Find Network Connection Information on a Macintosh

Network System Preference or ipconfig

Displays all current network configuration values

1. From the Apple menu, select System Preferences.
2. Click on the Network pane.
3. Click on the Advanced button and look under the TCP/IP, DNS, and Ethernet tabs.

Alterntively, you can use the command terminal

1. Open the Terminal application (found in Applications > Utilities folder).  A command prompt window will open.
2. At the $ prompt, type "ifconfig" and press Enter.

Release and Renew DHCP Address

Clear the DNS cache (releases your current IP address and requests a new one from your DHCP server)

1. From the Apple menu, select System Preferences.
2. Click on the Network pane.
3. Choose your connection service that uses DHCP from the list on the left (such as Ethernet or Airport).
4. Click on the Advanced button.
5. Click on the TCP/IP tab.
6. Click the Renew DHCP Lease button.

nslookup

DNS name lookup

1. Open the Terminal application (found in Applications > Utilities folder).  A command prompt window will open.
2. At the $ prompt, type "nslookup [Your Listserv Host Name]" and press Enter.