The Auth panel allows you to configure authentication options for SSH sessions.
TIS and CryptoCard authentication are simple challenge/response forms of authentication available in SSH protocol version 1 only. You might use them if you were using S/Key one-time passwords, for example, or if you had a physical security token that generated responses to authentication challenges.
With this switch enabled, PuTTY will attempt these forms of authentication if the server is willing to try them. You will be presented with a challenge string (which will be different every time) and must supply the correct response in order to log in. If your server supports this, you should talk to your system administrator about precisely what form these challenges and responses take.
This option allows the SSH server to open forwarded connections back to your local copy of Pageant. If you are not running Pageant, this option will do nothing.
See chapter 7 for general information on Pageant, and section 7.2 for information on agent forwarding. Note that there is a security risk involved with enabling this option; see section 7.3 for details.
This box is where you enter the name of your private key file if you are using public key authentication. See chapter 6 for information about public key authentication in SSH.