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currently my network use Cisco ASA as firewall, the uplink is PPPoE from ISP, customer want build HA firewall in this environment, unfortunately ASA doesn't suppport PPPoE with HA mode.
I recomend customer to use Sophos XG or UTM, but I am not sure if Sophos XG and UTM support PPPoE link with HA mode??
Hi changqing li
As per our KB article here: https://community.sophos.com/kb/en-us/123174, HA with PPPoE interfaces are supported, however its only supported in "Active/Passive" mode and not "Active/Active" mode.