All ports
Port6633/UDP
cisco-vpath-tunPort
6633
Protocol
UDP
Category
Registered
Service
cisco-vpath-tun
What is port 6633?
Port 6633/UDP is a Registered port, registered with IANA for specific applications. It is associated with the cisco-vpath-tun service.
Cisco vPath Services Overlay
Useful commands
nmapnmap -p 6633 -sV example.comnetcatnc -zv example.com 6633curlcurl -v http://example.com:6633/telnettelnet example.com 6633bash(echo > /dev/udp/example.com/6633) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 6633/udpDeny
sudo ufw deny 6633/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 6633 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 6633 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=6633/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 6633" dir=in action=allow protocol=UDP localport=6633Security Risks
- Unauthorized access to the service
- Data exposure if the service is unauthenticated
- Outdated versions with vulnerabilities
- Incorrect service configuration
Frequently Asked Questions
What service runs on port 6633/UDP?
Port 6633/UDP is associated with the cisco-vpath-tun service. Cisco vPath Services Overlay
Is it safe to expose port 6633 to the Internet?
It depends on the service and configuration. Port 6633 (cisco-vpath-tun) is a Registered port. If you need to expose it, keep the service updated, use strong authentication, and configure a firewall. It's always recommended to restrict access by IP when possible.
How do I check if port 6633 is open?
You can use nmap: `nmap -p 6633 -sV example.com`, netcat: `nc -zv example.com 6633`, or the bash command: `(echo > /dev/udp/example.com/6633) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 6633 on my firewall?
On Linux with UFW: `sudo ufw allow 6633/udp` (open) or `sudo ufw deny 6633/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 6633 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 6633" dir=in action=allow protocol=UDP localport=6633`.
What applications and services use port 6633?
Port 6633/UDP is used by the cisco-vpath-tun service. Specific uses depend on the software and configuration. Check our related tools section for more information.