Why is vpn connection data used for authorization in the domain network?

Question

VPN

Good afternoon. At work I use a computer on Win10 1909. The computer of the establishments is in the domain.
There is a need to connect via vpn (pptp, l2tp ipsec) to your home computer. After connecting, the working computer starts trying to use the vpn connection account (the data is not saved, I constantly enter them) for authorization on computers and servers in the domain. Why is this happening and is there any way to fix this problem?

Answer 1

After raising the VPN, make sure that your PC uses the company's DNS.

Answer 2

Definitely not GPG. Is there any data on the structure and size before encryption?

Answer 3

The only thing that is clearly visible is that the first 2 bytes (4 hex characters) is a number (little-endian) equal to the length of the message.

Answer 4

and there is a beginning of the establishment of a communication session? usually the most interesting