FIGURE 2: NT Challenge / Response Authentication and Encryption 3/16/98 10:21:35 PM : >> AUTH NTLM TlRMTVNTUAABAAAAs5IAAAsACwAgAAAAAAAAAAAAAABTVFJFQU1XT1JLUw AAAAAAAAAAAAA= 3/16/98 10:21:35 PM : <<< IO: |334 TlRMTVNTUAACAAAAAAAAACgAAACxggAAJEVkcRfejpUAAAAAAAAAAA== | 3/16/98 10:21:35 PM : <<< 334 TlRMTVNTUAACAAAAAAAAACgAAACxggAAJEVkcRfejpUAAAAAAAAAAA== 3/16/98 10:21:35 PM : >>> TlRMTVNTUAADAAAAGAAYAG4AAAAYABgAhgAAABIAEgBAAAAACAAIAFIAAAAUABQAWg AAAAAAAACeAAAAsYIAAHMAYwBoAHcAYQByAHQAegBzAHQAZQBzAHQAUwBUAFIARQBBAE0AVwBSAEsAUwAds8U7ucRTwFb7RPJVAjW1QcinAKMnKUWlsY+3XZC3YrDgXgHrFAiK6HNTMHpr0bU= 3/16/98 10:21:35 PM : <<< IO: |235 ntlm authentication successful | 3/16/98 10:21:35 PM : <<< 235 ntlm authentication successful 3/16/98 10:21:35 PM : >>> MAIL FROM: SIZE=948 RET=FULL 3/16/98 10:21:36 PM : <<< IO: |250 OK - mail from ; can accommodate 948 bytes