Port 434

mobileip-agent · TCP/UDP

RangeSystem/well-known port (0–1023)
ProtocolTCP/UDP
Servicemobileip-agent

Frequently asked questions

What is port 434 used for?

Port 434 is registered with the IANA for mobileip-agent (TCP/UDP). Description: MobileIP-Agent.

Is port 434 a well-known port?

Yes. Port 434 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 434 is open?

Locally on Linux with ss -tulpn | grep ':434\b', on Windows with netstat -ano | findstr :434. To test a remote host use Test-NetConnection <host> -Port 434 in PowerShell or nc -zv <host> 434 on Linux/macOS.

How do I open port 434 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 434/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=434/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 434" -Direction Inbound -Protocol TCP -LocalPort 434 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPmobileip-agentMobileIP-Agent
UDPmobileip-agentMobileIP-Agent

Nearby entries