Comodo does have a firewall, and it’s good. I thoroughly tested Comodo’s firewall and was impressed by how easy it was to use, as well as by its advanced features and customization options — which tech-savvy users will appreciate. Despite what Comodo’s website may say, the firewall is available as part of its free software package, so if you’re primarily looking for a decent and free firewall, Comodo is a decent option.
However, if the firewall is just one of many features you’re interested in, you’ll be better off going for a different premium antivirus suite — like Norton or McAfee — which have equally good firewalls, plus a lot of other features that are much better than Comodo’s.