Windows – Internet Sharing

After some hardware shuffling, my LAN computers could not access the internet. The main XP computer with the ADSL2+ modem connected fine.

Google to the rescue – that takes me to a Knowledge Base article by Microsoft.

On the client computer
To connect to the Internet by using the shared connection, you must confirm the LAN adapter IP configuration, and then configure the client computer. To confirm the LAN adapter IP configuration, follow these steps:

  1. Log on to the client computer as Administrator or as Owner.
  2. Click Start, and then click Control Panel.
  3. Click Network and Internet Connections.
  4. Click Network Connections.
  5. Right-click Local Area Connection, and then click Properties.
  6. Click the General tab, click Internet Protocol (TCP/IP) in the This connection uses the following items list, and then click Properties.
  7. In the Internet Protocol (TCP/IP) Properties dialog box, click Obtain an IP address automatically (if it is not already selected), and then click OK. Note You can also assign a unique static IP address in the range of to For example, you can assign the following static IP address, subnet mask, and default gateway:

    IP Address
    Subnet mask
    Default gateway

  8. In the Local Area Connection Properties dialog box, click OK.
  9. Quit Control Panel.

Unfortunately, they don’t say anything about setting the DNS server address, which makes all the difference:

TCP properties
TCP properties

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