Previously, when I was browsing other forums, someone recommended this “fool‑proof” “firewall”—is it really effective?
The community edition is free and open‑source, while the commercial edition requires a license.
Add a repository link:
Its usefulness can’t be said to be nonexistent, but it’s certainly not much. If operations have reached the point where they need to rely on these things, then whether or not they exist is absolutely irrelevant.
Maybe we can phrase it differently: if ops have reached the point where they need to rely on these tools, then whether there are ops staff or not is actually irrelevant 
I personally feel these tools are mainly aimed at personal site building (open‑source version) / small non‑IT enterprises (professional version). For someone like me, whose blog is entirely supported by Alibaba Cloud Shield, if a security need suddenly arises, I could consider it, but for those who specialize in building websites, it’s not really sufficient.
「いいね！」 1