Port 4334

netconf-ch-ssh · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicenetconf-ch-ssh
ReferenceRFC 8071
Registered2016-01-12

Frequently asked questions

What is port 4334 used for?

Port 4334 is registered with the IANA for netconf-ch-ssh (TCP/UDP). Description: NETCONF Call Home (SSH); Reserved.

Is port 4334 a well-known port?

No. Port 4334 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4334 is open?

Locally on Linux with ss -tulpn | grep ':4334\b', on Windows with netstat -ano | findstr :4334. To test a remote host use Test-NetConnection <host> -Port 4334 in PowerShell or nc -zv <host> 4334 on Linux/macOS.

How do I open port 4334 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4334/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4334/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4334" -Direction Inbound -Protocol TCP -LocalPort 4334 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPnetconf-ch-sshNETCONF Call Home (SSH)
UDP–Reserved

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