Just a basic diagnostsic checklist: # ip l
shows the links if you're missing eth0 or wlan device you need to investigate drivers: lsmod dmesg lspci lshw if the links exist, what's their status? # eth-tool <if> # mii-tool <if> show the link attributes (check duplex and speed--auto-negotiation sometimes fails causing problems--you can force the mode with these tools) # ip a shows ip assignment # ip r shows routing # cat /etc/resolv.conf shows your dns settings # ps | grep dhcp to check for dhcpcd if required, and check logs to see tthe daemon's status If it's wireless, it will vary by distro, but: # iwconfig shows wireless device status/connectivity # wpa_gui / wpa_cli shows your wpa_supplicant status if it's running (needed for WEP/WPA, there is also an alternative for WEP I believe) If you have link and an address, can you ping the configured gateway (ip r shows the gateway) If you can ping the gateway, can you ping the dns server? (/etc/resolv.conf shows you the dns servers) Can you resolve names? (test w/ping, dnsip, or diig) If so, everything should be working. If not, you may also need to look at your iptables rules. # iptables -t filter -nvL will show your your filter table, you need to understand iptables to follow it.. /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
