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problem accessing devices by IP using auto detect - 24.Apr.2008 11:40:09 AM

ruso

Posts: 4
Joined: 24.Apr.2008
Status: offline

2006 SE server running on W2k3 SP2 single nic template

1. accessing a website on a different subnet by IP fails using autodetect
2. using a static proxy when accessing by IP it works
3. accessing the device by DNS works using auto detect
4. accessing website by IP on same subnet as ISA works
5. on the addresses tab for internal properties I have listed
0.0.0.1 - 126.255.255.255 and 128.0.0.0-255.255.255.254
6. on web browser tab I have bypass bypass prody for webservers on this network, directly access computers specifided in the domains tab (my domains tab is blank) and directly access computers specified in the addresses tab selected.
7. we use DHCP to push WPAD information.

Where else do I look? We're moving from our 2004 ISA server and we never had this issue on that system. Thanks

Post #: 1

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RE: problem accessing devices by IP using auto detect - 7.Jul.2008 3:49:36 PM

bvanutrecht

Posts: 3
Joined: 7.Jul.2008
Status: offline

Hi,

I am facing the same issue.. Did you found a solution yet?
I really appreciate if you can share it with me

Thanks

Bastiaan van Utrecht

(in reply to ruso)

Post #: 2

RE: problem accessing devices by IP using auto detect - 7.Jul.2008 3:54:27 PM

ruso

Posts: 4
Joined: 24.Apr.2008
Status: offline

Hey there...the problem turned out to be caused by Websense. If that happens to be your issue it's likely related to blocking advertisements and it's a real PITA to have that category blocked.

Ruso

(in reply to bvanutrecht)

Post #: 3

RE: problem accessing devices by IP using auto detect - 7.Jul.2008 4:10:45 PM

bvanutrecht

Posts: 3
Joined: 7.Jul.2008
Status: offline

Hi..

No websense is use...

For accessing websites without domain names (so accessing on IP address) , IE tries to directly connect to the webserver without using the ISA/Proxy server. As clients do not have directly access to internet, this causes some troubels.

If I turnoff the automatic detection and use a static proxy, then all traffic is routed trough the proxy.

Any idea?

(in reply to ruso)

Post #: 4

RE: problem accessing devices by IP using auto detect - 8.Jul.2008 10:48:46 AM

ruso

Posts: 4
Joined: 24.Apr.2008
Status: offline

Well, my guess would be that it has something to do with the following...under Config, networks, internal what do you have listed for addresses...best practices should be 0.0.0.1 - 126.255.255.255 and then 128.0.0.0 - 255.255.255.254. What do you have listed under the web browser tab? I guess the chances are that the problem lies somewhere within the internal network config.

Ruso

(in reply to bvanutrecht)

Post #: 5

RE: problem accessing devices by IP using auto detect - 9.Jul.2008 2:37:56 AM

bvanutrecht

Posts: 3
Joined: 7.Jul.2008
Status: offline

Hi,

I had some wierd IP ranges configured

0.0.0.1 - 126.255.255..255 and 128.0.0.0- 255.255.255.254

After removing these an restarting th ISA server , the issue was solved. Still unclear why these ranges are set in a default installation.

Thanks,

Bastiaan

(in reply to ruso)

Post #: 6