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A quick look at the 7G Firewall

Published on 17th October 2021 Estimated Reading Time: 1 minute

There is a simple principal with the 7G Firewall from Perishable press: it is a set of mod_rewrite rules for the Apache web server that can be added to a .htaccess file, and there also is a version for the Nginx web server as well. These check query strings, request Uniform Resource Identifiers (URI's), user agents, remote hosts, HTTP referrers and request methods for any anomalies and blocks those that appear dubious.

Unfortunately, I found that the rules heavily slowed down a website with which I tried them, so I am going to have to wait until that is moved to a faster system before I really can give them a go. This can be a problem with security tools, as I also found with adding a modsec jail to a Fail2Ban instance. As it happens, both sets of observations were made using the GTMetrix tool, making it appear that there is a trade-off between security and speed that needs to be assessed before adding anything to block unwanted web visitors.

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