UDP Port 1900 – SSDP / UPnP (Network Service Discovery)
About UDP Port 1900
The Internet Assigned Numbers Authority (IANA) registers port 1900 for ssdp. The IANA description reads: ‘SSDP’. This port appears in 8 IDS rules and does not have notable malware activity indicators in our data.
IDS Rule References
8 IDS / security rules reference UDP port 1900. Presence in IDS rules does not mean traffic on this port is malicious. These are patterns security tools monitor.
Rule categories (top 5): attempted-admin (4), misc-attack (1), network-scan (1), attempted-dos (1), attempted-recon (1).
Sample rule descriptions for UDP port 1900:
- OS-WINDOWS Microsoft Windows UPnP malformed advertisement
- INDICATOR-SCAN UPnP service discover attempt
- SERVER-OTHER libupnp command buffer overflow attempt
- SERVER-OTHER libupnp command buffer overflow attempt
- SERVER-OTHER SSDP M-SEARCH ssdp-all potential amplified distributed denial-of-service attempt
Data Sources
This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry, Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range), and Snort Community Rules (GPLv2).