What should I do to play Legacy StarCraft with my brother on my own computers over LAN?

What should I do to play Legacy StarCraft with my brother on my own computers over LAN? - Black little child fooling around brother using laptop on bed

This question is a follow-up question of Do I need two licenses to play StarCraft 2 multiplayer over a LAN?.

Constraints

  1. My internet connection is unstable for online game so I have to play a LAN game. I choose Legacy StarCraft rather than StarCraft 2 because I think the former provides playing over LAN.

  2. I want to play with my brother using my 2 computers, one for me and the other one for my brother. My computers have Windows 7 installed.

Questions:

  1. Is it allowed to purchase and download a single Legacy StarCraft installer from my Battle.net account and install it on both of my computers mentioned above?

  2. If it is not allowed because of licensing issue, should I just purchase 2 licenses from my Battle.net account but just download the installer once? Downloading the installer twice seems to be inefficient, does not it?

  3. Or do we need to have a separate Battle.net account each and just buy and download the installer separately via each Battle.net account?






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What should I do to play Legacy StarCraft with my brother on my own computers over LAN? - Two Kids Covering Their Faces With a Cutout Animal Mask
What should I do to play Legacy StarCraft with my brother on my own computers over LAN? - Two Boys Beside Adult Black and White Border Collie
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Can you play StarCraft 2 on LAN?

Yes, you can.



StarCraft: Remastered - Friendly Matches With w/ My Brother.




Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Ketut Subiyanto, Artem Podrez, Kat Smith, Allan Mas