Question on ACL config.

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Oct 16th, 2008
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I have an ACL question. I'm trying to set up an acl that will restrict 1 computer to accessing ONLY a website such as On doing an nslookup or Whois for I find answers to these IP addresses.

However, browsing to does not necessarily connect to these IP addresses. It seems is using some load balancing feature where it ( could resolve to several different IP's hosted it seems by akamai.

What is the best way to establish this lock down? Machine should only get to, however, is not easily resolvable.



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Giuseppe Larosa Thu, 10/16/2008 - 12:16
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incognito_54 Thu, 10/16/2008 - 13:18
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Thanks for your quick response. I'll check out the url.


incognito_54 Fri, 10/17/2008 - 08:47
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I looked at the url and had a couple of follow up questions.

I'm wondering how the ip domain lookup would work in my scenario. If the user requests his computer will resolve the fqdn to whatever response the dns server hands back, which could be different each time the user visits

Even if i have enabled ip domain lookup and used the FQDN in the access list how would this help my situation? If the router does a lookup for, the router too may get a different IP address for than the user.

Does the question make sense?


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