Huh? I thought one of the appeals of Tailscale is that security is done at the network level; plus that your network is private, so you don't get randos knocking at your ports.
Anyway; Tailscale is not your only network. If you’re on a laptop, you need to be able to log onto rando wifi networks. If you’re at home, you need to be mindful of your smart fridge going rogue. You need to run a firewall. Tailscale adds a separate, Tailscale-specific, firewall with centralized management. Now you have two firewalls.
