Multiple gateways on PC. How to set up forwarding?

Question

Computer networks

I apologize for the previous wording. I have a Win7 computer. With two network interfaces. One is assigned an address of 172.16.122.15/16 with a default gateway of 172.16.99.1.
On the second, 192.168.1.130/24 with the default gateway 192.168.1.1. Gateway metrics are set to automatic. I need to use the gateway 172.16.99.1 when accessing the Internet from a browser. My teacher told me to set up firewall forwarding.

netsh interface portproxy add v4tov4 listenaddress=172.16.99.1 listenport=80 connectaddress=192.168.1.1 connectport=80

It did not help.

Answer 1

There can be exactly one default gateway within a separate routing table (you can configure it crookedly, but in fact only one will work), this is its meaning - the last hope for a packet that did not fit any of the rules.
What you want is at a higher OSI level - routes don't know anything about the ports and applications using them. There are many ways to solve this problem, but the goal is not very clear.

Answer 2

Install an http\socks proxy server that will "listen" on only one network interface you need and configure the browser to work through your local proxy server.
For example squid
https://wiki.squid-cache.org/SquidFaq/BinaryPackag...