All ports
Port848/UDP
gdoiPort
848
Protocol
UDP
Category
Well-Known
Service
gdoi
What is port 848?
Port 848/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the gdoi service.
GDOI
Useful commands
nmapnmap -p 848 -sV example.comnetcatnc -zv example.com 848curlcurl -v http://example.com:848/telnettelnet example.com 848bash(echo > /dev/udp/example.com/848) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 848/udpDeny
sudo ufw deny 848/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 848 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 848 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=848/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 848" dir=in action=allow protocol=UDP localport=848Security 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- Outdated versions with vulnerabilities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 848/UDP?
Port 848/UDP is associated with the gdoi service. GDOI
Is it safe to expose port 848 to the Internet?
It depends on the service and configuration. Port 848 (gdoi) 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 848 is open?
You can use nmap: `nmap -p 848 -sV example.com`, netcat: `nc -zv example.com 848`, or the bash command: `(echo > /dev/udp/example.com/848) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 848 on my firewall?
On Linux with UFW: `sudo ufw allow 848/udp` (open) or `sudo ufw deny 848/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 848 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 848" dir=in action=allow protocol=UDP localport=848`.
What applications and services use port 848?
Port 848/UDP is used by the gdoi service. Specific uses depend on the software and configuration. Check our related tools section for more information.