I have implemented a Site-to-Site IPsec tunnel between a Juniper SSG firewall and a SonicWall.
However, any traffic that I send over the tunnel gets dropped on the SonicWall with an error saying
sonicwall ipsec vpn decryption failed selector check error.
I have tried multiple things with no luck including disabling replay protection and enabling fragmented packets handling.
Does anyone know what this error message means? What is the selector check?