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502 Proxy Error - 26.Apr.2008 10:29:29 PM

Posts: 5
Joined: 29.Jan.2008
Status: offline

Good Evening,

I installed ISA 2006 Server on my network, all works very well for internet
but I have a problem with all my intranet website :

When I try to access any of my intranet website from any computer in my LAN network, I have the following error : Error Code: 502 Proxy Error. The host
server is unreachable. (10065)

If I try to access this website from outside of my LAN network, there
is no problems.

Is someone already have this problem, and have the solution ?

thanks a lot

***My configuration is Windows 2003 R2, ISA 2006 EE, Single Network***

Post #: 1

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RE: 502 Proxy Error - 27.Apr.2008 9:36:13 AM

tshinder

Posts: 47659
Joined: 10.Jan.2001
From: Texas
Status: offline

What is the IP addressing information on the ISA Firewall's internal and external interfaces?

Thanks!
Tom

_____________________________

Thomas W Shinder, M.D.
Sr. Consultant/Technical Writer
Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/

GET THE NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8

(in reply to z1)

Post #: 2

RE: 502 Proxy Error - 27.Apr.2008 3:05:54 PM

Posts: 5
Joined: 29.Jan.2008
Status: offline

Well, sorry maybe I should details more my configuration.

I want to use my ISA Server 2006 only as Web Proxy, as I have only one Single Network so I know there is no notion of External Network, I have a Firewall Access Rule that allow HTTP, HTTPS, FTP From Internal to Internal, for users member of one of my Active Directory Group.

The Internal Network address, is set 0.0.0.1 to 126.255.255.255, 128.0.0.0 to 223.255.255.255, 240.0.0.0 to 255.255.255.254 and The web chaining is set to redirecting them to a upstream server.

My clients use Internet Explorer, with the proxyname 8080 in the LAN settings, we don't use automatic configuration script. I know that I can use a bypass proxy in the LAN Settings but if it's possible (It was with ISA 2000) I prefer to define this kind of rule inside ISA, for exemple I know that All my Web servers are located in the IP network 49.0.0.0 to 49.255.255.255.

Thanks!

(in reply to tshinder)

Post #: 3

RE: 502 Proxy Error - 29.Apr.2008 6:30:58 PM

tshinder

Posts: 47659
Joined: 10.Jan.2001
From: Texas
Status: offline

Hi Z,

In order to Direct Access your Web Servers, you need to configure them in the Direct Access configuration of the default Internal Network. Then configure the clients to use the Autoconfiguration script, or use autodiscovery through WPAD.

HTH,
Tom

_____________________________

Thomas W Shinder, M.D.
Sr. Consultant/Technical Writer
Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/

GET THE NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8

(in reply to z1)

Post #: 4