All ports
Port4691/TCP
mtnPort
4691
Protocol
TCP
Category
Registered
Service
mtn
What is port 4691?
Port 4691/TCP is a Registered port, registered with IANA for specific applications. It is associated with the mtn service.
monotone Netsync Protocol
Useful commands
nmapnmap -p 4691 -sV example.comnetcatnc -zv example.com 4691curlcurl -v http://example.com:4691/telnettelnet example.com 4691bash(echo > /dev/tcp/example.com/4691) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4691/tcpDeny
sudo ufw deny 4691/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 4691 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 4691 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4691/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4691" dir=in action=allow protocol=TCP localport=4691Security 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- Outdated versions with vulnerabilities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 4691/TCP?
Port 4691/TCP is associated with the mtn service. monotone Netsync Protocol
Is it safe to expose port 4691 to the Internet?
It depends on the service and configuration. Port 4691 (mtn) 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 4691 is open?
You can use nmap: `nmap -p 4691 -sV example.com`, netcat: `nc -zv example.com 4691`, or the bash command: `(echo > /dev/tcp/example.com/4691) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4691 on my firewall?
On Linux with UFW: `sudo ufw allow 4691/tcp` (open) or `sudo ufw deny 4691/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 4691 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4691" dir=in action=allow protocol=TCP localport=4691`.
What applications and services use port 4691?
Port 4691/TCP is used by the mtn service. Specific uses depend on the software and configuration. Check our related tools section for more information.