Self-signed certificates work only with a Secure Sockets Layer (SSL) connection and fail when IPSec is used.
IPSec LAN-to-LAN tunnels do not work with self-signed certificates on routers.
Once both routers have signed their own certificates (acting as a Certificate Authority (CA) for their own certificates), they do not trust each other because the certificate signing authority is not the same. Self-signed certificates work for SSL connections, but they do not work with the Internet Security Association and Key Management Protocol (ISAKMP) or IPSec Rivest, Shamir, and Adelman (RSA) signature implementation because the CA is required to sign or authenticate the certificates.
Note: A CA is recommended. Otherwise, certificates must be transported to each router manually. This is similar to authentication using RSA encryption, where public keys must be transferred to each router.
Trying to migrate a policy config from S370 WSA device to virtual WSA. The policy import throws an error:
Certificates signature verification failed due to Credential Encryption certificate
After replacing the proxy_config_gen...
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