How to send traffic from different subnets to different proxy ports?

Question

Squid

Good afternoon!
The essence of the question is this: there is a proxy on which squid and dansguardian are installed, now all traffic goes to dansguardian port 8081 and then is redirected to squid port 8080, but with this scheme, content is filtered for everyone, and it is necessary to filter content only from some pools of addresses (in training classes) and allow all other traffic to bypass the content filter.
Tell me how to organize it?

Answer 1

This is done using source routing ( policy routing ).