Nat configuration

[Ridma Ransara Jayaweera]

Dear all

I have issue on with new nat requiremnet.

i have attached a diagtam.

Current setup

Side A cannot use 10.0.0.0/8 IPs.

Side B can’t use any IP except 10.0.0.0/8.

We only have access to Router R1.

Currently Side a users access side B servers with a static nat configured on router R1

Since side B users default gate way is in R2 there PC have route entry to send traffic destinated to 10.0.0.0/8 network to R1(192.168.10.24).

New requirement

Now Side A user PC-A need to access 172.16.1.0/24 network and that side except only 192.168.10.0/24 ip range. So we need to nat PC-B(10.1.13.113) to 192.168.10.0/24 ip

Since 10.1.13.113 default gateway is 10.1.13.254 we have add a route in PC –A to send traffic to destinated 172.16.10/24 to R2(10.1.13.253).

Issue

We coudnt configure the nat.

Can we configure nat for both side ( nat inside and outside in same interface).

Pls help

Thanks

[Giuseppe Larosa]

Hello Ridma,

may you post your current NAT configuration ?

>>

Can we configure nat for both side ( nat inside and outside in same interface).

a given interface is inside EXOR outside it cannot be both at the same time.

However you can also NAT from outside to inside if needed

NAT INSIDE to OUTSIDE

ip nat inside source .....

for NAT OUTSIDE to INSIDE

ip nat outside source ....

this is allowed

Hope to help

Giuseppe

[Ridma Ransara Jayaweera]

Hi Giuseppe

My current nat config is

On Router R1

ip nat inside source static  192.168.10.x 10.1.13.x

int fa0/0

ip nat inside

int fa0/1

ip nat out side