isa network connection problems

[hulton88]

after setting up isa i conneted to inside network 10.15.7.*and (10.15.5.*through routers) then lost internet on 10.15.5.* and can now see computer in network places but when i click in isa server to reinstall client i get network connection not found i have dns setup on isa
can connect to all computers in network from any computer
but isa or from any computer to isa on a different subnet

10.16.5.*=isa
10.16.5.**=home1
10.16.7.*=home2 home1 connects to home2 and visa versa
isa connects to home1 but not home2
PLEASE HELP home 2 cant connect to isa

 

[SgtB]

Can ISA ping the 10.16.7.0 network? If not then you need to add a static route on the ISA server pointing to the 10.16.7.0 network.
Your ISA server right now has its external nic set up with a default gateway. All traffic is sent through this gateway (unless the traffic is destined for the same subnet, in this case the 10.16.5.0 network). If traffic is sent outside this subnet, then it will travel via the external gateway on the ISA server. If you set up a static route on the ISA server pointing to the 10.16.7.0 network, then traffic routed to that subnet will not go to the default gateway, but through the static route. Thus allowing machines on 'home2' to access the ISA server, and vice versa.
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[hulton88]

thankyou worked great sometimes you just overlook the obvious