I recently got a router from my ISP, which has an old firmware that is vulnerable to malware and hackers. So, I’ve been reading a lot about how to configure your router and how to choose a good router from a manufacturer who cares about its customers’ security. This is the best website on the subject:
If you want to start a business or if you want to start a freelancing career, this is the website to learn how to protect yourself from intruders into your network.
It took me some time to find this website, but it is the most comprehensive guide on the subject.
Hope this helps.