Squid with more than 128 ports?

Hello everyone,

We have a few Squid proxy servers with a total of around 400 different incoming ports, that we have been connecting to directly so far before going out to the internet. We have decided that we want to add a cloud instance in the middle, that will authenticate users and only then forward them to the squid instance.

I was thinking of using Squid for that as well, but we have to use over 400 ports, and I know Squid has a limit of 128. I also know that it is possible to build Squid in a way to will enable more ports than 128, but this comes with a performance hit.

What would be the best solution for a cloud-based forward proxy server that can be transparent, easily manage user and whitelisted IPs, have rich logs, and can support any number of ports?

Thanks.