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DNS OWA and INTERNET ACCESS in ISA 2004

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DNS OWA and INTERNET ACCESS in ISA 2004 - 21.May2006 7:24:08 AM   
badwal

 

Posts: 1
Joined: 21.May2006
Status: offline
Hi,

I am new to ISA and using Microsoft Solutions for Small & Medium Business documentation for installing ISA server. I have install ISA 2004 SP2. I have   successfully published OWA but Internet access is the problem. I am not able to access INTERNET from user's PC and not even from ISA server itself.

1) Actually problem is When I use External DNS on either of the nics OWA stop working but Internet is working fine for users (ISA still not able to access). If is remove External DNS from nics OWA works fine but Internet stop working. I am using Firewall client for users PC and they recognize server and connected successfully.

I am using 2 nics internal and external. Internal inc has internal DNS servers and External has no DNS setting. We are not using any external DNS in the Domain.

2) A small question what should I configure so i can ping ISA from internally not externally.

I am not sure if I am in right forum for above 2 issues. Please advice and help.

Regards

Sbadwal 

< Message edited by badwal -- 22.May2006 12:12:16 AM >
Post #: 1
RE: DNS OWA and INTERNET ACCESS in ISA 2004 - 25.May2006 3:49:51 PM   
tshinder

 

Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi Badwal,

1) Actually problem is When I use External DNS on either of the nics OWA stop working but Internet is working fine for users (ISA still not able to access). If is remove External DNS from nics OWA works fine but Internet stop working. I am using Firewall client for users PC and they recognize server and connected successfully.

I am using 2 nics internal and external. Internal inc has internal DNS servers and External has no DNS setting. We are not using any external DNS in the Domain.
TOM: NEVER, EVER enter an external DNS server on any of the ISA firewall's NICs. If the Small biz solutions docs said to do so, then they are completely wrong. I haven't reviewed that information so I cannot vouch for it accuracy.

2) A small question what should I configure so i can ping ISA from internally not externally.
TOM: Configure the Ping System Policy rule to enable pings from Internal clients, but disable it quickly so that you don't get DoS'd
HTH,
Tom

_____________________________

Thomas W Shinder, M.D.

(in reply to badwal)
Post #: 2

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