Port 3661

can-ferret-ssl · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicecan-ferret-ssl
Registered2003-01

Frequently asked questions

What is port 3661 used for?

Port 3661 is registered with the IANA for can-ferret-ssl (TCP/UDP). Description: IBM Tivoli Directory Service using SSL.

Is port 3661 a well-known port?

No. Port 3661 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3661 is open?

Locally on Linux with ss -tulpn | grep ':3661\b', on Windows with netstat -ano | findstr :3661. To test a remote host use Test-NetConnection <host> -Port 3661 in PowerShell or nc -zv <host> 3661 on Linux/macOS.

How do I open port 3661 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3661/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3661/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3661" -Direction Inbound -Protocol TCP -LocalPort 3661 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPcan-ferret-sslIBM Tivoli Directory Service using SSL
UDPcan-ferret-sslIBM Tivoli Directory Service using SSL

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