Merging two networks

5 pts.
Tags:
DHCP
Internet access
Network design
Hi, I am working in real State Company, which is part of one big group. we have 50 users here and small server room for back and internet. we are running internet trough wireless link from our big group head office and email exchange is also there, we have only baby Domain Controller. i have also 3rd party ISP DSL Internet, which help me when our link is down from Head office. what is the problem. if link down and every use DSL trough wireless, then they cannot print cannot access server machine because network and IP is different. what i need. i need to marge DSL connection with my local network so when link down and users are using DSL, in the same time they can print and they can access server folders. Note: i have DHCP IP. Need experts Advise. thanks
ASKED: November 23, 2008  9:10 AM
UPDATED: November 25, 2008  12:52 AM

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You can merge the DSL internet connection by using the same class of IP address that you use with your Head Office network, connect the DSL internet connection to an ISA server and then to you LAN so that you will not face any problems while accessing the LAN or H.O. WAN.

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Create a site to site VPN. You will need a VPN firewall or VPN appliance at each end preferably made by the same vendor. The hardware vendor should be able to instruct you on troubleshooting the connection.

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