Troubleshooting Wired Network Connection Issues Flowchart
Local IP Addresses
Firewall / Router / Gateway: examples are 10.0.0.1, 192.168.1.1, 192.168.254.1
Modem: examples are 10.0.0.1, 192.168.1.1, 192.168.254.1
Local DNS: usually the same as your firewall / router / gateway
Primary DNS 1: 184.108.40.206
Secondary DNS 1: 220.127.116.11
Primary DNS 2: 18.104.22.168
Secondary DNS 2: 22.214.171.124
Primary DNS 3: 126.96.36.199
Secondary DNS 3: 188.8.131.52
Primary DNS 4: 184.108.40.206
Secondary DNS 4: 220.127.116.11
BT DNS isn't pingable.
Status info: 0800-1690199
Service status: http://www.btbroadbandoffice.com/help/sstatus/bb
Primary DNS: 18.104.22.168
Secondary DNS: 22.214.171.124
Tech support: 0870-6000-973
Primary DNS: 126.96.36.199
Secondary DNS: 188.8.131.52
Telephone tech support: 0845 458 9000 9am - 8pm Monday to Friday; 9am - 2.30pm Saturdays; Bank Holidays 10am - 2pm; (Closed on Sundays)
Service status page: http://www.thephone.coop/support/internet/servicestatus.html
Customer services: 0845 458 9000 9am - 8pm Monday to Friday; 9am - 2.30pm Saturdays; Bank Holidays 10am - 2pm; (Closed on Sundays)
Dealing With Firewalls
Restart a Linux or BSD firewall / router / gateway by pressing Ctrl+Alt+Del and waiting for it to restart.
You can login using either the web browser interface or SSH.
Dealing With Modems
To restart, preferably login through the web browser interface and choose restart or reboot. If you can't login and retstart it then power cycle it but note some cheap modems standa a chance of losing their settings when you power cycle them.
It may not be enough to reboot a modem from the web browser interface to make it work, it may need power cycling.
You can login using either the web browser interface or sometimes telnet or SSH.
Dealing With Hubs
Also known as a switch. Just turn them off and back on again.