Accessing the internet with forefront after subnet change.

I change my subnet from to to allow more IPs. My old range is -

The new range is - The 192.168.1.x computers with the new subnet mask can still access the internet through Microsoft Forefront. The 192.168.0.x computers can not access the internet.

I added - to the internal address range in forefront but still no access. I also changed the mask on the internal network card on Forefront
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ChrisConnect With a Mentor Commented:
once you have checked routing and Network sets in the places above that should be enough

you should be good to go
you will need to make sure the routing and networking is up to date on the TMG/ISA server as well so that the new network range is configured as being internal otherwise anything in the subnet will be considered as external and dropped

for TMG if you go to the networking container and then on the networks Tab get the properties of the Internal Network and check on the Addresses Tab of the properties to make sure your new subnet is present or add
then check the routing tab and make sure the routing is up to date
If you have a standard two legged TMG setup then you will need to add the route via "route add" first to make sure the static route is correct and then TMG should pick it up
BiofilmincAuthor Commented:
It looks like it may be because my DNS server was not yet using the same subnet. Anything else I need to worry about with changing subnets?
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