The people from Corsaire have done it again. They have published a whitepaper on how you can secure your installation of Leopard. It’s a document describing the best practices and some of it should be common knowledge. It’s a follow up on the previous guides they published for Tiger and earlier.
It’s a good and easy read and you can benefit from this when you have your Mac connected to the outside world. Did I mention it’s available for free.
You can download the PDF from here.