> There is a least one situation where NAT *does* provide a small amount of > necessary security. > > Try this at home, with/without NAT: > > 1. Buy a new PC with Windows installed > 2. Install all security patches needed since the OS was installed > > Without NAT, you're unpatched PC will get infected in less than 1 minute.
Its the firewall included with the NAT which protects against the infection, not the NAT. So you can remove the NAT, leave the firewall, and be just as secure.