Clarification of "Unique IP" given public IP and non-routable IPs

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John Smythe
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How are Unique IP addresses determined? For example, if there are 3 workstations in a single location that utilize DHCP, so that all "share" the same public IP but each obviously has its own non-routable IP address, would that count as 3 unique visitors logged (and reported) if all 3 visited the same URL at the same time?

Thanks.
visitors unique ip visitor tracking
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Michael
If these three workstations access an external server, their public IP will be logged for all their requests. In this case one unique IP only will be counted (number of unique IPs just included number of different IP addresses).

Number of visitors counted depends on time between requests. The program determines number of visitors by the IP addresses. If a request from an IP address came after some time (timeout) since the last request from this IP, it is considered to belong to a different visitor. The timeout is set to 30 minutes by default but you can change this value in Options > Analysis > General.

So if all the workstations accessed page on the site at the same time, they will be counted as one visitor.
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Felipe Carrero Casarrubios
So, regarding to this behavior the number of real visitors in an intranet/corporative environment, using a proxy, will never be real.

Imagine a corporative organization where the user access to an intranet using their office connections, the most logical infraestructure design will use a proxy or firewall for user to connect, so , in the web servers will be registered a bunch of IP from the proxy/firewall. The timeout settings will not reflect the number of real visitors in the web site.
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Michael
Quote from Felipe Carrero Casarrubios
So, regarding to this behavior the number of real visitors in an intranet/corporative environment, using a proxy, will never be real.

Imagine a corporative organization where the user access to an intranet using their office connections, the most logical infraestructure design will use a proxy or firewall for user to connect, so , in the web servers will be registered a bunch of IP from the proxy/firewall. The timeout settings will not reflect the number of real visitors in the web site.
If a lot of visitors from the same corporate network access an external site using the same IP, the program won't be able to report an accurate number of visitors from this network. However, if analysis is performed for an intranet site, it is possible in many cases to configure logging at the web server such way that it will include real visitor IPs using data from the firewall/proxy.