google ip address

I have setup some rules on our firewall to block https to accommodate restricting users to facebook.  My issue is now I have some strangeness getting to

I can add exceptions to the rules by including ip address that google uses, however I would like to find out if there is a list of IP address that I can add instead of doing them slowly as I notice problems reaching sites.

Any body have an idea what IPs I need?

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Natty GregIn Theory (IT)Commented:
unblock https, youre blocking everything that uses https including
now block instead or redirect them to whatever site you want them to see.
Soufiane Adil, Ph.DIT, Network Architect - CCNP/CCDPCommented:
The following IP address ranges belong to Google: - - - - - - -

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Seth SimmonsSr. Systems AdministratorCommented:
agree with natty; you're doing this backwards
blocking an entire protocol just for one site doesn't make sense
it puts you in the position like this to now manually add all sites that run on port 443 apparently starting with google
you'll find users complaining they can't get to other secure sites and you'll have to start adding those which amounts to additional unecessary administrative overhead for you
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Dan ArseneauCommented:
And as a possible solution, add a DNS zone called and don't add any records.  Anyone machine that is joined to your domain wanting to visit that url will go nowhere.  Or point an 'A' (Host) record to an internal website that shows that you are blocking it.
IKtechAuthor Commented:
Well it's a little more complicated than just blocking facebook.  I use a watchguard device for our firewall/router.  I have http rules that work with a installed service called webblocker.  However, I needed https rules to get the webblocker working on sites that use https.  The watchguard device decrypts https and reencrypts it using a cert on that device (a cert is installed on all PCs as well).  This allows the WG device to determine if the traffic contains a category that is blocked or not.  This seems to work fine with all other sites except google.  So the exception is not really for the proxy instead it is for the "content inspection" of the WG device.

Watchguard has informed me that this issue has been a problem for others as well and the fix has yet TBD.  Hopefully I won't need to add google to the content inspections exceptions once a fix has been released.
IKtechAuthor Commented:
I added the address ranges to a rule that is processed before my proxy rules and it works a treat.  Thanks!!!
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