All ports
Port770/TCP
cadlockPort
770
Protocol
TCP
Category
Well-Known
Service
cadlock
What is port 770?
Port 770/TCP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the cadlock service.
Useful commands
nmapnmap -p 770 -sV example.comnetcatnc -zv example.com 770curlcurl -v http://example.com:770/telnettelnet example.com 770bash(echo > /dev/tcp/example.com/770) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 770/tcpDeny
sudo ufw deny 770/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 770 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 770 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=770/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 770" dir=in action=allow protocol=TCP localport=770Security 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- Outdated versions with vulnerabilities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 770/TCP?
Port 770/TCP is associated with the cadlock service. No detailed description is available in the IANA registry.
Is it safe to expose port 770 to the Internet?
It depends on the service and configuration. Port 770 (cadlock) is a Well-Known 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 770 is open?
You can use nmap: `nmap -p 770 -sV example.com`, netcat: `nc -zv example.com 770`, or the bash command: `(echo > /dev/tcp/example.com/770) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 770 on my firewall?
On Linux with UFW: `sudo ufw allow 770/tcp` (open) or `sudo ufw deny 770/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 770 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 770" dir=in action=allow protocol=TCP localport=770`.
What applications and services use port 770?
Port 770/TCP is used by the cadlock service. Specific uses depend on the software and configuration. Check our related tools section for more information.