MAC Address Aunthentication?
82739
MAC addresses are fixed.  And each network card or networking device has it's own code.  It is something that is set by the manufacturer.\n\nThe best way is to go to the "Command Prompt".  With XP, press Start/Run.  In the window type "cmd" and hit enter, that will bring up a DOS box.  At the cursor, enter: \n\nIPCONFIG /ALL.\n\nThat will give you detailed information about your network cards, including the MAC address.  It will look something like this:\n\n00-11-d8-b3-3c-95\n\nThis is a fixed address, and never changes.  Once you have this, access the router administration menu, and go to where you enter the MAC addresses.  Put in the address for each computer you want to have access, and make sure you save them.  Once that is done, you go to the security area, and set it to ignore any MAC that is not already entered.\n\nMake sure that you have the correct addresses in BEFORE you do this.  Otherwise, you will not be able to access your router.  If that happens, simply follow the directions to reset it back to Factory Default.\n\nI find MAC address to be the most secure way to lock down a router.  There are programs that can pull out WAP addresses with time, but MAC addresses are almost impossible to capture and duplicate.
711429
http://www.apple.com/support/mac101/\nhttp://www.google.com/search?hl=en&lr=&q=site%3Aapple.com+networking+mac+os+x&btnG=Search
829747
ignore ALL the people above\n\nlog in to your router (check the manual on how to do this)\n\nthen look for a option which shows you how many MAC numbers are logged into and using the router.\n\nFirst find out ur own MAC number by the following method:\nClick "Start", choose "Run...", type CMD and click OK, then type ipconfig /all in the Command Prompt window that appears. The number under physical address is the MAC address. If multiple IP are displayed, you should look under the label "Ethernet adapter x", where x is the name of your connection (which is Local Area Connection by default).\n\n----\n\nIf you see more than one MAC address that isnt urs then it means that someone else is using ur wireless service.\nYou can block others from accessing your router if you set your router to be a secure connection by using WEP. Again, check your router manual for this.\n\n\nHope this helps\n\nPS: MAC numbers are fixed. IP addresses can change every time you can log in to your router. This is the reason why i say that look for particular MAC numbers
534221
If you have two different accounts maybe. You have to have the MAC address of the modem activated by the cable company.
959969
enable Mac address authentication, this will display the names of the devices connected to your Wi Fi, then just select the devices you want to  access your WiFi.\nNetgear 192.168.1.1\nLinksys  192.168.1.2
822818
http://mac.softpedia.com/get/Internet-Utilities/AOL-Services-Assistant.shtml
507795
dont listen to these morons\n\nif you dont know the admin name and password you can probably put the OS X discs (10.2 maybe?) in and reload the OS and form a new password. You would probably lose your info though. For additional ideas or help please see http://discussions.apple.com/index.jspa
797105
Was it connected to a router or directly to the modem?  Either way power cycle the units, modem or router, to release the MAC address from the APR table.  The unit may not be able to issue another IP address till this is cleared.  See if that helps.
195353
You need to know how IP address are assigned in this network.\n\nThe two possibilities are \n   Static -- someone manually assigned them, and is keeping\n             a record "on paper".  In this case, find that \n             person.\n\n  Dyanmic -- one of the computers on the network is a DHCP\n             server, which assigns IP addresses.  This\n             server might also be a router.   It probably\n             is also a web server and once you learn its\n             address, it probably has an interface to let\n             you see the addresses it has assigned, with the\n             associated MAC addresses.\n\nThere is no magic relationship between MAC addresses and IP\naddresses.
301599
OMG!!! call 1 800 mac? or something like that?
719231
Assuming you're on a Windows PC, at a command prompt, you can typically use either the "getmac" command or the "ipconfig /all" command to see the MAC address of every network interface you have installed on your machine.  Now if you want to know the MAC address of other devices on your network, such as your router, you can first ping the device and then look at your ARP table.  Suppose your router is 192.168.1.1, then give the command "ping 192.168.1.1" and then the command "arp -a" and you will see the MAC address of the device you just pinged.  Sometimes, you can pick up a whole bunch of devices at once by pinging the broadcast address, in the above example that would be 192.168.1.255, followed by the arp -a command.  Alternatively you can write a for loop to ping every device on your subnet in turn, and then use the arp -a command.  The command would be "FOR /L %X IN (1,1,254) DO PING 192.168.1.%X -n 1" followed by "arp -a".  The 1,1,254 is the start/step/stop numbers, so if you just want to ping devices from 192.168.1.100 to 192.168.1.200 then you would use (100,1,254) for example.  There are also many free tools you can download and use, like the trial version of wspingpro.exe, to do network scans.
835373
Hello there. Go to applications --> Utilities --> NetInfo Manager. You probably will have to authenticate the program. To do that, click on the lock on the bottom of the application (if it is locked) and enter your administrator password. When you do that, the program is now authenticated. You then want to go to security, and enable root user. It will ask you for your administrator password to enable the root user. After you enter your password, the root user is enabled. You can then logout of your account and login using the root account. If you have your login window display list of users, it appears as system administrator. If you have it set to name and password, type in root for the username. I highly recommend that you put a password on the root account. It is a powerful account, and the root account can access every file and folder on the mac. I have screenshots if you would like them. My e-mail address is bfn1986@sbcglobal.net\n\nHope this helps,\nBrian
764361
Hi I know this can be very frustrating and I sympathize with you.  The main reason that I think that your computer is not working correctly with your router and your mom's is, is because your computer's security key doesn't match the security key of the hard-wire(your mom's) router.  When the company from the wireless Internet provider sets up the network connection they set up a profile including a security key, if they key doesn't match the router key, it won't work.  A good solution for this problem is to locate your profile, it will probably show up if you click on your wireless icon (it may be located on the bottom of your screen by the time) and double click on it.  On the profile it should say something like settings and under there it should have a security passphrase.  If you know the passphrase I would re-type it and then click apply if not call your provider and explain that you need to know the passphrase to fix the problem, they should give it to you.  Once you type it in, click apply and this should fix the problem but when you are retyping them, make sure that they are the same on each computer.  I hope that this isn't too confusing and that it helps you.  Good Luck!
298680
Do a ping XXX.XXX.XXX.255. (Fill the X'es in with the first three octets of your IP address and the last one is 255).  After that do an ARP -a .  If you get more than an entry for your router and you, you are not alone and those are the MAC addresses of the offending machines.
723098
Your DNS address is wrong.
502113
When you are in the setup menu of the router, there is a Tab "Wireless". In that menu you should find another Tab called "Wireless MAC Filter". Set the wireless MAC filter on "Enable" and chose "Permit Only", then edit the Mac Filter List. Insert there all the MAC addresses of those users they can afford to use this wireless network (Caution, the setting on Enable comes last). All others are then excluded.\nAll MAC addresses can be found on the sticker of the wireless adapter, or in case of a built-in adapter in a notebook, the MAC address is printed on the bottom of the notebook.\nFurther on I would suggest to use a WEP or WPA encryption (depends on what opportunities all users PCs have in common. You cannot have both encryption systems at the same time). As the administrator you have to setup this on the router and you have to hand over this encryption code to all the legal users and tell them to keep it secret.
933232
Click  Start -> Run -> type "CMD" -> press "OK"\nMS Dos command Prompt will open.\ntype IPCONFIG /ALL and press enter.\nthis will show physical address (MAC).