Score:0

Why when I ping the FQDN of an EvenHub in Azure I get three different IP addreses?

in flag

I got connectivity problems with azure behind a firewall, so I made an script to ping every one minute.

Why when I ping the FQDN of an EvenHub in azure I get three different IP addreses? why there are 3?

I got another eventHub, different FQDN an there is only one IP

Score:1
ar flag

Because that's how Azure choose to configure it in that instance. They give you a FQDN, not an IP for a reason: they run a massive operation, and may switch things around for reasons such as load balancing, outages or similar.

You should not rely on whitelisting IP's. Many firewalls support regularly resolving domains into IP's so you can in effect whitelist a FQDN, and the FW will handle updating the rules to match the actual IP's.

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