WRT54G and WAP11

Discussion in 'Cisco/Linksys Wireless Routers' started by worm9110, Dec 31, 2005.

  1. worm9110

    worm9110 Network Guru Member

    I have a WRT54G v4.20.7. I have multiple wireless devices connected to it using WEP and MAC filtering (permitting only) mode. I live in an appartment complex and my neighbor wanted to use my wireless connection for his laptop. He said he would split the bill with me so I agreed. So I gave him my WEP key and added his MAC address. Recently he purchased a Access Point, think it is a WAP11, and bridged it to my WRT54G, wirelessly. I think he wants to connect other computers using a hub. What I am trying to figure out is when I click on the refresh screen on the 'Wireless Client MAC List' his AP doesn't show up. Also in DHCP there is not an IP assigned to his AP but when I look at the logs sure enough his AP is accessing my the internet through my WRT54G router. Why is he able to access my network without allowing his MAC address from his AP to go through????
  2. ConverseNation

    ConverseNation Network Guru Member

    I am no expert, but here is the theory I have

    I believe this has to do with layers of the TCP-IP stack. A router is like a traffic cop and must know where each device is (MAC Address with an IP assigned) however when you go through a bridge, there is no side exit or entry so it simply passes through. Thus the WAP11 is doing nothing more than taking the data packets from the Air (wirelesss) and sending them Wired to the next device. If the next device is his PC then the MAC of the PC is what will need to pass your authentication. If he connects to a hub or switch there may be more data in the packet headers but I believe that only the MAC of the devices connected to the AP that have authenticated against your WRTXXXX will gain access to your internet connection. However, if he is using internet connection sharing on his PC then it can conceivably have several devices that access the internet through the one PC that is authenticated. I would have to set up a similar scenario to be certain. Hope this helps and again, just my theory, maybe someone else can validate this.

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