Noticed today when trying to test a URL in Google Search Console that it wasn’t able to access a live page. Checked the Firewall events and found that the Google Bot was repeatedly being blocked by Rule 100035C.
I’ve done a reverse DNS lookup on the affected IPs and they seem valid to me. For now I’ve disabled that rule as I can’t afford to be blocking access from Google! This seems to have done the trick for now and Google is accessing the page correctly.
I can see other posts mentioning similar problems, but they were from a lot earlier in the year and seem to have been resolved - seems like this may be a re-occurrence.
Please investigate and resolve this ASAP.