Port 854

dlep · TCP/UDP

RangeSystem/well-known port (0–1023)
ProtocolTCP/UDP
Servicedlep
ReferenceRFC 8175
Registered2017-04-03

Frequently asked questions

What is port 854 used for?

Port 854 is registered with the IANA for dlep (TCP/UDP). Description: Dynamic Link Exchange Protocol (DLEP).

Is port 854 a well-known port?

Yes. Port 854 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.

How do I check whether port 854 is open?

Locally on Linux with ss -tulpn | grep ':854\b', on Windows with netstat -ano | findstr :854. To test a remote host use Test-NetConnection <host> -Port 854 in PowerShell or nc -zv <host> 854 on Linux/macOS.

How do I open port 854 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 854/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=854/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 854" -Direction Inbound -Protocol TCP -LocalPort 854 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPdlepDynamic Link Exchange Protocol (DLEP)
UDPdlepDynamic Link Exchange Protocol (DLEP)

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