Hello Team,
We have resolved the issue. For Certificate authetication, there was no issue as we have internal PKI certificate attached in Ipsec VPN. We had issue when creating new site in application that was giving trust message with fingerprint. For which we followed below in Mobile blade portal setting certificate.
we had to put the external certificate but digicert was giving only domain name cert so we had to combine this certificate with intermediate and root Certificate, then we created p12 cert which we uploaded Mobile blade portal setting, then trust warning message, gone. It is not asking while crating site.
Thanks all for your support.