An increasing number of companies are putting their services in third party server farms. These server farms end up being like little Internet's and those companies cannot tell me their IP addresses since they rotate. Allowing traffic to these servers can be like allowing an entire country, like China. How can you separate the good from the bad?
I am using a DNS Host in my firewall rule, but it does not update frequently enough or allow for multiple IP's. Users' get a different IP.
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