Need help with 2 router NAT setup

[scooter4n]

Need little help setting up two routers (two networks) to 3rd NAT router.

All 3 Routers are CISCO RV325

Router 1

LAN 192.168.1.1

DHCP Clients

Router 2

LAN 192.168.3.1

DHCP Clients

NAT Router connects R1 and R2 and to internet

I need help setting up NAT's on R1, R2, and NAT Routers.

Here is the photo, speaks million words.

Picture not showing modem between NAT router and internet, sorry.

Thank you very very much...

[AllertGen]

Hello, scooter4n.

You need configure NAt only at NAT router. No need to configure NAT for R1 and R2. For connecting R1 and R2 to NAT router you can use any private network (for example you can use 192.168.5.0/29).

At the NAT router you need to use lines:

interface LAN
 ip nat inside
exit

interface WAN
 ip nat outside
exit

access-list 100 remark ---- ACL for NAT -------
access-list 100 permit [users network] any
ip nat inside source list 100 interface WAN overload

You can find more information about NAT configuration here: http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/13772-12.html

Best Regards.

[scooter4n]

Thank you AllertGen.

Sorry Im not good at terminal, and would like to setup routers using it's web interface.

SO to be clear.

NAT Router LAN 192.168.0.1

R1 WAN 192.168.0.2

R2 WAN 192.168.0.3

Now on NAT Router Nat 1 to 1 config, what do I put in?

Thank you very much again.

[AllertGen]

Hi, scooter4n.

You are right about IP addresses. But don't forget aboute routes (it's need for NAT Router to know how to send packets to end users) at NAT router (and at R1 and R2 routers if you want send traffic between users). Or you can configure automatic routing protocol.

I never used ASDM to configure devices, so can't help with it. For the CLI you can see the commands above.

Best Regards.

[scooter4n]

Sounds good, thank you again.

So Im on the right track only need few more things.

Now I need to port internet traffic to end users, setup NAT on NAT router.

TO WHO EVER CAN HELP PLEASE PITCH IN:

R1

WAN 192.168.0.2

LAN 192.168.1.1

R2

WAN 192.168.0.3

LAN 192.168.1.3

NAT ROUTER

WAN same network as LAN?

LAN 192.168.0.1 and WAN 192.168.0.4?

or

LAN 192.168.0.1 and WAN 10.10.1.1

and setup NAT  to forward from NAT WAN to R1 and R2 WAN?

or from NAT LAN to R1 and R2 WAN?

ANYONE?

thank you

[AllertGen]

Hi, scooter4n.

To let users from R1 reach users at R2 you just need add routes at R1 and at R2. Ath the R1: ip route 192.168.3.0 255.255.255.0 192.168.0.3

At R2: ip route 192.168.1.0 255.255.255.0 192.168.0.2

BTW, do you have routes at NAT router to end users (you should have both lines from R1 and R2 at NAT router)?

And if you don't want add routes for each network every time when you add new network behind your routers look at OSPF or EIGRP technologyes (you can find gueds in the internet very quick for it).

If you want link some ports from WAN interface of NAT router with end user you can search for PAT technology. For CLI command looks like this: ip nat inside source static [user_ip] [dest_port] [wan_ip] [dest_port] extendable. For example make a internal web server accesseble from the internet by 10000 port: ip nat inside source static 192.168.3.4 80 10.10.1.1 10000 extendable.

Best Regards.