Port 6633

cisco-vpath-tun · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicecisco-vpath-tun
Registered2012-06-11

Frequently asked questions

What is port 6633 used for?

Port 6633 is registered with the IANA for cisco-vpath-tun (TCP/UDP). Description: Reserved; Cisco vPath Services Overlay.

Is port 6633 a well-known port?

No. Port 6633 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 6633 is open?

Locally on Linux with ss -tulpn | grep ':6633\b', on Windows with netstat -ano | findstr :6633. To test a remote host use Test-NetConnection <host> -Port 6633 in PowerShell or nc -zv <host> 6633 on Linux/macOS.

How do I open port 6633 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 6633/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=6633/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 6633" -Direction Inbound -Protocol TCP -LocalPort 6633 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCP–Reserved
UDPcisco-vpath-tunCisco vPath Services Overlay

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