TCP-based services are harder to use for amplification than UDP (like NTP or DNS), but if an attacker spoofs their IP and sends queries to many open WSD ports, the responses (which can be large due to verbose XML) are sent to the victim. While less effective than UDP floods, it is a potential abuse vector.
5357/tcp open wsdapi
If the host does not need to advertise itself (e.g., a dedicated database server or web server), you can disable the service entirely. 5357/tcp open wsdapi
On the Windows machine itself, ensure the "Network Discovery" rules are scoped correctly. TCP-based services are harder to use for amplification
: In a compromised internal network, attackers use discovery protocols to map out the network and find high-value targets. On the Windows machine itself, ensure the "Network
WSD is a Microsoft implementation of the standard. It allows network-connected devices to "advertise" their presence to Windows clients and vice versa.
WSDAPI, short for Web Services for Devices Application Programming Interface, is a protocol used for discovering and communicating with devices on a network. It's a part of the Web Services for Devices (WSD) standard, which enables devices to advertise their capabilities and services over a network. WSDAPI is commonly used in Windows environments, particularly in Windows Vista and later versions.