Ubuntu Networking :: Bizarre Wifi - All Boxes Can't Access The Internet?

Jul 12, 2010

Problem with this bizarre Wifi problem. I have searched and searched and cannot find a solutions. Unfortunately this affects 3 computers in my household. And as the resident amateur Linux tech support/Linux advocate, I will be held responsible if I don't figure out how to fix this quick. After some extensive playing around, this is the situation. I have this problem on Ubuntu 9.10, Mint 9 (based on Ubuntu 10.04) and PC Linux OS 2010.:

- About a week ago the wireless network I use stopped working. There was a major power failure on our block during this period. No idea if there was a connection. Since then, I have been able to connect, but I am no longer able to access the internet. I can ping my own IP and my router, but no website (niether by IP not URL).

- When I booted my computer in Windows, it connected to the internet. My neighbours (whose network I am using) are also windows users, and are able to access the internet without problems.
- I have found exactly the same problem on my wife's laptop running Ubuntu 9.10 and on a Live CD of PC Linux OS 2010
- I am still able to log into all other wireless networks without problems.

I am perplexed. Is it possible for a wireless network to prevent internet access to linux computers? And inadvertently? I tried disabling IPv6 (which wasn't being used anyhow), but this didn't make a difference. I also tried manually entering an IP address and other network details into the network settings.

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Ubuntu Networking :: Connected To Wifi But Cannot Access Internet

Sep 5, 2010

I've been using my upstairs computer with no problems recently up until this evening, when I rebooted it did an automatic scan of my disks, so I left it to it's thing and when I came back ubuntu had successfully booted, and had seemingly successfully connected to my wireless network as usual.

I've been through the wireless troubleshooting guide, paying special attention to sections 4 and 6 but to no avail, while I'm apparently connected, and have been assigned an IP by my router I'm unable to access anything outside my computer, including the router itself. This happened before, however I solved it by reinstalling ubuntu, and I'd rather not do that again!

output of ifconfig
eth0 Link encap:Ethernet HWaddr 00:1c:25:38:8e:de
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
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Ubuntu Networking :: Wifi Connected But Cannot Access The Internet

Sep 20, 2010

I am facing very strange problem with my Dell with WiFi card (04:00.0 Network controller: Intel Corporation Wireless WiFi Link 5100) It seems I am connected to the WiFi but can not access internet I have to disable networking and re-enable it to access internet.

Network configuration

Quote:

-network
description: Wireless interface
product: Wireless WiFi Link 5100
vendor: Intel Corporation

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Ubuntu Networking :: Cannot Get WiFi Working - No Internet Access

Jul 11, 2011

Working with a Dell Inspiron 6000 and installed Ubuntu 10.10 just to get familiar with some form of Linux. The wireless card is Dell's 1470 and the chip on the card is labelled BCM4311 so that's what I went for. At first it showed an unconnected wired NIC and for wireless it said "no firmware", but now it doesn't say anything about either one of them, it says "no network devices available". I followed the instructions here [URL] for both "STA - No Internet Access" and "b43 - No Internet Access" and when it says to go to the additional drivers menu to enable the new driver, there's nothing on the list. I then tried [URL] that guide and [URL] that one. Don't say things like "just run a qf13 on the PCL so the ergotron bus will be cleared, it's probably a thermawhatsit in conflict with the meatloaf kernel" as I won't have a clue how to execute said instruction. More useful would be "open a terminal and type 'ireallyenjoynewcarpetting' then check if the output says 'blargh 010101' ".

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Jan 15, 2011

I have install centos 5 in my dell laptop, now i want to configure and run wifi to access internet through wireless.

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Jul 27, 2010

I have a Centos5.4 64bit laptop, having an eth0 and a wlan0. I connect this wired eth0 to a wall socket to access Internet via DHCP (eg the assigned address is like 192.168.192.xx). I do not have access to the ADSL router. How can I turn this laptop into a Wifi access point to allow, say my Ipad or any wireless-only client, to access the Internet thru this laptop ?

That is, communication between iPad to laptop is wifi(ad-hoc connection ??), laptop to the ADSL router is wired LAN. The laptop need to have some bridging build in ? If you can refer me some concepts, then I can follow up from there.

Or better yet, has anybody does this before ?

