I just installed several packages and ssh is working on this solaris 10 box. I am not certain that I needed all of these:
SUNWsshcu
SUNWsshdr
SUNWsshdu
SUNWsshr
SUNWsshu
Can anyone confirm the packages that are really necessary?
Not sure if I understand your question correctly. You will need all those packages for ssh to work. If you had installed Openssh packages, they you can safely remove these packages, as openssh will be under /usr/local.