MAC OS X TCP/IP Configuration

STEP 1:
*Trash the TCP/IP preferences:
Drag the "TCP/IP Preferences" to the trash. (HD:System Folder:Preferences:TCP/IP Preferences)
Empty the trash.

*Reset the TCP/IP Control Panel:
Open your TCP/IP control panel. From the Apple Menu or HD:System Folder:Control Panels.
The window should look like this.....

 

The settings should be...
Connect via: Ethernet
Configure: Using DHCP Server

From the edit menu choose "User Mode" and this window will appear.....

choose "Advanced", click OK

Click on the "Options" button and this window will appear.....

Make TCP/IP: Active
Make sure the "Load only when needed" checkbox is UNCHECKED

Close the window and you will be asked if you want to save the changes, select Save.

Launch your browser.... does it connect?
Yes...... Yipee!!!!!
No...... Let's try again.....


STEP 2:
*Check the TCP/IP control panel to confirm you still don't have a valid IP address.
*Repeat Step 1
*Trashing the MacTCP DNR file with systems prior to 9.0(temporarily):
 Trash the MacTCP DNR file. (HD:System Folder:MacTCP DNR)
 Do NOT empty the trash. Just in case...

*Rebuild the DeskTop: (optional, but a good idea at this point)
How ever you like to rebuild your desktop will work. Holding down the command and option keys at start up will work, but it isn't the best way to do it.
I use a freeware utility named Trash*Desktop which deletes the files so that the system can create completely new ones. It can be found at <http://www.plugin.ch/opus/freeware>. Yes, I hear you bellowing "but I can't get on-line you moron!!!!!!" Well, once we get you back online go get it. You'll be glad you did.

*Restart your Mac and Launch your browser.... does it connect?

Yes.... Yipee!!!! You can empty the trash now.
No..... "****" there is one last thing to try before calling your ISP. Take a deep breath and count to ten.

 
STEP 3:

*Check your IP address to confirm you still don't have a valid IP address.
*Make sure that the System reinstalled a new MacTCP DNR file. If it didn't..... you've got bigger troubles and it's time to reinstall the system software.
*Repeat Step 1.... Step 2 isn't really necessary.
*Shutdown, Pull the Plug on the Modem & Restart in reverse order:
*Shutdown your Mac
*Unplug the modem
*Wait three minutes
*Plug the modem back in
*Wait until the modem goes trough it's routine and it has two steady lights
*Restart your Mac
*Check the TCP/IP Control Panel to confirm that you reset it properly
*Launch your browser.... does it connect?