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Different Gateways for Data and Internet Traffic (web proxy)

Posted on 2013-01-08
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Last Modified: 2013-01-18
Hi,

i would like to change data and Internet traffic by adding different gateways.

current network setup:

- internet is connected to firewall outside interface (122.133.121.120)

- firewall Inside interface (192.168.10.254 ) is connect to L3 (HP Procurve) swithch (192.168.10.1 ) and (192.168.20.1 - LAN)

- we have vlans configured on L3 switch and L3 switch is acting as Gateway for LAN machines.

- firewall LAN interface (192.168.10.1) is acting as GW for L3 switch.

* All data (vpn also) and internet traffic is passing through L3 and then Firewall at this moment.

- I configured Proxy server using TMG. ( TMG lan interface is having 192.168.20.2 without Gateway and WAN interface is having Public IP address.

i like to add routes as below:

1) All IP/Data traffic ( or ) traffic coming from 192.168.20.0 should pass through 192.168.20.1.

2) remaining all traffic (internet ) should pass through Proxy Server (TMG).



we are using HP Procurve 2910al switch.

much appreciate if any body help me to setup.

many thanks.
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Question by:hellosoft
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Expert Comment

by:setasoujiro
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I think you just need to apply a proxy to all the clients (either by gpo or manually)
and point that to the TMG.
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Author Comment

by:hellosoft
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Thanks for quick response,

but, what about websites running between VPN's . can we still access those sites,if i use GPO for poxy.
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by:setasoujiro
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Yes , but it would probably require some routes/adjustments on the TMG/proxy
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Author Comment

by:hellosoft
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i think it would be easy, if we route traffic on L3 switch right.
no need to make changes in GPO and we leave by configuring Transparent Proxy.

Thanks,
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Expert Comment

by:giltjr
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You should be able to set the default route to 192.168.20.2 (the TMG proxy) and then setup routes for all other subnets pointing to 192.168.20.1.

This assumes that the TMG box is configured so that it will act as a transparent proxy and a router/GW at the same time.
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Author Comment

by:hellosoft
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Thanks for response,

i got it. but,

i used the following commands

- ip route 192.168.0.0 255.255.255.0 192.168.20.1 ( for data and internal websites)

- ip route 0.0.0.0 0.0.0.0 192.168.20.2 ( for internet )

these commands didn't worked for me.


can you tell me commands or any example commands for my setup.

Thanks
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by:setasoujiro
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What do you mean by didn't work?
did you get an error or something?
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Accepted Solution

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giltjr earned 250 total points
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I re-read your question.

First please do answer setasoujiro's questions.

Second, you posted these two requirments:


1) All IP/Data traffic ( or ) traffic coming from 192.168.20.0 should pass through 192.168.20.1.

2) remaining all traffic (internet ) should pass through Proxy Server (TMG).

What do you mean by "IP/Data" and "Internet"?  "Internet" is not a type of traffic, the type of traffic on the Internet is "IP" and typically carriers data.

Routing tables send things based on the IP address of the destination, not based on the type of traffic and the destination.
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Author Comment

by:hellosoft
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sorry,

Data traffic is ok.
but,
unable to access local sites (inter-company) and internet is also not working.
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by:setasoujiro
setasoujiro earned 250 total points
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the other sites connected over vpn... shouldn't they be included in your routes?
It seems to me they are included in the 0.0.0.0 and that won't work.
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by:hellosoft
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check the all reply messages.
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Expert Comment

by:giltjr
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Are there other IP subnets on your internal network?

If so, then you need static routes defined pointing to the the correct router/GW.  192.168.20.1?
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Expert Comment

by:setasoujiro
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If data traffic is working through .2, then this would be fine.
but as i said you would need to add the other sites as well in the routing table. Otherwise it will go to the TMG.

And for the "internet", are you sure the correct route is followed? do a traceroute and see what happens?
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Author Closing Comment

by:hellosoft
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resolved issue my self.
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Expert Comment

by:giltjr
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Could you share with us how you resolved it.  That way others that need to do the same thing may benefit from your solution.
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