On Sun, Oct 11, 2009 at 8:43 AM, Aharon Schkolnik <aschkol...@gmail.com>wrote:
> On Thursday 08 October 2009, shimi wrote: > > The right way to do it is not with an Access Point. Someone needs to > > "multiplex" your connection to multiple devices. Since you have just > > one external IP address, someone needs to "share" it between your > > multiple machines and do "magic" that makes it (multiple unicast > > machines between one unicast address) work. We call that magic-maker a > > "NAT router" (which basically every home router does). > > Yeah, I realize that I need NAT (or PAT in Cisco terms), but I thought (I > admit I didn't check) that the AP might do the NAT. > > A pure AP is a "wireless switch" - it talks Layer 2 only. > > So what you > > need is an Ethernet router (with an Ethernet port on his WAN port). > > Thing is, I was wondering why I need a router. I don't need it to do any > routing decisions (unless I want to share files between connected PCs, > which I don't). I do need NAT, but I kind of thought an AP would do that. > > NAT is performed at Layer 3 (some would even say Layer 4?). A layer 2 device does not understand (nor cares about) these layers at all. It can just forward frames... -- Shimi
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