and applies to protocol version 2 only.
The default is
.Dq no .
+.It Cm GssapiAuthentication
+Specifies whether authentication based on GSSAPI may be used, either using
+the result of a successful key exchange, or using GSSAPI user
+authentication.
+The default is
+.Dq yes .
+Note that this option applies to protocol version 2 only.
+.It Cm GssapiKeyExchange
+Specifies whether key exchange based on GSSAPI may be used. When using
+GSSAPI key exchange the server need not have a host key.
+The default is
+.Dq yes .
+Note that this option applies to protocol version 2 only.
+.It Cm GssapiUseSessionCredCache
+Specifies whether a unique credentials cache name should be generated per
+session for storing delegated credentials.
+The default is
+.Dq yes .
+Note that this option applies to protocol version 2 only.
.It Cm HostKey
Specifies the file containing the private host keys (default
.Pa /etc/ssh_host_key )