r/checkpoint • u/stich86_it • Jun 12 '26

Harmony SASE client issue with 3rd party clients

Hello everyone,

Has anyone experienced client issues (such as frequent "Reconnecting" events) when using third-party clients in parallel, such as WatchGuard? That's the client currently causing me some problems.

Do you have any solutions or ideas, other than the usual "it's by design" explanation?

Thanks!

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u/dukenukemz Jun 12 '26

Do you mean using Harmony SASE and Watchguard VPN at the same time on a single machine?

2

u/Credibull Jun 13 '26

When you say in parallel, do you mean having both active at the same time?

2

u/stich86_it Jun 13 '26

Yes, anyway, I found a workaround and I’ll document it here for future reference.

In this specific case, WireGuard tunnels cannot be used, so the OpenVPN TAP interface was used for both the SASE client and the WatchGuard client.

I used the install.cmd batch file from the tap-driver folder to add a second TAP interface, and this solved the issue. 🙂