How to provide Internet access to the TECSAR video recorder with a laptop with Internet from 3G-USB?

Question

CCTV

Tell me, please, how to connect DVR Tecsar AHD 4OUT to the Internet with a laptop and a 3G USB modem inserted into the USB port of this laptop and distributing Internet to the laptop?

Without a router. It is necessary that the laptop act as a router distributing 3G Internet to a LAN cable that will directly connect the DVR and laptop.

Answer 1

Static IP on the map and doors.
Laptop 192.168.137.1
Dvr ...2
On the dvr default gateway 192.168.137.1
In the properties of the whistle, the Internet through this connection is available to everyone in LAN. I don't remember exactly what it's called in different versions.