We have a Cisco ASA 5520 running IOS 8.2(1), which is set up for clientless VPN (WebVPN) for external access to a few Sharepoint sites. We were using Sharepoint 2007 previously, and we didn't have any issues. Now that we have upgraded our Sharepoint infrastructure to 2010, the sites won't load through clientless SSL VPN. When I click on the link in the Bookmarks for SSL VPN, all I get is 'Page Could Not Be Displayed". The Sharepoint 2010 sites work fine inside, and externally when connected with the AnyConnect client. The Sharepoint 2007 sites still load through clientless VPN, as do any of the other websites we host internally, except for Sharepoint 2010. I do not get any notifications via the syslog when the Sharepoint site doesn't load.
Anyone run into this problem and find a solution? Cisco.com lists some incompatibilities with Sharepoint 2010, so perhaps this just doesn't work at all at current time? Would like to know for sure though. Thanks in advance for any assistance.