Port 40842

csccredir · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicecsccredir

Frequently asked questions

What is port 40842 used for?

Port 40842 is registered with the IANA for csccredir (TCP/UDP). Description: CSCCREDIR.

Is port 40842 a well-known port?

No. Port 40842 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 40842 is open?

Locally on Linux with ss -tulpn | grep ':40842\b', on Windows with netstat -ano | findstr :40842. To test a remote host use Test-NetConnection <host> -Port 40842 in PowerShell or nc -zv <host> 40842 on Linux/macOS.

How do I open port 40842 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 40842/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=40842/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 40842" -Direction Inbound -Protocol TCP -LocalPort 40842 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPcsccredirCSCCREDIR
UDPcsccredirCSCCREDIR

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