Hi Experts, I have setup a Windows 2003 server (AD) and having DHCP, DNS and RRAS(VPN) is being setup. The remote client when connected via Internet VPN into the corporate network, the client has managed to login and obtain an IP address. However when the client tries to make use of this VPN connection to surf the Internet, the page could not be retrieved.
Upon careful looking at the IP allocation, the client is being allocated to an address 192.168.1.50/32 and gateway is also 192.1685.1.50. Therefore the main issue would be the gateway IP address. I have defined the router option in the DHCP scope and this does not resolve the problem.
Please advice how this could be resolved.
TIA.
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by: LimeSMJPosted on 2006-02-16 at 17:03:25ID: 15977131
The problem lies in the way VPN is designed to work... To prevent the creation of a network bridge, your computer will re-route all packets into your work LAN once the session has begun. If it did not do this, the remote client will in essence bridge the Internet -> client -> work LAN... this is a huge security risk as the whole point of firewalling your LAN will be defeated.
To solve this problem you have several options. Here are some:
1. If the remote client is behind a firewall and you are 100% confident about the integrity of the remote network, go into the VPN properties > Internet Protocol properties and uncheck the 'Use remote gateway' option. This will create the bridge described above and allow both web browsing and VPN access. This method, however, is NOT recommended as it will (as stated above) bypass all security measures that your LAN is protected against.
2. Create a web proxy in your work LAN and set the remote's IE software to use the VPN web proxy.
3. If your users have a desktop at work, setup and deploy Remote Desktop Connections so the user can browse off their office computer. Plus you get the added benefit of users being able to use applications that their home computer does not have... This is the option that I have setup at my office.
4. Tell them that when on VPN, web browsing is not allowed. You'll get a lot of complaints but better safe than sorry.
Good luck.