I am new to ISA 2004 Standard Edition just having installed it yesterday. I installed it on Windows 2003 Small Business Server (standard edition) with SP1 on ISA 2004. I was able to setup my internal interface (10.0.0.0 network)to allow all my clients in that range to browse the internet. However, the clients on the inside are not able to use VoIP or gaming applications. The apps return the message "unable to resolve DNS" or "unable to connect". I understand when I setup the 10.0.0.0 network I only allowed HTTP traffic through, but I can not seen to find where I can open up all ports/protocols for use on the inside network.
Also, on the ISA server itself, it only allows me to browse to certain websites (mostly MS sites) but I can resolve www.yahoo.com or www.rogers.com in command prompt, even thought I cant surf to those sites. My ISA server is the second firewall on my network, I have a hardware firewall infront of it, so browsing on the ISA server shouldnt be an issue.
If you need more info please ask. Thanks for you help.
The only ISA installation that I know of that works with SBS(on the same box) is the one that comes with the premium edition.
If the ISA that you installed did not come as part of the premium edition I would do one of two things - either install ISA on a separate box or purchase the upgrade to the std edition and get the premium disks that go with SBS.
I have many installations of SBS2K3 premium edition with ISA installed and do not have any issues. I also have one installation with SBS2K3 std edition with ISA 2K4 on a separate box and it works wonderfully.
I am using SBS std edition and ISA seems to work well on it (for http traffic going to clients at least). So I am not usre why I cannot connect using VoIP and gaming apps from the clients. Seems like a simple matter of opening TCP/UDP ports or allowing protocols in ISA.
As for not being able to browse to all webpages on the SBS ISA2K4 server, that I can live without, but it makes me curious why I cannot surf to all webpages. I have tried messing around with the Trusted Sites in Internet security within IE but it doesnt help.
When I try to browse to yahoo.com it says Page cannot be displayed. Error Code 403 Forbidden. The ISA server denied the URL.
Its like the ISA server is keeping itself from browsing the web to non microsoft sites.
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