All ports
Port520/UDP
routerPort
520
Protocol
UDP
Category
Well-Known
Service
router
What is port 520?
Port 520/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the router service.
local routing process (on site); uses variant of Xerox NS routing information protocol - RIP
Useful commands
nmapnmap -p 520 -sV example.comnetcatnc -zv example.com 520curlcurl -v http://example.com:520/telnettelnet example.com 520bash(echo > /dev/udp/example.com/520) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 520/udpDeny
sudo ufw deny 520/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 520 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 520 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=520/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 520" dir=in action=allow protocol=UDP localport=520Security 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- Outdated versions with vulnerabilities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 520/UDP?
Port 520/UDP is associated with the router service. local routing process (on site); uses variant of Xerox NS routing information protocol - RIP
Is it safe to expose port 520 to the Internet?
It depends on the service and configuration. Port 520 (router) 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 520 is open?
You can use nmap: `nmap -p 520 -sV example.com`, netcat: `nc -zv example.com 520`, or the bash command: `(echo > /dev/udp/example.com/520) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 520 on my firewall?
On Linux with UFW: `sudo ufw allow 520/udp` (open) or `sudo ufw deny 520/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 520 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 520" dir=in action=allow protocol=UDP localport=520`.
What applications and services use port 520?
Port 520/UDP is used by the router service. Specific uses depend on the software and configuration. Check our related tools section for more information.