Hi Experts,

We have recently migrated to office365 therefore our client needs to access https://login.microsoftonline.com portal and its all application like SharePoint we feel that something is wrong when accessing this portal or Microsoft TechNet site time out errors, slowness and browser hanging issues so we check internet speed all fine all other sites like daily motion, Facebook all are working fine.

We also checked logging (From TMG) that anything blocking but nothing is blocking.

Our Setup (Scenario)

Client Configuration:

IP : 10.1.x.x

Mask : 255.255.0.0.

Gateway : 10.1.0.1 (Router IP)

DNS 1 : 10.1.0.50 (Domain Controller)

DNS 2 : 10.11.0.24 (Domain Controller)

• TMG Setting at Internet Browser through group policy
• 10.1.0.45 (TMG Server)
• Client has firewall client to access WinSock Based Applications

DNS Configuration:

Active Directory Integrated DNS Server

Forwarding set :

8.8.8.8 (Google Public DNS)

10.11.0.24 (Domain Controller)

TMG Server Configuration:

Edge Firewall

Internal network

IP : 10.1.x.x

Mask : 255.255.0.0.

Gateway : 10.1.0.1 (Router IP)

DNS 1 : 10.1.0.50 (Domain Controller)

DNS 2 : 10.11.0.24 (Domain Controller)

External network

IP : 10.6.0.3

Mask : 255.255.0.0.

Gateway : 10.6.0.1 (Router IP)

DNS 1 : 10.1.6.0.1 (Router IP)