As I mentioned earlier, the Apache HTTP Server has a small disadvantage compared to the competition (NGINX) in terms of performance. If you run websites that really have a lot of visitors, NGINX might be the better alternative.
On the other hand, the Apache HTTP Server is open source and free. Further functionalities can be activated via modules. The documentation is really excellent.
Imperva web application firewall does a great job in giving us control over access to our public web servers. With our regular hosting provider, we couldn't block access based on geography, or really anything. So we had to rely on traditional access controls to protect the data. But with the WAF, we can block countries such as North Korea, or we could stop any SQL Injection attempts, or even do a temporary block of IP in the case of detected brute-forcing.
Street Cred: Apache Web Server is the Founder for all of Apache Foundation's other projects. Without the Web Server, Apache Foundation would look very different. That being said, they have done a good job of maintaining the code base, and keeping a lot of what makes Apache so special
Stability: Apache is rock-solid. While no software is perfect, Apache can parse your web sources quickly and cleanly.
Flexibility: Need to startup your own Webpage? Done. Wordpress? Yup. REST Endpoint? Check. Honeypot? Absolutely.
Alert Aggregation - Correlates different violations into perceived correlated attacks.
Ease of deployment - as one of the only WAFs that allow bridge mode deployment, this can be deployed with without downtime and no Network Architecture modifications. If the need for proxy is required at a later time, Transparent Reverse Proxy can be deployed within seconds and minimal configuration.
Custom Policies - Custom security policies are easy to configure.
Reporting - There are a good amount of pre-configured reports available by default.
The default configurations which comes with Apache server needs to get optimized for performance and security with every new installation as these defaults are not recommended to push on the production environment directly.
Security options and advanced configurations are not easy to set up and require an additional level of expertise.
Admin frontend GUI could be improved to a great extent to match with other enterprise tools available to serve similar requirements.
There are just a couple of points that are hard to find, that probably could be elsewhere. But these are minor; everything else is right where you'd expect it to be.
I give this rating because there is so much Apache documentation and information on the web that you can literally do anything. This has to do with the fact that there is a huge Open Source community that is beyond mature and perhaps one of the most helpful to be found. The only thing that should hold anyone back from anything is that they can not read. RTFM, my friend. And I must say that the manual is excellent.
We haven't needed support from Imperva since implementation. But during that time, their personnel were very quick to respond to questions. Since then, it's been largely doing its thing for us (which is exactly what we'd hoped).
I has a lot more features, except that IIS is more integrated in a Windows environment. But now with .net core also possible from Apache it would work anywhere really. Only in a full Windows environment where full integration is needed I would chose to go for IIS. Otherwise Apache it is.
Ultimately, it was the easiest to work with that was still a "known" company (we've been burned too many times by up-and-comers). We needed something that gave us a lot of control but then didn't need its handheld on a daily basis. Imperva gives us a lot of that and we are still able to navigate it with ease.
Better Insight into web application - Absolutely great, checks all the traffic against RFC standards and will alert on common development mistakes that duplicate application traffic or provide attack vectors for potential attackers.
Have had several issues blocking a customer without producing alerts, while it happened only one week out of 2 years of working with the devices, it did produce a lot of headaches.
