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filanifisteku
Beginner

RVS4000 - firewall setup for vlan

Hi everybody,

I have a RVS4000 and I am going to configure vlan in the near future.

Among all other configurations sent by the internet provider company is this one :

Firewall NAT :

from x.x.2.0/24 to 0.0.0.0/24 should be NAT

from x.x.2.0/24 to x.x.0.0/21 should not be NAT

From all the other configurations, this one is not clear to me.

Can this configuration be done on a RVS4000 and where can it be done.

Please keep in touch with me if I am not making my self clear on  the question.

Thanks in advance.

1 REPLY 1
Alejandro Gallego
Cisco Employee

Welcome to Cisco Community!

You are correct that is not clear!

filani fisteku wrote:

Firewall NAT :

from x.x.2.0/24 to 0.0.0.0/24 should be NAT

from x.x.2.0/24 to x.x.0.0/21 should not be NAT

I would guess your company is trying to configure an MPLS network, in which case that rule would make a little sense. If you are setting up an MPLS network (Site to Site -- NOT VPN) then what they are telling you to do is create a route statement for each network. This would not be a Firewall rule.

SO:

(Will make up some numbers for clarity)

from: 12.20.2.0 the default route should be in 12.20.0.0 network (this is the part that is not completely clear)

from the 12.20.2.0 /24 network:

  • destination 20.20.0.0 255.255.248.0 next hop 12.20.2.1 <= (assuming the gateway for your WAN)

Let us know if we are heading in the right direction.

Good luck!