The firewall is NOT the honeypot. There is a lot of debate about the role of a firewall, and whether one should even be used, when you deploy a honeypot.
Because the point of the honeypot is to get the attention of malicious actors. While the role of the firewall is to keep unauthorized traffic out.
In any case, the honeypot is a target that the malicious actor is trying to exploit. While we are watching and recording exactly how they go about the process to learn more about methods. Or using this as a place for them to waste their time instead of going after real targets.