How to stop HTTP Vulnerability Scan Attempts. How to Prevent Microsoft IIS vulnerability scans.
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How to reduce website vulnerability scan attempts

If you are running Web Server Software like Microsoft IIS on your Windows server you may find increasing numer of 404 (Page Not Found) errors in your website analytics.

Accessed resources may be completely irrelevant to your website, like PHP pages when your website is on ASP.NET, or attempts to retrieve Linux specific file system entries when your server is on Windows, or attempts to find pages that belongs to popular CMS like WordPress or Drupal.

In most cases these requests are generated by automated tools that bombard web sites with a ton of different URLs in attempt to find old systems that are not updated to exploit known vulnerabilities.

Below are examples of such attempts:

Credentials scan for AWS and Node.js

Example of AWS and Node.js credentials scan

Generic website vulnerability scan

Generic website vulnerability scan example

Of course you should not use outdated web servers or 3-rd party CMS in the first place. And your web server should not host anything that you don't want to be public, like AWS secrets or website backups with source code.

But these scan attempts are not just annoying, they waste your server resources like processor time, memory, bandwidth and disk space.

With RdpGuard you may significantly reduce the number of vulnerability scan attempts by detecting dangerous patterns and temporarily blocking source IP addresses.

It monitors web server logs of your choice and detects dangerous scan patterns. If the number of scan attempts from a single IP address reaches a set limit, the attacker's IP address is blocked.

For Windows Vista/7/8/8.1/10/11 and Windows Server 2008/2012/2016/2019/2022

See Also

How to enable and configure HTTP Protection

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