IPSec VPN - Zyxel to pfSense works but pfSense to Zyxel fails
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I just setup my first pfSense firewall.
I'm setting up my VPNs. So far 2 out of 3 VPNs work (3 different firewalls). However, I have issues with third one.When zyxel firewall attempts to connect to pfSense, it works. However, when the pfSense attempts to connect to zyxel, it fails with error "[SA] : No proposal chosen" . There are no other errors on either the pfSense or Zyxel logs. It such a weird error.
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Update 1:
Something I did notice was that when I attempted to connect on the pfSense side (Status>IPsec>Overview), local and remote id would report as Any Identifier even though they are set to a specific identifier. Not sure if it makes a difference. I'll test by setting 0.0.0.0 for both identifiers to see it makes any difference. -
Update #2
This issue is still unresolved. However, I was able to properly configure the Zyxel to auto connect (its incoming VPN) whenever it determines that a connection is required. I would still appreciate if any suggestions can offered on why the pfsense can't connect to the zyxel but the zyxel can connect to the pfsense.