Have you checked this web site for answers for the DNS configuration issues: http://www.acmebw.com/askmr.htm A quick search on "network address translation" yielded 225 hits. An additional search on "NAT" yielded four extra hits. There are also a few good hints here for the router side: http://www.cisco.com/warp/public/701/60.html http://www.cisco.com/warp/public/cc/pd/iosw/ioft/ionetn/tech/emi os_wp.htm HTH, Paul Werner > Subject: NAT & DNS > > Please forgive my ignorance but I have been unable to find anything on > the > net that adequately defines how to configure DNS records to work with > NAT. > > The scenario is this: > > Web hosting co. & ISP wants to change all addresses to 10.x.x.x and > implement NAT on either a router or firewall. If we have a current > address > of 175.1.1.1 and change it to 10.1.1.1, what changes would I need to > make to > the DNS so that proper name resoultion takes place? > > Additionally, we have a customer that routes their traffic through us to > our > backbone provider and has a block of our public addresses. This customer > is > already NAT'd and privately addressed behind their own firewall. How > will > our NAT implementation affect them? > > Thanks in advance for your assistance! ________________________________________________ Get your own "800" number Voicemail, fax, email, and a lot more http://www.ureach.com/reg/tag _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]