Summary
In this chapter, you learned about IDSs and IPSs and how to configure OPNsense as an IDS to gather traffic alerts for traffic based on rulesets. You also learned about IPS mode, as well as how to enable it and block traffic on the local network. In the Troubleshooting section, we explored common issues that you may face while using an I(DP)S in OPNsense and learned how to solve each.
In the next chapter, we'll take traffic inspection to the next level by using the next-generation capabilities that are available via Sunny Valley's Zenarmor plugin.
