It's an Amazon term. You can have IP addresses that are allocated to you that you can move around between instances as needed. Good for failover if needed.<br><br>I can hold onto the address for as long as I needed it, and I have updated my DNS zones to include that address.<br>
<br>Jason<br><br><div class="gmail_quote">On Mon, Feb 7, 2011 at 1:44 PM, Travis Sidelinger <span dir="ltr"><<a href="mailto:travissidelinger@gmail.com">travissidelinger@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
I've heard of static and dynamic, but what is an "Elastic IP"?<br>
<br>
<br>
On Mon, Feb 7, 2011 at 1:04 PM, Jason Marshall <<a href="mailto:jason.marshall@gmail.com">jason.marshall@gmail.com</a>> wrote:<br>
> Travis,<br>
><br>
> I would beg to differ on a couple of points below. This weekend I finished<br>
> configuring a mail server out on Amazon EC2, and I have an Elastic IP<br>
> assigned to it with Reverse DNS. I think the reverse DNS is a relatively<br>
> recent feature addition, however.<br>
><br>
> Jason<br>
><br>
> On Mon, Feb 7, 2011 at 12:31 PM, Travis Sidelinger<br>
> <<a href="mailto:travissidelinger@gmail.com">travissidelinger@gmail.com</a>> wrote:<br>
>><br>
>> Anyone,<br>
>><br>
>> Any colug'ers have experience with maintaining security with cloud<br>
>> services? We firewall everything inbound and outbound for our DMZ<br>
>> systems, but, this has been getting increasingly difficult with cloud<br>
>> services that like to change their IP address often. An example is<br>
>> Amazon's cloud. They are not using static IP addresses and you can't<br>
>> use reverse DNS lookups to validate their service. A firewall rule<br>
>> can be good for about a day before it changes. We are planning to<br>
>> upgrade our firewall to a Cisco product, which I'm hoping has a<br>
>> feature that can check URL's. If that doesn't work, I may need to<br>
>> build a special proxy service for these that can provide URL based<br>
>> ACLs.<br>
>><br>
>> ~Travis Sidelinger<br>
>><br>
>> --<br>
>> "A careful reading of history clearly demonstrates ...<br>
>> that people don't read history carefully.”<br>
>><br>
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><br>
><br>
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