I have hit an issue where internet browsing is slow but when looking at wireshark the round trip time on TCP 3WHS is always good. Not seeing delays in packets. Network graphs show the connection is not being maxed out. Network speed looks good yet the users report that page load times are slow.
I had to allow google and facebook tracking IP block/ranges
The traffic I saw was UDP 443
Google URLS
admin.google.com
ssl.google-analytics.com
*.google.com
www.google-analytics.com
www.google.com
code.google.com
update.googleapis.com
talk.google.com
*.gstatic.com
clientservices.googleapis.com
www.googleapis.com
accounts.google.com
clients4.google.com
*.googleapis.com
oauthaccountmanager.googleapis.com
clients2.googleusercontent.com
update.googleapis.com
Have also seen windows updates using up all the bandwidth so windows updates can be blocked during business hours or controlled with WSUS etc.
MS URLs
login.microsoftonline.com
aadcdn.msauth.net
*.microsoft.com
autologon.microsoftazuread-sso.com
IP's
FB ranges
31.13.64.0/18
66.220.144.0/20
69.171.224.0/19
69.63.176.0/20
Google Ranges
74.125.0.0/16
172.253.0.0/16
209.85.128.0/17
216.58.192.0/19
172.217.0.0/16
64.233.160.0/19
108.177.0.0/17
66.102.0.0/20
173.194.0.0/16
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