All ports
Port1900/UDP
ssdpPort
1900
Protocol
UDP
Category
Registered
Service
ssdp
What is port 1900?
Port 1900/UDP is a Registered port, registered with IANA for specific applications. It is associated with the ssdp service.
SSDP
Useful commands
nmapnmap -p 1900 -sV example.comnetcatnc -zv example.com 1900curlcurl -v http://example.com:1900/telnettelnet example.com 1900bash(echo > /dev/udp/example.com/1900) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 1900/udpDeny
sudo ufw deny 1900/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 1900 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 1900 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=1900/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 1900" dir=in action=allow protocol=UDP localport=1900Security 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- Outdated versions with vulnerabilities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 1900/UDP?
Port 1900/UDP is associated with the ssdp service. SSDP
Is it safe to expose port 1900 to the Internet?
It depends on the service and configuration. Port 1900 (ssdp) is a Registered 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 1900 is open?
You can use nmap: `nmap -p 1900 -sV example.com`, netcat: `nc -zv example.com 1900`, or the bash command: `(echo > /dev/udp/example.com/1900) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 1900 on my firewall?
On Linux with UFW: `sudo ufw allow 1900/udp` (open) or `sudo ufw deny 1900/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 1900 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 1900" dir=in action=allow protocol=UDP localport=1900`.
What applications and services use port 1900?
Port 1900/UDP is used by the ssdp service. Specific uses depend on the software and configuration. Check our related tools section for more information.