I can't get to bing.com on a fresh install of pfSense. I've tried several installs and it's always the same. I get a 404 error. I can go to any other website. Just not bing.com. Anyone else had this problem and if so is there a fix?
It's a feature, we're not fans of Microsoft. ;D
No seriously, sounds like it's not a firewall-related issue. You're getting to some web server since you're getting a 404, and unless you put in an override in the DNS forwarder, it's sending you to whatever IP your configured DNS servers are responding with. What IP does bing.com resolve to?