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Note that computers can be configured not to respond to ICMP echo requests. For more information see the ping(8) manual. Ping is used to test if you can reach a host.

Check if you can resolve domain names (e.g.

9.9.9.9, which is a DNS server operated by the Quad9 Foundation and is a convenient address to test with).

You can ping a public IP address (e.g.

Your routing table is correctly set up.

Your network interface has an IP address.

The cable is plugged in or you are connected to the wireless LAN. Otherwise, check the device driver – see /Ethernet#Device driver or /Wireless#Device driver.

Your network interface is listed and enabled.

To troubleshoot a network connection, go through the following conditions and ensure that you meet them: Medium-specifics are handled in the /Ethernet and /Wireless subpages. This article describes how to configure network connections on OSI layer 3 and above.