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Jan 14, 2011

is this possible on 2 Linux boxes will act as a INTERNET Firewall + Filtering: 1st PC = CENTOS 5.5 functions as a firewall using iptables with two NICS 1=ETH0 connected to internet with a public ip and 1=ETH1 with ip address of 10.0.0.1 connected to the 2nd PC Centos 5.5 with squid/dansguardian with ip address of 10.0.0.2

2nd PC = Centos 5.5 functions as a squid + dansguardian internet filtering with 2 NICS 1=ETH0 with ip address of 10.0.0.2 connected to the ETH1 of the 1st PC with ip address of 10.0.0.1 and 2nd ETH1=connected to LAN (172.16.1.0/24)

does this make sense? this might be confusing but I just want to try this, to protect incoming ssh from our previous Sys admins who intended to enter the LAN 172.16.1.0/24 network. And also to confuse them that they have to pass through 10.0.0.1 - 2.

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May 13, 2009

the only error message I can find comes from "dmesg|tail"all it shows is
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Debian :: Wifi Access Point (and Internet Some Day)?

Jul 7, 2010

First time poster, some time Linux user. I've been reading and trying to create a wifi access point on my debian server. that is {intenet-router} <-> {server + usb-wifi} <-> {network users}

I've opted for this configuration as the server will become a firewall, traffic monitoring (sick of my windows machine getting hacked). I've spent a lot of time and I don't seem to have any un-clicked links in google left. I've read quite a few howtos and threads on this site and others ... I'm definitely missing something. Running: Debian Lenny (no gui)

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I've also installed hostapd, and attempted a few things in there. Long run I want to allow wifi users to access the net. But will probably need iptables etc but just want to pass this step. I've see a few howtos seem to use ath0. It's probably only a minor issues.

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Sep 26, 2010

I use openSUSE 11.1 since quite a bit and I frequently use YAST (not as root of course). However, since the problems I have to deal with while trying to install WiFi internet access I meet the following problem. I call YAST, get the small authentication screen, I give the right password, which seems to be recognized as such, but I never see YAST appearing. So I can't manage neither my hardware, nor my software.

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Mar 24, 2011

I just installed SUSE 11.4. In short - my adapter is working, authenticated on the selected AP, I can ping the AP, but I have no access to the outside world. Here's the command line output:

xaoc@FOREST:~> dmesg ...
[795.517345] wlan0: authenticate with 00:01:38:e2:39:8c (try 1)
[795.533595] wlan0: authenticated
[795.638329] wlan0: associate with 00:01:38:e2:39:8c (try 1)
[795.640960] wlan0: RX AssocResp from 00:01:38:e2:39:8c (capab=0x431 status=0 aid=3)
[795.640964] wlan0: associated .....

--- 192.168.1.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4004ms
rtt min/avg/max/mdev = 2.118/5.169/16.063/5.454 ms
xaoc@FOREST:~> ping -c 5 66.70.73.150
connect: Network is unreachable

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Dec 25, 2009

There is a new feature in Windows 7 that make u able to create a virtual WiFi and share ur internet access with many others.

I know there is ad-hoc but sometimes it has problems, for example I couldn't connect to my friend's ad-hoc network (he is using Windows 7) but I _could_ connect to the virtual WiFi he created, it appeared just like any other wireless network unlike ad-hoc

so is there any way to create a virtual WiFi and not ad-hoc in Linux?

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Dec 12, 2009

Just done a yum update and emacs's fonts seem very strange. Additionally all "" characters are displayed as a bizarre horizontally barred "W". Edit: I think it's nothing to do with emacs but with the fonts update. The default fonts are now "Baemuk Gulin", by changing them (SHIFT-LEFT_MOUSE) to, eg, Arial I can display things correctly. But I think the times fonts are now missing. Very strange.

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Ubuntu Networking :: The Phone Can Access The Internet Through The Computer Unable To Get Access To Https Sites, Like Webmails

Dec 31, 2010

I managed to configure my W890i phone to get access to internet through an ubuntu-based computer. It's very easy to use the phone to give internet access to the computer, but the opposite is quite more tricky. For that I've done the following

----On the phone---

-Set the USB network option to "through computer", so that the phone uses the computer's internet connection and not the opposite.

-Decide and set "Shared Network" parameters: user, pasword and workgroup.

-In "conectivity-> internet connection" set "allow local network" to "yes"

----On Ubuntu 10.04---

-Install samba, samba-client, smbfs, smbclient, firestarter and dhcp3-server

-Configure Samba (System-> Administration-> Shared folders): same workgroup as in the phone, add new user (the phone), passwd this new user. In my case the user was called "w890i" and the password given was the same.

