|-p port, -port-= port|
|port to connect to|
|-l login, -login-= login|
|remote login name|
|-c ccache, -ccache-= ccache|
|remote cred cache|
|-F -, --forwardable|
|forward forwardable credentials|
|-G -, --no-forwardable|
|do not forward forwardable credentials|
|-h -, --help
kf is useful when you do not want to enter your password on a remote host but want to have your tickets one for example AFS.
In order for kf to work you will need to acquire your initial ticket with forwardable flag, i.e. kinit-forwardable .
telnet is able to forward tickets by itself.