Fixing 'SMB Signing Disabled or SMB Signing Not Required' vulnerability.
If your organization is using a vulnerability scanning tool then more often than not, vulnerability like SMB Signing Disabled or SMB Signing Not Required will flag up and probably make it to the top of the list. This is because most organizations may not have SMB signing enabled by default for all their client and server communications. What is SMB signing? SMB signing is a security mechanism in the SMB protocol which is designed to help improve the security of the SMB protocol. SMB signing adds security to a network using NetBIOS, avoiding man-in-the-middle attacks and w hen enabled on both the client and server, SMB sessions are authenticated between the machines on the packet level. According to Microsoft , following SMB configuration scenarios can play out - If SMB Signing is enabled and required at both the client and the server, or if SMB signing is disabled at both the client and the server, the connection is successful. If SMB signing is enabl...