IPSec with remote subnet that's also another local subnet



  • Hi All,

    I while back I asked: https://forum.netgate.com/topic/136548/multiple-ipsec-with-same-remote-subnets but now I'm facing another question I can't wrap my head around how to accomplish it without the prospect of blowing things up, suppose this setup:

    Local_LAN_1
    Local_LAN_2 <-- IPSec P2 --> Remote_LAN

    The Remote_LAN is the same subnet as Local_LAN_1 or has an overlapping subnet with Local_LAN_1.

    Is that even possible? How does the routing in that case work? Does Local_LAN_2 now loose connectivity to Local_LAN_1 or will it never reach Remote_LAN?

    Thanks for any light shed!
    Cukal


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