Secure NAT devices are experiencing very slow internet connection. Devices with Firewall client via Web Proxy are OK.
We use SecureNAT on non Windows devices particularly mobile devices. The speed is usually tested on bandwidth monitoring websites and speeds fluctuates between between 50% and 10% of the speed achieved using Web proxy devices.
TMG is fully patched (7.0.9193.644) running on fully updated Windows Server 2008R2.
Setup:
Internal Network Card:
IP : X.X.X.X
Subnet: 255.255.248.0
Gateway: no gateway defined
Dns 1 (pointing to internal DNS server 1 )
Dns 2 (pointing to internal DNS server 2 )
External Network Card 1:
IP : X.X.X.X
Subnet: 255.255.255.248
Gateway: X.X.X.X
Dns 1: no DNS defined
Dns 2: no DNS defined
External Netwrok Card 2:
IP : X.X.X.X
Subnet: 255.255.255.248
Gateway: X.X.X.X
Dns 1: no DNS defined
Dns 2: no DNS defined
Binding Order
Internal
External 1
External 2
ISP Redundancy: Load Balancing
We were able to replicate this same problem on a bare TMG configuration with just 2 Network cards (internal and external) and 1 simple firewall rule.
Kind regards,
Evan
