Before we turn to our analysis of CRA lending data, we have two important points to note regarding the CRA and its possible connection to the current mortgage crisis. The first point is a matter of timing. The current crisis is rooted in the poor performance of mortgage loans made between 2005 and 2007.
The three different NAT types are Open, Moderate, and Strict. Your NAT type is typically the result of the network you are using to connect to the Internet, and influenced by the settings or features of the router or gateway on that network.
NAT vs. Double NAT Before we delve more into what double NAT is, how to identify it, and how to correct or compensate for it, let's first briefly review how NAT works. In a typical home network, you are allotted a single public IP address by your ISP, and this address gets issued to your router when you plug it into the ISP-provided gateway device (e.g. a cable or DSL modem).