IOT security software recommandations

I am starting to have more and more IOT objects in my house and I would like to have a protection or some kind of antivirus for my devices to protect my home network. Do you guys know if such a service exists ? I have done a little research and I can't find anything. The only service I have found is https://securihouse.herokuapp.com/ which looks very promising but not very developped.

What would you guys recommend to secure my network against attacks such as Mirai or else ? Thank you in advance.