Request For Information... It appears that lately I seem to be finding all the things that ISA cannot do. Is ISA supposed to be an "Enterprise" level application that can truly support Enterprise level needs? Or am I simply just asking too much of ISA. I am asking this sincerely. I have used MS Proxy and ISA for several years now. Frankly, I have not really looked at other products. But now that our business has grown, so has the complexity of our network. I keep running into issues where ISA is a roadblock and not a asset. Are the problems with authentication, not passing protocols (even when defined), VOIP, etc ISA centric, or am I going to have these same issues with any firewall product we purchase? In our mixed environment of Windows, Mac, Linux, and Solaris, is ISA really a good fit? Will there be a release of ISA that will address these issues in the immediate future? Thanks to all with more insight into this than I have.