HOW SET PFSENSE FIREWALL ALLOW GOOGLE BOT (BY PTR RECORD, DNS LOOKUP)

[hungudgm]

Dear All,

Please help me, "Google doesn't post a public list of IP addresses for webmasters to whitelist"
https://support.google.com/webmasters/answer/80553?hl=en

So, we use ptr record, that use DNS lookup, and check record contain string ".googlebot.com" to whitelist

Please help me config in pfsense

Thanks for any help  ;D

[jimp]

You cannot base firewall decisions on DNS results in that way.

And anyone who controls DNS for a netblock can return whatever result they want in a PTR, it would be trivial to bypass such a block.