Configuring an AirPort Base Station at the University of Wisconsin

Configuring Mac OS X 10.2.x ("Jaguar") for use with the DoIT Cable Modem Service (Bucky Bandwidth)

Mac OS X 10.2 includes a built-in VPN client, required for connectivity with the DoIT Cable Modem Service (Bucky Bandwidth). Several steps must be performed to configure it for its first use.

Configuring System Preferences (one time setup)

1. Open System Preferences and select the Network preference pane.

2. Ensure the Location is set to the one you will be using with the DoIT Cable Modem Service; it can be left on default setting of Automatic.

3. Set the Show: popup menu to the connection you will be using; for example, Ethernet or AirPort.

4. On the TCP/IP tab, ensure Configure: is set to Using DHCP, and enter the following addresses in the DNS Servers field:

128.104.254.254
144.92.254.254

5. Click Apply Now and quit System Preferences.

Setting up the VPN client (one time setup)

6. Open Internet Connect, in the Applications folder on your hard disk.

7. Under the File menu, select New VPN Connection Window. A box will appear that says "Your computer needs to be set up for VPN (PPTP) connections". Click Continue.

8. A window entitled VPN Connection will appear.

In the Server Address: field, enter: 12.24.207.58

In the User name: field, enter your NetID (or, if you have multiple computers, your NetID with an underscore and number appended to it as appropriate, as assigned by the DoIT Cable Modem Serivce Coordinator; for example, bbadger_2).

In the Password: field, enter your NetID password.

Click the checkbox next to Add to Keychain if you wish your password to be saved.

9. Quit Internet Connect.

Special VPN settings (one time setup)

Note: this section requires the use of Terminal to edit files. If you are familiar with editing files in a UNIX environment, you may make these changes using any editor you wish; however, these instructions use pico.

10. Open Terminal, in the Utilities folder in the Applications folder on your hard disk.

11. Type the following command:

sudo cp /var/db/SystemConfiguration/preferences.xml /var/db/SystemConfiguration/preferences.backup

Enter your administrative password when prompted. This backs up the preferences file we are about to modify.

12. Next, type the following command:

sudo pico /var/db/SystemConfiguration/preferences.xml

Enter your administrative password if prompted. This opens the file in an editor for modification.

13. A certain section of the file now needs to be found. Press control-W. Near the bottom of the terminal window, a line will appear entitled Search:

14. Type CCPEnabled and press return.

CCPEnabled will be located in the file, and will appear as follows:

<key>CCPEnabled</key>
<integer>1</integer>

Using the arrow keys to move the cursor (you cannot use the mouse), remove the 1 and replace it with a 0, so it appears as follows:

<key>CCPEnabled</key>
<integer>0</integer>

15. Using the arrow keys on your keyboard to move the cursor (you cannot use the mouse or the scroll bar), scroll down a few lines until the following appears:

<key>DisconnectOnIdle</key>
<integer>1</integer>

Using the arrow keys to move the cursor (you cannot use the mouse), remove the 1 and replace it with a 0, so it appears as follows:

<key>DisconnectOnIdle<</key>
<integer>0</integer>

16. Once these changes are made, press control-X to exit. You will be prompted to Save modified buffer? Answer yes by pressing Y (if you are afraid an error has been made, you may answer no here by pressing N, and start over at step 13).

When prompted for File Name to write, just press return.

17. Reboot your computer by selecting Restart... from the Apple menu.

Connecting to the DoIT Cable Modem Service via the VPN server

Each time you wish to use the DoIT Cable Modem Service, you must connect to the VPN server. To connect, open Internet Connect and click Connect in the VPN Connection window. The Status: line will show the time connected.

To disconnect, click Disconnect. If you would like to leave the computer connected, even if you are not using it, you may do so.