Using tools provided in your operating system, you can find the source of common wireless networking problems.
Checking that client received IP address and DNS server information
- Double-click the network icon in the taskbar to display the Wireless Network Connection Status window. Check that the correct network is listed in the Connection section.
- Select the Support tab.
Check that the Address Type is Assigned by DHCP. Check that the IP Address, Subnet Mask, and Default Gateway values are valid.
- Select Details to view the DNS server addresses.
The listed address should be the DNS serves that were assigned to the WAP. Usually a wireless network that provides access to the private LAN is assigned the same DNS servers as the wired private LAN. A wireless network that provides guest or customer users access to the Internet is usually assigned public DNS servers.
- If any of the addresses are missing, select Repair.
If the repair procedure doesn’t correct the problem, check your network settings.
- From the Apple menu, open System Preferences > Network.
- Select AirPort and then select Configure.
- On the Network page, select the TCP/IP tab.
- If there is no IP address or the IP address starts with 169, select Renew DHCP Lease.
- To check DNS server addresses, open a terminal window and enter the following command:
Check the listed nameserver addresses. A network for employees should us the wired private LAN DNS server. A network for guests should specify a public DNS server.
This example is based on the Ubuntu 10.04 Linux wireless client.
- Right-click the Network Manager icon and select Connection Information.
- Check the IP address, and DNS settings. If they are incorrect, check your network settings.