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2 IPSecs (site-to-site, with 3rd party devices) on the same destination

lee_sarawutlee_sarawut Newbie ✭
in Mid Range Firewalls

Hi,

I'd like to know the solution when requiring two IPSec VPNs (site-to-site) on the same subnet at remote branch. I'm trying on the existing FW, it didn't allow to establish 2 tunnels on the same destination. Would be appreciate if you've any idea/suggestion.

Thanks.

Category: Mid Range Firewalls
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Answers

  • TKWITSTKWITS Community Legend ✭✭✭✭✭

    Do not create two tunnels, have all subnets going through the same IKE tunnel. You'll have one IKE tunnel with two IPSec SAs.

  • lee_sarawutlee_sarawut Newbie ✭

    The reason I want 2 tunnels is I need a redundant link(with separate provider in the same FW appliance, at HQ). Then please give me a bit how to enable 1 tunnel that can support 2 IPSec SAs.

  • ArkwrightArkwright All-Knowing Sage ✭✭✭✭
    edited April 2023

    Use routed mode. One tunnel per pair of WAN links.

    Or fill in both public IPs on a "normal" site-site tunnel.

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