No Internet Connection

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No Internet Connection

Postby 227duke on Wed Nov 18, 2009 2:20 pm

I am after a solution, in the simplest terms possible, to my problem. I have installed Mint onto my laptop. The 5 graduated bars are showing, but are not coloured in (should they be green?). Hovering the cursor shows "Wireless network connection '(my router name)' active : (my router name) (0%). When I open My Computer/System Information/Network Status, it states "You are Online". But I'm not. Opening Firefox shows I can't connect. The physical (MAC) address of my laptop is listed in the MAC adress filter of my router settings. Can anyone help?
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Re: No Internet Connection

Postby DruKe on Wed Nov 18, 2009 2:41 pm

It sounds like a radio problem.
If you get closer to the AP does the signal get any stronger?
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Re: No Internet Connection

Postby 227duke on Wed Nov 18, 2009 3:08 pm

It's not a radio issue - I'm in the same room as the router, as indeed is this (other) laptop on which I'm writing this post, which of course is having no problem. It's like there's a filter or something blocking it...which is why I checked that the MAC address was properly on the router.....
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Re: No Internet Connection

Postby DruKe on Wed Nov 18, 2009 3:19 pm

Can you from a terminal type:
Code: Select all
lspci

and paste the output here please.
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Re: No Internet Connection

Postby DrHu on Wed Nov 18, 2009 6:33 pm

227duke wrote:I am after a solution, in the simplest terms possible, to my problem. I have installed Mint onto my laptop. The 5 graduated bars are showing, but are not coloured in (should they be green?)
...The physical (MAC) address of my laptop is listed in the MAC adress filter of my router settings.

More context is needed: hardware, software
viewtopic.php?f=90&t=33561&start=0

Absolutely sure about that
    Are you using a static (manual, fixed IP) or dynamic (DHCP) setting from the route, for your client connection

Next question
Is the network really running

In terminal, check
  • inxi -F
    --short list of all OS detected hardware
  • inxi -N
    --network card only
  • ifconfig
    --is the nic (network Interface Card) UP
  • iwconfig
    --same as ifconfig for wireless
  • ping -c 4 127.0.0.1
    --is TCP/IP running correctly
  • Ping router's IP address
    --is it available to you: on the same network as your IP address for that workstation
    It is usually 192.168.xxx.xxx or similar; if it is 169.xxx.xxx.xxx then it is not a valid dhcp connection IP address
    http://forums.techguy.org/networking/21 ... dress.html
    (computer)
  • Netstat -rn
    --is the network associated with any AP(Access Point), router/dhcp server

Thirdly, a final question..
Are you behind a proxy IP address on your network, or are you not connected directly to the router, but instead are connecting via ICS (Internet connection Sharing) a la windows host mode support for people who don't use use Ethernet switches/routers (with built-in Ethernet LAN switching) or have more computers than ports and don't mind having a single host computer powered on to forward/manage their Internet connections in shared mode.
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