http://itknowledgeexchange.techtarget.com/itanswers/how-to-reconfigure-lan-after-move-from-dsl-to-t1/ Tue, 21 May 2013 20:11:10 +0000 hourly 1 http://itknowledgeexchange.techtarget.com/itanswers/how-to-reconfigure-lan-after-move-from-dsl-to-t1/#comment-74816 labnuke99 Fri, 12 Mar 2010 18:02:24 +0000 #comment-74816 If you are using a private address space on your LAN (10.x.x.x, 172.16-31.x.x or 192.168.x.x) then you do not need to change IP addresses on your systems. As the previous answer states, you will need to modify any public IP address mappings and modify the public DNS records appropriately. This is why it is always a good idea to use private address space on the PRIVATE side of the router. There is no need to use public IP addresses on a private network. This is one of the reasons why network address translation (NAT) was created.

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