Blocking All of the Microsoft Cloud Network

I don’t use MS Azure, and none of the apps that I run use it. I don’t seem to be able to find specific ASNs for their cloud, and my fear is I will block the Bing bot. Does anyone know how I can block the MS Cloud (ASNs, IPs, etc.) without blocking Bing?

A firewall rule like this will block all traffic from Microsoft ASNs, but allow known good bots.

(ip.geoip.asnum in {8068 8069 8070 8071 8072 8073 8074 8075} and not cf.client.bot)

You will need to verify the ASNs before deploying this rule, perhaps only the last two are used by Azure. You should also report abuse to Microsoft, contact details here.

1 Like

That seems to have really helped. We still have a few getting through but it made a big difference. Thank you!

This topic was automatically closed 3 days after the last reply. New replies are no longer allowed.