how to specify cipher for ssh client ?

[Sunil K. Vallamkonda]

Hello,

I have:
SSH-1.5-OpenSSH_2.3.1p1

I find that this client displays error when I specify (from command line),
'-c' [cipher] for SSH1.  {for SSH2 looks okay}.
Thus, if I specify:
./ssh -v -l user -c des -1 host
or
./ssh -v -l user -c 3des -1 host

I get error:
bad cipher des [des]
or
error: bad cipher 3des [3des] 

respectively.... and client immediately exits !


But, this is okay:
./ssh -v -l user -c 3des-cbc -2 host


looks fine.

Any suggestions ?

Thank 
you,

Sunil.