I just took over working on a ASL box for a customer that is about 150 miles away. Is there any way to see or set the SSH access username and password from web admin?
no way with WebAdmin, sorry. At the commandline you could set 'reset_pwd' in '/etc/wfe/conf/settings' to 1, this brings up the initial password screen when accessing the firewall via WebAdmin. But if the customer would have to login anyway he could change the passwords the default way (passwd).
