Port 9801

sstp-2 · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicesstp-2

Frequently asked questions

What is port 9801 used for?

Port 9801 is registered with the IANA for sstp-2 (TCP/UDP). Description: Sakura Script Transfer Protocol-2.

Is port 9801 a well-known port?

No. Port 9801 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 9801 is open?

Locally on Linux with ss -tulpn | grep ':9801\b', on Windows with netstat -ano | findstr :9801. To test a remote host use Test-NetConnection <host> -Port 9801 in PowerShell or nc -zv <host> 9801 on Linux/macOS.

How do I open port 9801 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 9801/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=9801/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 9801" -Direction Inbound -Protocol TCP -LocalPort 9801 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPsstp-2Sakura Script Transfer Protocol-2
UDPsstp-2Sakura Script Transfer Protocol-2

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