Multiple virtual private networks - one Interface

Hello

I read up on top of the site to create using IPSEC VPN. My question is, if I have a router dedictaed "VPN" in the same place, say the external interface is F0/0. I want to configure different VPN for this site to some remote sites using this router, but I want to be able to each of these VPN connections have got it of own interface, fo the goal, routing some subnets over a VPN connection and routing another subnet on the other VPN sites.

So Hub site, I have an outside interface, but need IPSEC VPN multi-site spoke and each site to have an interface I can route traffic through... If that makes sense?

Thank you

I fear that your post, as written makes no sense to me. You start by saying you have a router with an outside interface. Then, you say that you need more than one interface. On the surface that seems to indicate you need to get a different router which will have several available for VPN interfaces.

Maybe if stress you less the need for multiple interfaces and explain a bit more about what you really need that it would be a way to accomplish what you need with the existing router.

I'll start with what seems to indicate that with an interface of the router would have a card encryption. But a card encryption can have multiple instances of cryptographic definitions it contains with a single instance for each remote peer. So, for example, you could have crypto match GRANT_map 10 of peers A and GRANT_map 20 for homologous B and 30 GRANT_map for C counterpart. Within each instance of the encryption card you would identify a single access list to identify traffic to destination each peer. It might look like this:

map GRANT_map 10 ipsec-isakmp crypto

dieudo game address

defined peer 1.2.3.4

map GRANT_map 20 ipsec-isakmp crypto

match the address peerB

defined by the 5.6.7.8 peers

map GRANT_map 30 ipsec-isakmp crypto

match the address peerC

defined by peer 9.10.11.12

Dieudo extended IP access list

ip licensing 10.1.1.0 0.0.0.255 172.16.0.0 0.0.255.255

peerB extended IP access list

ip licensing 10.2.2.0 0.0.0.255 172.17.0.0 0.0.255.255

peerC extended IP access list

IP 10.3.3.0 allow 0.0.0.255 172.18.0.0 0.0.255.255

Or maybe you can consider using the GRE with IPSec VPN tunnels. You can configure several tunnels, each source just outside of the interface, and each of them would end on a different peer. You can send some 10 to Dieudo tunnel subnets and route to other subnets of tunnel 20-peerB and route to other subnets of tunnel 30-peerC. This kind of solution might meet your requirements.

HTH

Rick

Tags: Cisco Security

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