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TOPIC: problem with IAS

problem with IAS 10 years 6 days ago #18482

  • netbaba
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I have configured a VPN with a cisco 857 SDM, and i have installad IAS on a 2000 server, but the 2000 server cannot navigate on the external network... Any ideas?
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Re: problem with IAS 10 years 5 days ago #18487

  • Smurf
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Sorry gonna need a lot more detail then whats provided. Where is the Windows 2000 server ? Is the VPN Up and you cannot contact the Server ? Do you want to use the Windows 2000 IAS server with the VPN ? Etc...
Wayne Murphy
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Re: problem with IAS 10 years 5 days ago #18501

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Sorry gonna need a lot more detail then whats provided. Where is the Windows 2000 server ? Is the VPN Up and you cannot contact the Server ? Do you want to use the Windows 2000 IAS server with the VPN ? Etc...

the router is connected to a linux firewall. The other NIC of the firewall is connected to the LAN. The windows 2000 server is in the LAN. The VPN is up, but from the 2000 server I cannot access the external networks.
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Re: problem with IAS 10 years 5 days ago #18503

  • TheBishop
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You must have a different IP subnet at both ends of the VPN tunnel in order for the traffic to route across it. Don't get sidetracked with the networks in between; if the tunnel is up then they are not likely to be your problem
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Re: problem with IAS 10 years 5 days ago #18505

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You must have a different IP subnet at both ends of the VPN tunnel in order for the traffic to route across it. Don't get sidetracked with the networks in between; if the tunnel is up then they are not likely to be your problem

I haven't understand... 2000 server is in 192.168.1.0/24, router in 192.168.2.0/24, and without the vpn configuration 2000 server can access the external network...
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Re: problem with IAS 10 years 5 days ago #18511

  • Smurf
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Sorry netbaba but i think people don't fully understand what you want due to a lack of information and details

Sahirh provided this sticky to cover asking questions so you can get a better response http://www.firewall.cx/ftopict-668.html.

I am still not fully understanding how its configured. You have a Cisco 857 SDM, you are establishing a VPN connection to your main corporate office through a linux firewall. What is the VPN head end device that the router is connecting the VPN to ?

Where is the 2000 IAS server located (is this IAS or ISA ?) ? Is this at the remote site with the 857 router or is this at the main corporate office ?

I am not too sure how much i will be able to help with this one but i am sure if you provide all the necessary details above someone else in the forum may be able to provide an answer that you are looking for.

Thanks
Wayne Murphy
Firewall.cx Team Member
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Now working for a Security Company called Sec-1 Ltd in the UK, for any
Penetration Testing work visit www.sec-1.com or PM me for details.
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