TLS/SSL is required for client connections to Unified Access Gateway appliances. Client-facing Unified Access Gateway appliances and intermediate servers that terminate TLS/SSL connections require TLS/SSL server certificates.
TLS/SSL server certificates are signed by a Certificate Authority (CA). A CA is a trusted entity that guarantees the identity of the certificate and its creator. When a certificate is signed by a trusted CA, users no longer receive messages asking them to verify the certificate, and thin client devices can connect without requiring additional configuration.
A default TLS/SSL server certificate is generated when you deploy a Unified Access Gateway appliance. For production environments, It is recommended to replace the default certificate as soon as possible. The default certificate is not signed by a trusted CA. Use the default certificate only in a non-production environment
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