Port 3782

iso-tp0s · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceiso-tp0s
Registered2003-06

Frequently asked questions

What is port 3782 used for?

Port 3782 is registered with the IANA for iso-tp0s (TCP/UDP). Description: Secure ISO TP0 port.

Is port 3782 a well-known port?

No. Port 3782 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3782 is open?

Locally on Linux with ss -tulpn | grep ':3782\b', on Windows with netstat -ano | findstr :3782. To test a remote host use Test-NetConnection <host> -Port 3782 in PowerShell or nc -zv <host> 3782 on Linux/macOS.

How do I open port 3782 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3782/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3782/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3782" -Direction Inbound -Protocol TCP -LocalPort 3782 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPiso-tp0sSecure ISO TP0 port
UDPiso-tp0sSecure ISO TP0 port

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