s/^#?PrintLastLog .*$/PrintLastLog no/m or die;
s/$/\nAllowTcpForwarding no/ or die;
s/^#?X11Forwarding .*$/X11Forwarding no/m or die;
s/^#?PrintLastLog .*$/PrintLastLog no/m or die;
s/$/\nAllowTcpForwarding no/ or die;
s/^#?X11Forwarding .*$/X11Forwarding no/m or die;