Should port 1900 be open on my firewall?

Port 1900 should only be open with strict firewall rules whitelisting trusted IP addresses. Enable rate limiting and intrusion detection systems.

What transport protocol does port 1900 use?

Port 1900 (SSDP / UPnP) uses the UDP transport protocol and falls under the System & Infrastructure category.

:1900 (UDP)

SSDP / UPnP

Q: Is port 1900 (SSDP / UPnP) dangerous?

Port 1900 is classified as high risk. It is a common target for automated scanning and brute-force attacks. Restrict access to trusted IPs if exposure is necessary.

High Risk

UDP — System & Infrastructure

Port Overview

Port Number 1900

Service Name SSDP / UPnP

Transport Protocol UDP

Category System & Infrastructure

Security Risk High

Port Range Registered (1024-49151)

What is Port 1900?

Port 1900 is used by Simple Service Discovery Protocol (SSDP), the foundation for Universal Plug and Play (UPnP) device discovery. Smart TVs, routers, game consoles, and IoT devices use SSDP to advertise and discover services on local networks. This port has been exploited for amplification DDoS attacks when exposed to the internet.

UDP System & Infrastructure Commonly Used

Security Considerations

Port 1900 (SSDP / UPnP) is classified as high risk. This port is a common target for automated scanning and brute-force attacks. If you must expose it, restrict access to known IP addresses.

Recommendation: Use firewall rules to whitelist trusted IPs. Enable rate limiting and intrusion detection.

Related Ports — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Related Terms

Bandwidth Latency Packet Loss Ping Throughput ASN