[squid-users] One squid box, multiple proxies - suggestions?

I've seen similar questions to mine in the archives with no answers.
I'm open to any reasonable suggestions.

We have several different proxying firewalls coming out of our private
internet to the public Internet. I'd like to use squid to (a) change
or remove some of the header information that's gratuitously [;-)]
entered by some browser paths, and (b) to direct which proxying
firewall I want to use. I believe I have read that squid can do (a).
I had thought that squid could do (b). The considerations for the
latter are:

        - some users will be coming from anywhere [corporate network,
          dial-in, other VPNs], but will want to select one particular
          firewall that does things they way they like it, and we need
          to accommodate those customers
        - some users' organizations have stated a preference for
          certain firewalls, and so we need to accommodate those
          customers
        - some URLs' hosts are "closest" on the public Internet to one
          or another firewall, and so we'd like to use that firewall
          for those hosts, in the absence of a clearly stated request
        - some firewalls are equivalent, and in the absence of any
          other consideration, we'd like to pass queries around.

Is Squid the right tool for the job? If so, how? If not, what is?

Thanks!

-- 
Joe Yao				jsdy@center.osis.gov - Joseph S. D. Yao
OSIS Center Systems Support					EMT-B
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