I have a 3825 with a 65.x.x.x /30 address range from my isp. I have assigned one of the 2 usable addresses to the G0/0 interface of the router.
My isp has also provided me with a 209.x.x.x /27 range to use as well.
I now need to migrate all my web, ftp, mail, vpn, and other resources to statically natted privately assigned address that map to addresses in the 209 address space. This needs to happen through the G0/0 interface of the same 3825 router.
I have tried to assign a secondary IP address to the G0/0 interface but it does not let me.
I am a beginner- but looking to build my skill set.
All help here would be most appreciated.
Thank you in advance.
where u will place the DMZ servers??.ideally 3825 comes with 2 in built Gig interfaces so wan link terminated on Gi0/0 and Gi0/1 u can use for lan termination.The Gi0/1 interface can have ip from subnet 209.x.x.x and secondary ip from your private subnet and then you can do plain static nat with private ip==209.x.x.x series ip.
In another option u have HWIC-4Esw card which has ethernet interfaces that u can use for your DMZ server termination in which case u do not have to give secondary ip on Gi 0/1 adnd it can have ip from 209.x.x.x segment only and using HWIC-4Esw u can create vlan for servers and private ip spance will be used by that vlan.natting part will remain same.