Port 4353

f5-iquery · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicef5-iquery

Frequently asked questions

What is port 4353 used for?

Port 4353 is registered with the IANA for f5-iquery (TCP/UDP). Description: F5 iQuery.

Is port 4353 a well-known port?

No. Port 4353 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4353 is open?

Locally on Linux with ss -tulpn | grep ':4353\b', on Windows with netstat -ano | findstr :4353. To test a remote host use Test-NetConnection <host> -Port 4353 in PowerShell or nc -zv <host> 4353 on Linux/macOS.

How do I open port 4353 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4353/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4353/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4353" -Direction Inbound -Protocol TCP -LocalPort 4353 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPf5-iqueryF5 iQuery
UDPf5-iqueryF5 iQuery

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