ISA server 2006 problem

[Marek Zaremba]

Hi,

please can anyone help me with issue with web proxy?

1. I have single NIC adapter ISA server 2006 SP1, which is connected to
switch and other servers are also connected to this switch. ISA shoud work
only as proxy server + monitoring to Internet access for users. In front of
the switch is HW Firewall. All users should goes to internet via ISA server
but if they want to go I have this error message :

Technical Information (for support personnel)
Error Code 12206: Proxy chain loop
Background: The gateway has detected a proxy chain loop. This condition
might indicate a configuration problem on a proxy server.

2. I have on ISA NOD antivirus and the NOD is not able to update
virus database, how I have to create new access rule for updating
the NOD database ?

Please help.
Thanks.

[Jens Baier]

Hi,

> Technical Information (for support personnel)
> Error Code 12206: Proxy chain loop
> Background: The gateway has detected a proxy chain loop. This condition
> might indicate a configuration problem on a proxy server.

http://www.google.de/#hl=de&source=hp&q=Error+Code+12206%3A+Proxy+chain+loop+&meta=&aq=f&aqi=&aql=&oq=&gs_rfai=&fp=bfa2bfa5f7d2cb48
Are you using web chaining? ISA is configured with Single network adapter
template? Are the IP address ranges OK? All IP address ranges must be
included in the network object Internal on ISA Server

> 2. I have on ISA NOD antivirus and the NOD is not able to update
> virus database, how I have to create new access rule for updating
> the NOD database ?

create a Firewall rule which allows HTTP/HTTPS from LOCALHOST to the NOD
Update Server

--
Gruss Jens
www.it-training-grote.de
www.forefront-tmg.de
https://mvp.support.microsoft.com/profile/Marc.Grote
http://blog.it-training-grote.de

[Marek Zaremba]

Hi Jens,

I have: one location [ PC, FW router + inet VPN tunnel to second FW
router in second location ]
second location [ FW router > switch ( to this switch
connected ISA 2006 1 NIC, Exchange 2007,
SQL 2005 ) ]
And ISA should only monitor and allow connection foe web browsing for and
users for their IE,
nothing else.

Firstly I don't know what is web chaining but in "Configuration > Networks >
Web chaining >
Default rule". There is this "Default rule" which ISA doesn't allow cancel it.

Yes, ISA is configured by Single NIC template, but I am using adress LAN
ranges: 192.168.194.0 in one location + 192.168.195.0 - 192.168.196.255 in
second location.
But network configuration from template made this
[Internal 0.0.0.1 - 126.255.255.255, 128.0.0.0 - 255.255.255.254]

I had created tomorrow one policy rule:
[ enable, from Local host+Internal to Internal , HTTP with out web proxy
] and
it shows me this error "Error Code: 502 Proxy Error"

Thanks for help.

R,
Marek

"Jens Baier" wrote:

> .
>