The SSH-2 protocol supports the following user authentications:
* Public key authentication (DSA, RSA*, OpenPGP)
* Host-based authentication
* Password-based authentication
Note: SSH-1 supports a wider range of user authentications, i.e., the public-key, RSA only, RhostsRSA, password, Rhosts (rsh-style), TIS, and Kerberos authentications.
The following are the countermeasures against database attacks: * Input Sanitization: The Database Administrator must sanitize any input received from a user. The data submitted should be checked for data
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The first step for protecting yourself from something is knowing how that something works. In the case of Google hacking, you will have to learn how it can be used