- Check the default gateway
- ipconfig --- find the default gateway
- Ping the default gateway
- Responses
- reply = network path is good
- timed out = cant reach, check cabling, VLANS, interface, IP config
- host unreachable = Device does not know how to reach the gateway, check routing table or NIC
- Ping external IP (8.8.8.8)
- if it works, internet is reachable
- if no work, likely a gateway/router/firewall issue
- Test DNS Resolution
- ping google.com
- if IPs work but domains dont, DNS issue
- Check
/etc/resolv.conf
- ping google.com