From: mirkk@gmail.com   
      
   Grant Taylor  ha scritto:   
   > On 3/18/20 5:26 PM, Mirko wrote:   
   >> Hello all,   
   >   
   > Hi,   
   >   
   >> the home access point connected to the phone line have a mac address   
   >> or no ?   
   >   
   > I assume that you're asking about the /outside/ network interface.   
   >   
   > It depends on the specific technology in use.   
   >   
   >> I think it has one MAC ,but I'm not sure.   
   >   
   > There are almost always (at least) two interfaces network interfaces;   
   > one /outside/ and one /inside/.  They usually are Ethernet like and have   
   > a MAC address.   
   >   
   > That's traditional routers.   
      
   They have the internal/ private lan interfaces with private IP ,   
    and one public throught PPPoE .   
   >   
   > Wireless routers usually have an additional /inside/ interface that is   
   > the wireless portion.   
   >   
   > Wireless access points are in and of themselves different critters.   
   > They typically have a wired interface and a wireless interface (bridged   
   > together), each of which have their own MAC.   
   >   
   > Note:  Wired and wireless MACs are different from each other.   
   > (Simplistically, Wireless MACs are a superset of wired MACs.)   
   >   
      
   I know, using a packet sniffer as wireshark or airodump it's   
    visible the MAC address of a AP router.   
   It's different from ethernet interface ( they have typically 4   
    ethernet port with the same MAC).   
      
   >> PPPoE used in DSL modem/router   
   >>   encapsulates IP packets inside   
   >>   ethernet frame  ?   
   >   
   > Yes.   
   >   
   > The "E" is the pertinent part.  There is also PPP over ATM, which being   
   > ATM does not use MAC addresses.  Hence depending on the specific technology.   
   >   
      
   How may I know the MAC address inside PPPoE frames?  AP/routers   
    don't indicate MAC address of the public interface.   
   They have same version of linux/BSD embedded, a small web server,   
    and a little shell like busybox accesible via telnet.   
      
   Thanks   
      
      
   >> Thanks   
   >   
   > You're welcome.   
   >   
   >   
   >   
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