We are using Forefront UAG 2010, version 4.0.320.10100. I have published a portal (https://webconnect.hbcs.org) that some of my external users can connect to and others cannot. The ones that can connect are having no issues. The ones that cannot connect are getting: Page cannot be displayed. I am running out of ideas as to why this is happening.
Here are some items we have tried investigating with no luck:
1. external user computers and security settings, anti-virus, trusted sites, etc.
2. trace route information is the same across all working/non-working external user computers
3. different OS version such as windows xp, windows 7
Could there be anything inside UAG configuration that would allow a certain external IP address and not others?