SHA 2

I was wondering if i could get some help setting up sha 2 and how the process works? i show'd a client our setting and they said our settings are incorrect. our settings we have diffle-hellman group exchange diffle-hellman group 14 diffle-hellman group 1

they said they did not see SHA 2 and that was incorrect i've surf the web and can not find any leads.

What settings do you refer to? What are you setting up? Client or server?