I've taken over a project for a client who is behind a firewall, and they continue to see old versions of pages that I have updated on the hosting service. When I navigate to the pages, I see the updated versions.
I think that the client must be connecting through a proxy that is holding old versions of the pages.
Will the techniques that cause browsers to NOT cache pages work for the proxies as well? If there are methods that are specific to proxies, could someone let me know about them?