-Once the phone is connected to the computer through USB (then select "phone mode"), a new connection appears in NetworkManager: usb0.The aim is to create a shared network that gives internet access to this device. Edit the IPv4 parameters of this new connection, set them to Manual and give an IP adress (192.168.0.1) and a subnet mask (255.255.255.0); the rest of the fields are left empty.Connect this network.

-Set firestarter to use dhcp3: sudo ln -sf /etc/init.d/dhcp3-server /etc/init.d/dhcpd

-Launch firestarter and follow the wizard. Set "allow internet shared connection", choose the device for the primary internet access, and then the device for the shared network (usb0). Then change the settings for firestarter: activate DHCP for local network, set IP to the one we gave before (192.168.0.1).

-Open dhcp3-server config file sudo gedit /etc/default/dhcp3-server And set INTERFACES="usb0"

-Set the policies of firestarter: in incoming connections, allow connections from the IP adress given to the phone (192.168.0.1). Then add rules for the ports that need to be open for this connection. I opened HTTP, HTTPS, SMB, SMTP, POP3, IMAP, IMAPS, DHCP for all the connections in the local network.

-Apply policies and start the firewall.

------------

After all this, the phone can access the internet through the computer. Two problems appeared:

1. I couldn't get access to https sites, like webmails. The phone gave a "communication error". But then I tried with Opera instead of the browser built in the phone's firmware, and I could finally get to https sites.

2. I couldn't retrieve mail, neither POP nor IMAP nor IMAPS. I thought it was a firmware problem again, and I tried out several mobile phone email clients written in java, but none of them worked.

So this is at the moment the problem. If I connect from the phone to the internet directly through 3G, the email clients work for all my accounts. I don't think it's a firewall problem, because the ports are opened for this connection

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Ubuntu Networking :: Couldn't Access Internet Via LAN With Could Access With Windows 7?

Jul 6, 2011

I connected my laptop running with Ubuntu 11 in the LAN but I couldn't access internet.But I could ping to the other computers connected in the LAN. I tried the same thing with windows 7 in the same laptop and I could access internet.

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Ubuntu Networking :: WiFi But No Internet?

Feb 17, 2010

I am new to Ubuntu, but because of my familiarity with Vista's Command Prompt, I was able to adapt easily.But there was a problem. My WiFi card didn't work. As it turned out, I was missing drivers.So I plugged into my dad's Gigabit Ethernet port and got ndiswrapper.That worked well, and my wireless card is working. The problem is that I can access the network in my house, but not the Internet. Everybody else (running Windows) can access the Internet wirelessly. But I have to steal my dad's wired work line. Is there any way to solve this? info about my computer, here it is:

OS: Ubuntu 9.10 Karmic Koala
Computer: (Laptop) Dell Vostro 1000
Wireless card: Dell 1390 wireless
Router: Netgear... some model or another

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Nov 2, 2010

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Clicking on the sidebar icons when at the netbook is fine. Furthermore, over VNC I can click on one of the sidebar icons and drag it, but can't click to open!

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Jul 3, 2011

I am new to ubuntu, Installed it somefays before and getting used to it. I want to share the Internet from my ubuntu box with 2 Win7 boxes and a through a switch (have 2 network connections, eth0 - LAN and eth1 - Internet) . Searched a lot i google and got some Idea about the process.

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Ubuntu Networking :: Cannot Connect To Internet Via WIFI

Jul 27, 2010

i am tryin to connect to internet through wifi. for this i have to connect to router first and then open the web browser to put UN and PW. I am using ubuntu. i know UN and PW. I can connect to router but my(any) web browser cannot open the authentication page.

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Aug 12, 2010

I have a 2wire card and gateway how do I install it and connect to the internet?

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Ubuntu Networking :: 10.10 - No Wired Or WiFi Internet

Nov 10, 2010

I just installed Ubuntu 10.10 tonight on my Acer Aspire One D250 and have no internet at all. I know both the wireless and wired internet work, as I am dual booting WinXP as well.

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Ubuntu Networking :: Wifi Connects But No Internet / Why Is So?

Nov 23, 2010

Let me start by saying that I am new to ubuntu, and that I always use forums as a last resort.

I installed ubuntu 10, and immediately after the Wifi card deected my network name, and actually connected to it, but then I opened up firefox and....no internet.

