Port 9998

distinct32 · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicedistinct32

Frequently asked questions

What is port 9998 used for?

Port 9998 is registered with the IANA for distinct32 (TCP/UDP). Description: Distinct32.

Is port 9998 a well-known port?

No. Port 9998 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 9998 is open?

Locally on Linux with ss -tulpn | grep ':9998\b', on Windows with netstat -ano | findstr :9998. To test a remote host use Test-NetConnection <host> -Port 9998 in PowerShell or nc -zv <host> 9998 on Linux/macOS.

How do I open port 9998 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 9998/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=9998/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 9998" -Direction Inbound -Protocol TCP -LocalPort 9998 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPdistinct32Distinct32
UDPdistinct32Distinct32

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