I was reading a bit about firewalls, and I came across this story type questions, but I don't think I fully know how to answer it, or grasp the implications. The question can be seen below:
You are the person in charge of the IT of a company, which manages and uses a firewall of its own until now. This firewall is located at the company premises. Now your ISP offers a private firewall-context on a central large firewall at the ISP. This firewall is multitenant, so that every company can administer a firewall-context of its own. Which considerations are important for the decision-making and which parameters are of interest and must be taken into account to come to a well-founded decision?
I totally agree that the question is opinion based, but I think that's also one side of security, to weight pros and cons, to make trade-offs. Anyway, as long as I know if it is multinenat there is actually no way that other tenants can break my configuration, right? So, if this is not actually a risk, what can be some risks or pros/cons of this approach?