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Option1:

• If the SSL TLS profile used for management is known delete the same. This way the management access starts using the default certificate.
• For example, The following command deletes the SSL TLS profile used for HTTPS access named profile-1

> configure
# delete deviceconfig system ssl-tls-service-profile
# delete shared ssl-tls-service-profile profile-1
# commit
# exit

1. Since SSH access is possible, a new certificate can be created from the CLI.
2. Add the certificate to the SSL TLS profile
3. Use the newly configured certificate and SSL profile to be used for HTTPS.

Example below:

> request certificate generate ca yes certificate-name <cert name> name <IP or FQDN> algorithm RSA rsa-nbits 2048
> configure
# set shared ssl-tls-service-profile <profile name> certificate <cert name> protocol-settings min-version tls1-0 max-version tls1-2
# set deviceconfig system ssl-tls-service-profile <profile name>
# commit
# exit