Yeah, you can do it in ISA. I have some zipped block lists at 
www.isaserver.bm<http://www.isaserver.bm>

S

From: Tim Evans [mailto:[EMAIL PROTECTED]
Sent: Monday, March 17, 2008 8:40 PM
To: NT System Admin Issues
Subject: DNS Wildcard zones for malware protection

I've been looking at www.malwaredomains.com<http://www.malwaredomains.com> and 
thinking about setting up a block list using their list of malicious domains. 
I'm thinking about doing this by setting up a wildcard zone for each domain on 
our DNS server. Right now, the list has almost 20,000 domains.  We're running 
Windows 2003 domain & forest functional mode, with AD integrated zones. Our DNS 
servers are for internal use only and are not publicly accessible. Here is the 
batch file I'm planning to use:

wget http://www.malwaredomains.com/files/domains.txt

for /F "eol=# tokens=1 " %%f in (domains.txt) do @echo %%f >>file.txt

for /F %%f in (file.txt) do dnscmd %server% /zoneadd %%f /DsPrimary /DP /forest

for /F %%f in (file.txt) do dnscmd %server% /recordadd %%f * A 127.0.0.1

Some questions:
-Is there a more efficient way to block these domains (we also have ISA 2006)?
-Is there a downside to having all that many domains on our DNS servers?
-any other words of wisdoms or warnings before I try this?

Thanks.

...Tim





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