We have web filter software running on a Red Hat 8 server. For the filtering to work, we have to go into IE and Firefox on each machine and change the settings to use a proxy server address. However, if the user knows how to change it back to "auto", they bypass the filter. What I want to do is have all users go through the filter then turn off Internet access unless they go through the proxy first. Is there a way to "broadcast" the proxy address and port from the Linux server without having to go to each person's machine? Currently, we are going to each machine and specifiying the proxy and port in LAN settings. It seems like this would not allow them to surf outside of our network. I.e., if they took their laptop home. Plus, it is time consuming to go to each machine and change these settings.