Port 4663

noteit · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicenoteit
Registered2006-02

Frequently asked questions

What is port 4663 used for?

Port 4663 is registered with the IANA for noteit (TCP/UDP). Description: Note It! Message Service.

Is port 4663 a well-known port?

No. Port 4663 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4663 is open?

Locally on Linux with ss -tulpn | grep ':4663\b', on Windows with netstat -ano | findstr :4663. To test a remote host use Test-NetConnection <host> -Port 4663 in PowerShell or nc -zv <host> 4663 on Linux/macOS.

How do I open port 4663 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4663/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4663/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4663" -Direction Inbound -Protocol TCP -LocalPort 4663 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPnoteitNote It! Message Service
UDPnoteitNote It! Message Service

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