command execution upon ssh

[nori heikkinen <nori@sccs.swarthmore.edu>]

question that should be easy, but that i can't turn up with a little
man-page reading:

i want to ssh to a remote machine (firewall), and then immediately
upon success, ssh to another remote machine.  i don't want to put this
in my .login, because i don't want it to always happen -- i want to be
able to *just* ssh to the first box, too, or have the option of going
through to the 2nd.

it seems this should have to do with the '-n' option for ssh.  but
trying `ssh -n machine1 ssh machine2` gave me the error:

Pseudo-terminal will not be allocated because stdin is not a terminal.

so a little googling turned up the -t flag, and `ssh -t -n machine1
ssh machine2` seems to do the job.

however (here's the problem), i can't type in the resultant terminals.
oops.

how can i fix this?  it would be great to have this capability ...

thanks,

</nori>

-- 
    .~.      nori @ sccs.swarthmore.edu
    /V\  http://www.sccs.swarthmore.edu/~nori/jnl/
   // \\          @ maenad.net
  /(   )\       www.maenad.net
   ^`~'^
            get my (*new*) key here:
   http://www.maenad.net/geek/gpg/7ede5499.asc
      (please *remove* old key 11e031f1!)