You can selectively enable and disable DSA/RSA X509 public key-based algorithms: ssh-rsa, ssh-dss, x509v3-sign-rsa, x509v3-sign-dss.
To enable DSA/RSA X509 public key-based algorithms, use the following command:
configure ssh2 enable {pk-alg [pkalg_name | all]}
To disable DSA/RSA X509 public key-based algorithms, use the following command:
configure ssh2 disable {pk-alg [pkalg_name | all]}
To view which public key-based algorithms are currently enabled, use the following command:
show ssh2