(Not sure about the word “Duplicate.” It’s more descriptive than “Copy” (which has copy and paste baggage associated with it), but it would also start with a ‘D’ and be located above “Delete.”)

The change would make things slightly less flexible, but would visually disassociate list management tasks (big picture) from port oriented tasks (smaller picture). And add another button (Nooo!).
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I’m not sure what to do about the plus and minus buttons. Ideally they’d be grouped together like they are now, but they’re above two fields relevant to adding a new port. Most of the examples I’ve found place the new port stuff in a popup, but you’ve said you want to avoid that.

(Oh, worth noting is that the smaller a button is, the harder it is to click on.)

I found this nifty workaround (http://tinyurl.com/y9lw5kh ), but that example is in a web browser. I think it’d require custom widgets to do natively, which would be a pain (or at least make cross platform compatibility more work :-/ ).

On the services dialog, the plus/minus button and other buttons interact like this: http://img709.imageshack.us/i/servicesarrows.png/ . Or, in words, the plus and minus button add to the ports and protocol list, the other buttons interact with the services list on the left. I couldn’t think of any other way to group the stuff to make the button’s intent clearer, and I’d like to avoid having another dialog involved here. I was hoping that the relative size of the buttons would help users identify what did what, but I’m definitely open to other ideas.

The load template is as you assume, and there’s no way to save templates. You can copy services from the list on the left easily by clicking on it (which fills the controls on the right) and hitting the ‘save as new’ button, so I don’t see a big need for saving templates. Instead, templates are just a way to get users started with their list of services they want to share. I’ll stick some common services in there like Apache, Ventrilo, etc, and hopefully people will get the idea on how to add their own.

Thanks for the links, checked them out and came up with a slightly better looking UI: http://img709.imageshack.us/img709/4857/servicesmodified.png . Don’t think I’ll be able to balance the UI like the apple link suggests easily, but I was able to get more uniform spacing and centering.

Here’s a picture of the services drop down: http://img215.imageshack.us/i/maindropdown.png/ . It’s just any services you’re sharing with a checkbox to quickly enable/disable them. That’s the same checkbox you see in the left of the services dialog.

Thanks again for the comments and suggestions.

I’m not entirely sure what’s going on in that Services dialog. You have the plus and minus buttons directly under the ports/protocol field, but you’ve also got “Add as New” and “Modify” buttons in the same Modify/Add Service frame. What’s the difference?

There’s also a “Load Template:” dropdown. I assume a template is a saved state of active services and ports, but there’s no indication of how to save a new template.

The window looks slightly cluttered. I dunno how easy it is to align things in Visual Studio, but it might be worth glancing through the Gnome or OS X HIG docs briefly.
http://library.gnome.org/devel/hig-book/stable/design-window.html.en
http://tinyurl.com/ygqlf2o

This may not help at all, but NetworkManager handles a slightly similar situation with VPN networks like so: http://jamesgecko.com/w/var/upload/random/networkmanager.png

The main window is pretty good (can’t get much simpler than that!), but what does the “services” field in the main window do? Does clicking a service open a new tab at the top? If so, how are new tabs closed?

It’s 128 now.