All ports
Port771/TCP
rtipPort
771
Protocol
TCP
Category
Well-Known
Service
rtip
What is port 771?
Port 771/TCP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the rtip service.
Useful commands
nmapnmap -p 771 -sV example.comnetcatnc -zv example.com 771curlcurl -v http://example.com:771/telnettelnet example.com 771bash(echo > /dev/tcp/example.com/771) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 771/tcpDeny
sudo ufw deny 771/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 771 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 771 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=771/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 771" dir=in action=allow protocol=TCP localport=771Security 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- Outdated versions with vulnerabilities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 771/TCP?
Port 771/TCP is associated with the rtip service. No detailed description is available in the IANA registry.
Is it safe to expose port 771 to the Internet?
It depends on the service and configuration. Port 771 (rtip) 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 771 is open?
You can use nmap: `nmap -p 771 -sV example.com`, netcat: `nc -zv example.com 771`, or the bash command: `(echo > /dev/tcp/example.com/771) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 771 on my firewall?
On Linux with UFW: `sudo ufw allow 771/tcp` (open) or `sudo ufw deny 771/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 771 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 771" dir=in action=allow protocol=TCP localport=771`.
What applications and services use port 771?
Port 771/TCP is used by the rtip service. Specific uses depend on the software and configuration. Check our related tools section for more information.