All ports
Port69/UDP
tftpPort
69
Protocol
UDP
Category
Well-Known
Service
tftp
What is port 69?
Port 69/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the tftp service.
Trivial File Transfer
Useful commands
nmapnmap -p 69 -sV example.comnetcatnc -zv example.com 69curlcurl -v http://example.com:69/telnettelnet example.com 69bash(echo > /dev/udp/example.com/69) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 69/udpDeny
sudo ufw deny 69/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 69 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 69 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=69/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 69" dir=in action=allow protocol=UDP localport=69Security 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- Outdated versions with vulnerabilities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 69/UDP?
Port 69/UDP is associated with the tftp service. Trivial File Transfer
Is it safe to expose port 69 to the Internet?
It depends on the service and configuration. Port 69 (tftp) 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 69 is open?
You can use nmap: `nmap -p 69 -sV example.com`, netcat: `nc -zv example.com 69`, or the bash command: `(echo > /dev/udp/example.com/69) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 69 on my firewall?
On Linux with UFW: `sudo ufw allow 69/udp` (open) or `sudo ufw deny 69/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 69 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 69" dir=in action=allow protocol=UDP localport=69`.
What applications and services use port 69?
Port 69/UDP is used by the tftp service. Specific uses depend on the software and configuration. Check our related tools section for more information.