How to differ NAT by outside interface on router C891F

[Eurenergy]

Hello experts,

i've benn reading many articles about how to setup NAT but didn't find an answer for my "special case" with natting across vlans but not to the internet

I want to do the following:

I've three vlan interfaces

       - if1 has ip address 10.10.10.1/24, 

       - if2 has ip address 10.10.20.1/24,

       - if 3 has ip address 10.10.30.1/24

if 1 may be an inside interface

        - behind it there's a server with ip-address 10.10.10.5

if 2 may be an outside interface

        - On this interface I'd like to NAT the inside 10.10.10.5 to outside 10.10.20.5

if 3 may be another outside interface

        - On this interface I'd like to NAT the inside 10.10.10.5 to (different) outside adress: 10.10.30.5

so

- a user coming from internal network behind if 2 can access the server using the ip 10.10.20.5

- a user coming from internal network behind if 3 can access the server using the ip 10.10.30.5

can this be configured on a cisco C891F router ? How to do that ?

Thanks for any help

[Georg Pauwen]

Hello,

it is unclear from your post what you want to translate to what. Post a schematic drawing that visualizes what you are trying to achieve...

[Eurenergy]

Hi Georg,

I've attached my schematic drawing.

I found that in an ASA I could write:

static (vlan1, vlan2) 10.10.10.5 10.10.20.5 netmask 255.255.255.255

static (vlan1, vlan3) 10.10.10.5 10.10.30.5 netmask 255.255.255.255

but for the IOS router I didn't find something like that; looks like I only can declare one single NAT-roule per inside source:

ip nat inside source static 10.10.10.5 10.10.20.5

Interface vlan 1

ip address 10.10.10.1 255.255.255.0

ip nat inside

Exit

Interface vlan 2

ip address 10.10.10.2 255.255.255.0

ip nat outside

exit

--> so - no Chance to declare a different translation roule  to vlan 3 ?