I have the following setup
Workstation <----> ISA Server <----> VPN tunnel <-----> Sonicwall <------> Webserver
From the 'Workstation' I am trying to open a webpage which is running on the 'Webserver' vi HTTP and the page does not open. I can ping and telnet to port 80 on the workstation to the webserver. If I am in the same LAN as the webserver I can open the page without a problem from any machine but as soon the traffic flows through the ISA server I see an error page saying that Web proxy was not able to reach the host which is of course nonsens because there is other traffic flowing through the tunnel as well. I do not want the ISAServer to do any chaching or anything - I want the ISA server to direclty forward the traffic to the webserver and that is it.
Can someone please help and let me know what I need to change on the ISA server to get that to work?
Please see below the error message:
Failed Connection Attempt ISASERVER 3/5/2010 3:51:51 PM
Log type: Web Proxy (Forward)
Status: 10065 A socket operation was attempted to an unreachable host.
Rule: Internal -> VPN tunnel
Source: Internal (192.168.10.144)
Destination: Concretio (192.168.2.10:80)
Request: GET http://192.168.2.10/
Filter information: Req ID: 0b796958; Compression: client=No, server=No, compress rate=0% decompress rate=0%
Client agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; FDM; .NET CLR 3.5.21022; InfoPath.2; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Object source: Internet (Source is the Internet. Object was added to the cache.)
Cache info: 0x0
Processing time: 62921 ms