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Problem with isaserver and dns

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Problem with isaserver and dns - 24.Sep.2012 10:23:08 AM   
frax

 

Posts: 5
Joined: 24.Sep.2012
Status: offline
Hello,
I use isaserver from few years and I've never understood the strange behavior with the dns, i try to explain:
isa have 2 NIC one internal and one external:

ISA NIC INTERNAL
IP:192.168.0.5
MASk:255.255.255.0
GW:empty
DNS1:192.168.0.6
DNS2:192.168.0.7

ISA NIC EXTERNAL
IP:public ip
MASK:255.255.255.248
GW: my gw
DNS: empty

DC1 NIC
IP:192.168.0.6
MASK:255.255.255.0
GW:192.168.0.8
DNS1:DC1
DNS2:DC2

DC2 NIC
IP:192.168.0.7
MASK:255.255.255.0
GW:192.168.0.9
DNS1:DC2
DNS2:DC1

When i set in the dc such gateway the IP of the ISASERVER, the latter is not pingable from another machine and i can't navigate on internet,
instead when i insert in the dc 2 different gateway ISASERVER work well.
Another situation is when a dc go down, isaserver have some problems to switch to the secondary dns, why i have this problems?
Is normal?
All is inside of the domain, but the domain work well.

Thanks
Franco
Post #: 1
RE: Problem with isaserver and dns - 24.Sep.2012 10:58:54 AM   
suvankarm

 

Posts: 1
Joined: 18.Sep.2012
Status: offline
Thanks for your reply, in my case i am using both exchange and groupwise 8. exchange webaccess service runing perfectly but for groupwise i am unable to create/configure.

regards

(in reply to frax)
Post #: 2
RE: Problem with isaserver and dns - 24.Sep.2012 11:13:57 AM   
frax

 

Posts: 5
Joined: 24.Sep.2012
Status: offline
What does that have to do with my problem?


Franco

(in reply to suvankarm)
Post #: 3
RE: Problem with isaserver and dns - 24.Sep.2012 12:52:54 PM   
spouseele

 

Posts: 12830
Joined: 1.Jun.2001
From: Belgium
Status: offline
In a single subnet scenario the default gateway on the DC's should be the ISA internal interface (in your case 192.168.0.5).

HTH,
Stefaan

(in reply to frax)
Post #: 4
RE: Problem with isaserver and dns - 25.Sep.2012 2:14:02 AM   
frax

 

Posts: 5
Joined: 24.Sep.2012
Status: offline
Hello,
sorry i have forget, i have also the DMZ interface
ISA DMZ:192.168.200.0
MASK:255.255.255.0

Regards

(in reply to spouseele)
Post #: 5
RE: Problem with isaserver and dns - 25.Sep.2012 4:51:14 PM   
spouseele

 

Posts: 12830
Joined: 1.Jun.2001
From: Belgium
Status: offline
Should the ISA DMZ interface not be 192.168.200.1 ?
The default gateway for the hosts belonging to the DMZ should be the ISA DMZ interface (in your case 192.168.200.1).

What network relationships have you defined?

HTH,
Stefaan

(in reply to frax)
Post #: 6

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