Use MacBook as VPN server or outbound proxy

Question

I'm not sure whether the question's title describes what I'm trying to achieve...

Anyway, it is coronavirus outbreak, and I'm grounded at home. My employer has very strict security/hardware polices that allow only company-approved laptops (MacBooks) to connect to the most of company resources. On top of that we can connect only through VPN. At home I have pretty powerful linux machine that is collecting dust, while it can save hours of compile time/time to spin up docker containers, etc...

I have full admin access both to my Mac, Linux machine and home router, so I got the idea that I can use Mac as VPN or proxy server to connect to corporate network from my Linux machine:

Linux workstation ---- (VPN or Proxy config + some router network magic) ---> MacBook --- VPN ----> Corporate Network

Does it sound like a feasible solution?

Bonus question:

I do lots work through terminal, so it'd be nice if this setup will make it work seamless as well (i.e. can I just copy my SSH private/public keys from Mac to Linux machine or proxy SSH/CMD things as well)?

In case it matters for answer: Router: Netgear c3700 Mac OS version: Catalina 10.15.4 Linux machine OS: Ubuntu 20.04

Answer 1

It seems that "borrowing" mac address from the work laptop will be the easiest solution.

To lookup mac address on MacBook the following command can be used:

$ ifconfig
...
en0: flags=...
        ...
        ether xx:xx:xx:xx:xx:xx

Or via GUI: System Preferences -> Network -> WiFi -> Advanced (button) -> Hardware (tab) -> Mac Address

To set the address on the Linux machine the following command should make the trick:

macchanger -m xx:xx:xx:xx:xx:xx eth0

Installation instructions, just in case you don't have macchanger installed:

sudo apt-get update -y
sudo apt-get install -y macchanger

There are probably some ethical concerns with workarounding rules set by company's security team... I feel like asking them to allow-list your workstation would be a better solution ¯\_(ツ)_/¯.