We have a public DNN 6.2 web site and only admins and content editors can login to it. The site isn't interactive or social, so nobody else can logon or create accounts, etc. To present a less tempting target for hackers, we don't even show a login link, but our admins know the name of the login page. 

We want to show a logout link, though, if a user is logged in---and maybe a link to the account management page. We developed the skins ourselves, and I know VB and C#, but have done no real DNN development besides making the skin somewhat adaptive for mobile users. 

I'm thinking there's a DNN object in a some namespace that I could ask if the user is logged in or has a non-empty name attribute or something. (I looked for DNN API documentation, but can't find any, aside from some tutorials. Am I just dense?) Can someone please point me to the right object and namespace, and I can probably figure out the rest. Thanks in advance.