\begin{frame}
\frametitle{Introductie}
+ \begin{block}{Wat is SSH}
+ \pause
+ \begin{enumerate}
+ \item remote shell
+ \item x forwarding
+ \item port forwarding
+ \item ...
+ \end{enumerate}
+ \end{block}
+ \pause
+ \begin{block}{Versleuteling}
+ \end{block}
\end{frame}