Since then I have been trying to fix this problem, and after some research I found out that my card (PCI Cwp-905) is RT2760 based, and I downloaded the linux RT2760 drivers for it.

The driver folder contained a readme file with commands you should enter to install it, and other setup files.
The problem: every command I typed in didn't work. I tried "make", and then "sudo make", but just got permission denied each time. I am now at a dead end. (Please note that I changed my directory to the folder location before doing this)

Does anyone know what I am doing wrong? If you want I can attach the driver files.

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Dec 12, 2010

The place I will be staying at (Japanese Guesthouse) only offers internet through cable. What I'd like to do is be able to connect my other devices through wifi (Cellphone for example) to the Ubuntu machine connected through this ethernet cable in order to access the internet.I've searched for a good hour but I'm getting extremely confused about the gateways, bridges or whatever else people suggest. Most of what I've been able to find actually only covers getting internet through wifi and then sharing it through lan (I'm trying to achieve the opposite).

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Ubuntu Networking :: Can't Connect To Internet On Wifi Or Wired?

Mar 20, 2010

I've been running ubuntu for about 6 months, so i'm still abit of a newbie at linux but heres what im having issues with:I'm having troubles connecting to the internet on ubuntu, i have no problems connecting on xubuntu on the same machine. I can connect to my network but i cant access the internet on firefox or snaptic or any of that, but the weird thing is i can successfully ping address' in the terminal. I can also connect to my router config page in firefox using 192.168.0.1.

My internet worked perfectly about a month ago on this ubuntu install, so i cant figure out what i did to make it stop working. I think it may have something to do with the/etc/resolv.conf file because it only exists as /etc/resolv.conf.tmp and when i run "sudo dhclient wlan0" (or eth0) it says:

ubuntu@ubuntu:~$ sudo dhclient wlan0
Internet Systems Consortium DHCP Client V3.1.2
Copyright 2004-2008 Internet Systems Consortium.

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Apr 21, 2010

I've been having 2 issues with my internet connection on ubuntu for as long as I can remember, I've tried updates but they haven't seemed to work so great and am pretty fed up with this. So I have a Netgear wg111t wireless usb dongle which I got working through ndiswrapper. The 2 issues I am having are:

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Ubuntu Networking :: Get Internet Connectivity To Phone Through Wifi?

Apr 21, 2010

I have an iphone, I am trying to get internet connectivity to that phone through wifi. I dont have a wifi router. But i do have a laptop with wifi card. I am connecting to internet via cable modem. In win7 I used to create an accesspoint and do the ics from ethernet card to share via wifi card. It used to work perfectly.

Now as I am sing ubuntu, i want to do the same. I have intalled firestarter, and shared the internet connection through wifi card(wlan0).After this I created an accesspoint using the gnome network applet. Now i can connect my ifone to ths accesspoint. But there is no internet connectivity in my fone.

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May 12, 2010

I'm on Ubuntu 10.04 and I'm having problems with internet speeds on wifi. I have tried the two available networks on my university campus and both of them are very slow with 10.04. I'm not having problems with Windows 7 running on these networks. Although, the wired network works perfectly fine, with normal speeds. I've looked around for help but I could not find anything specific to this problem.

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Ubuntu Networking :: Guide To Use Share Internet Over Wifi?

Jul 5, 2010

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Sep 14, 2010

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Ubuntu Networking :: Wifi Works But No Internet Only On (10.04) Side

Oct 24, 2010

Wifi Works, but No internet When I'm directly connected to the Wifi router, via LAN cable, I have internet (this is how I'm posting now) I have a desktop computer, this is also the same problem. Because of this it hasn't updated to 10.04 yet. Its still at the version previous (9.??). Might be relevant. This problem began when my wife's Mac had an update that killed her Wifi access, and we had to reset the Wifi Router. She didn't change anything, we just re-inputed all the data as before (passwords, ID). Since then I can't access my internet even if I can connect to the wifi.

Other Observations In the office, my Laptop's ubuntu side has no problems with accessing Internet through the wifi. My Windows side is unaffected (both Desktop and Laptop). One time I can connect, but when that happened on that same day she can't. Possibly a fluke or coincidence. I read the post of a similar matter, where the person's Empathy still works. when I tried check if that was the case with me, after getting my Empathy to work it began to work again. But this hasn't worked in a succeeding attempt. Below is my system information if it may be relevant.

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