IANA for tnos-dps (TCP/UDP). Description: TNOS Secure DiaguardProtocol.

Is port 7903 a well-known port?

No. Port 7903 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 7903 is open?

Locally on Linux with ss -tulpn | grep ':7903\b', on Windows with netstat -ano | findstr :7903. To test a remote host use Test-NetConnection <host> -Port 7903 in PowerShell or nc -zv <host> 7903 on Linux/macOS.

How do I open port 7903 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 7903/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=7903/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 7903" -Direction Inbound -Protocol TCP -LocalPort 7903 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPtnos-dpsTNOS Secure DiaguardProtocol
UDPtnos-dpsTNOS Secure DiaguardProtocol

Nearby entries