Port 9899

sctp-tunneling · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicesctp-tunneling
ReferenceRFC 6951
Modified2013-04-10

Frequently asked questions

What is port 9899 used for?

Port 9899 is registered with the IANA for sctp-tunneling (TCP/UDP). Description: Reserved; SCTP TUNNELING.

Is port 9899 a well-known port?

No. Port 9899 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 9899 is open?

Locally on Linux with ss -tulpn | grep ':9899\b', on Windows with netstat -ano | findstr :9899. To test a remote host use Test-NetConnection <host> -Port 9899 in PowerShell or nc -zv <host> 9899 on Linux/macOS.

How do I open port 9899 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 9899/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=9899/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 9899" -Direction Inbound -Protocol TCP -LocalPort 9899 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCP–Reserved
UDPsctp-tunnelingSCTP TUNNELING

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