web server inventory

what are the most common web server platforms, is it typically IIS and Apache?

And are there any free tools you can use to scan your network/AD domain to list all servers running 1 or more of the aforementioned web server platforms?
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Zephyr ICTCloud ArchitectCommented:
Apache is still the most used "developer" for running web sites/applications, with NGINX gaining more ground against Microsoft (IIS).

As for a tool, I don't know one of the top of my head, but you could script using something like curl, for example:

curl -s -I domain.com|grep Server

Open in new window

If you want to check just the one public site you can also use something like this Netcraft page.

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Typically a webserver be it Apache or be it IIS will listen on port 80, so basically you'd want to do a network scan that is able to detect http and https (outside of their regular ports tcp-80 and tcp-443 as well).

Here's a free network scanner: http://www.advanced-ip-scanner.com/

Do note that this may trigger firewalls and intrusion detection systems if in place; be sure to avoid scanning those ips and avoid going outside of the subnet to prevent the scan from going through firewalls/intrusion detection systems.
Dave BaldwinFixer of ProblemsCommented:
Apache and Nginx are used more on the public internet but IIS may predominate inside a Microsoft Locan network.

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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
Apache, Nginx and IIS are the most common web servers and as mentioned above, Apache and Nginx are the most common web servers on the Internet as the hosts are running Linux.  If you are a Microsoft shop then stick with IIS.  For your inventory, I recommend you download Microsoft MAP as it is free and you could scan your complete domain and generate reports.  MAP can be found at:

pma111Author Commented:
MAPT cant find apache web servers though, it is purely picking up IIS
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
You could use Nessus and scan your IP range for TCP ports 80 and 443 assuming you are using standard TCP ports for your websites or you could do the default scan which will try to identify OS version, open ports and try to identify the engine behind the web server.
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