VPN with same IP class on both ends ?

RouterOS General
1

Hi,

I have two sites (one on fiber, other one on ADSL, both have fixed public IP), and I’d like to link local network of both through VPN. They use same IP class 192.168.1.X I have seen this tuto on Wiki: http://wiki.mikrotik.com/wiki/Manual:Interface/EoIP but it connects networks with different classes. Is there a way to do what I want ? or is it mandatory to use a different class for each end of the network ?

Thanks,

Vincèn

2

If you have two computers with the same ip how would the router know which to send the traffic to?

You really need two networks for it to be functional. You could do it in theory as long as each ip is only used once, but otherwise you would have a bunch of collisions


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3

Sorry if my explanations were not clear, I mean use half of class on one side of the tunnel, and the other half on other side so to avoid conflicts :slight_smile: and setup dhcp on each end to serve IP only on local half class :slight_smile: Is it possible ?

Thanks,

Vincèn

4

Are you setup with the subnet mask of /24 or /25?

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5

Use EoIP or L2TP with BCP and bridge the VPN interfaces with the LANs.
Setup proper DHCPs on both sides.

Secure VPN with IPSec Transport mode.

6

What he said.

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