What is NTLM relay?
NTLM relay attacks allow attackers to steal hashed versions of user passwords, and relay clients' credentials in an attempt to authenticate to servers.
What is SMB relay attack?
SMB Relay Attack is a type of attack which relies on NTLM Version 2 authentication that is normally used in most companies. Unfortunately, when we are listening to what is going on in the network, we're able to capture a certain part of the traffic related to the authentication and also relay it to the other servers.