Users' questions

What is an M search?

by Rhyley Bryan

What is an M search?

SSDP (Simple Service Discovery Protocol) is a simple protocol designed to solve the problem of service discovery over a local network. The technology uses text-based HTTP messages over UDP (aka HTTPU) on the well-known port 1900. A client wishing to query for available services will issue a M- SEARCH command via HTTPU.

What does SSDP Discovery do?

SSDP (Simple Service Discovery Protocol) is a network protocol used in small networks, including home networks, to advertise and discover network services primarily supported by the Universal Plug-and-Play (UPnP) architecture. SSDP is an HTTPU-based textual protocol that uses XML.

What does SSDP mean in Wireshark?

Simple Service Discovery Protocol
Simple Service Discovery Protocol (SSDP) The SSDP protocol can discover Plug & Play devices, with uPnP (Universal Plug and Play). SSDP uses unicast and multicast adress (239.255. 255.250). SSDP is HTTP like protocol and work with NOTIFY and M-SEARCH methods.

Should I disable SSDP?

Disable SSDP/UPnp unless SSDP/UPnP is absolutely necessary.

What is mDNS traffic?

In computer networking, the multicast DNS (mDNS) protocol resolves hostnames to IP addresses within small networks that do not include a local name server. It was designed to work as either a stand-alone protocol or compatibly with standard DNS servers.

How do I enable SSDP Discovery?

Resolution

  1. Launch the Windows Services snapin.
  2. Locate the SSDP Discovery service.
  3. Double click to open the properties box.
  4. Set the service to Manual, click Apply and OK.
  5. Now go back to the Network Discovery setting and enable Turn on network discovery.
  6. Once you click Apply and OK, the setting should stay.

Should I disable SSDP Discovery Service?

If you don’t need SSDP and UPnP then you can disable SSDP Discovery Service. SSDP Discovery service is required for UPnP and Media Center Extender (as per Windows Services > Dependencies tab for SSDP discovery) and so if you don’t need UPnP it won’t have any negative affects.

What is SSDP traffic?

A Simple Service Discovery Protocol (SSDP) attack is a reflection-based distributed denial-of-service (DDoS) attack that exploits Universal Plug and Play (UPnP) networking protocols in order to send an amplified amount of traffic to a targeted victim, overwhelming the target’s infrastructure and taking their web …

Should I disable SSDP Discovery?

Is SSDP multicast?

SSDP is a text-based protocol based on HTTPU. It uses UDP as the underlying transport protocol. Services are announced by the hosting system with multicast addressing to a specifically designated IP multicast address at UDP port number 1900.

How do I block SSDP protocol?

Windows firewall

  1. Open the Windows Firewall with Advanced Security and click on ‘Inboud Rules’ > ‘New Rule’.
  2. Select ‘port’ and click on ‘Next’.
  3. Select the ‘UDP’ option and enter port number 1900.
  4. Select ‘Block the connection’ and click on ‘Next’.