description-logo Description

This indicates an attempt to use the SMB v2 protocol.
Microsoft Server Message Block (SMB) protocol is a network file sharing and printer sharing protocol available on multiple Operating Systems. The signature identifies SMB version 2.0 and 2.1.

affected-products-logoAffected Products

SMB version 2.0 and 2.1

Impact logoImpact

Network bandwidth consumption

Technology

Browser-Based, Network-Protocol, Client-Server, Peer-to-Peer, Cloud-Based, Mobile-Device

Behavior

  • Reasonable

Application Dependencies

Default Ports

  • TCP/137
  • TCP/139
  • TCP/445