AlienVault USM (from AT&T Cybersecurity) might be a bit more popular than netfilter. We know about 1 link to it since March 2021 and only 1 link to netfilter. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
The netfilter subsystem handles this, it's part of the Linux Kernel and part of all linux distros that don't use a custom kernel. You can read more about it here. Source: about 3 years ago
AlienVault (Now AT&T Security USM-Anywhere) should do good things right out of the gate. I like its focus on Kill Chain Taxonomy. If you have no idea what is going on with your network, AlienVault gets you good information quickly. https://cybersecurity.att.com/products/usm-anywhere. Source: almost 2 years ago
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