Port 5352

dns-llq · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicedns-llq
ReferenceRFC 8764
Registered2005-08
Modified2019-08-26

Frequently asked questions

What is port 5352 used for?

Port 5352 is registered with the IANA for dns-llq (TCP/UDP). Description: DNS Long-Lived Queries.

Is port 5352 a well-known port?

No. Port 5352 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 5352 is open?

Locally on Linux with ss -tulpn | grep ':5352\b', on Windows with netstat -ano | findstr :5352. To test a remote host use Test-NetConnection <host> -Port 5352 in PowerShell or nc -zv <host> 5352 on Linux/macOS.

How do I open port 5352 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 5352/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5352/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5352" -Direction Inbound -Protocol TCP -LocalPort 5352 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPdns-llqDNS Long-Lived Queries
UDPdns-llqDNS Long-Lived Queries

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