Port 3558

mcp-port · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicemcp-port
Registered2002-07

Frequently asked questions

What is port 3558 used for?

Port 3558 is registered with the IANA for mcp-port (TCP/UDP). Description: MCP user port.

Is port 3558 a well-known port?

No. Port 3558 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3558 is open?

Locally on Linux with ss -tulpn | grep ':3558\b', on Windows with netstat -ano | findstr :3558. To test a remote host use Test-NetConnection <host> -Port 3558 in PowerShell or nc -zv <host> 3558 on Linux/macOS.

How do I open port 3558 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3558/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3558/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3558" -Direction Inbound -Protocol TCP -LocalPort 3558 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPmcp-portMCP user port
UDPmcp-portMCP user port

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