Ubuntu Networking :: Connected To Wireless Router, But Can't Connect To Internet?
Aug 2, 2011
I think something weird is going on. On a fresh installation of 11.04, I seem to be connected to my router just fine, but I can't reach the internet or anywhere else on my network. Anybody see my problem from what I've posted? The computer is only connected via wireless (so I don't know why eth0 would be connected as well). I can't think of what I'm missing...My system seems to be connected to my router on two interfaces. "ip addr" gives:
Code:
1: lo <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
[code]....
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Mar 1, 2011
This morning my Ubuntu 10.10 Meerkat desktop suddenly lost internet connection, but stayed connected to my netgear router. After the usual "tried turning it off and on again" methods didn't work, I booted into my Win Vista partition to find that connected no problem. I have another Ubuntu netbook and a Windows 7 laptop in the house as well as an Android. These all connect fine. It appears to be just the desktop Ubuntu.
I can ping my router 192.168.0.1 and log into it's UI via browser. I can also ssh to the box. My router does not do any filtering or blocking. I've tried disabling the firewall and changing the nameservers in /etc/network/interfaces and dhclient.conf as well as the network manager. The network card is a Belkin 54g but I can't remember the exact model no. it was bought years ago.
Code:
$ping www.google.com
PING www.l.google.com (74.125.230.115) 56(84) bytes of data.
^C
--- www.l.google.com ping statistics ---
30 packets transmitted, 0 received, 100% packet loss, time 29004ms
Code:
$traceroute 74.125.45.100
traceroute to 74.125.45.100 (74.125.45.100), 30 hops max, 60 byte packets
1 * * *
...continues to...
30 * * *
When I do a restart of the networking service it spits out the error:
Code:
Ignoring unknown interface wlan0=wlan0
However, as I said the wireless itself works.
/etc/network/interfaces:
Code:
auto lo
iface lo inet loopback
iwconfig:
Code:
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bg ESSID:"haters gonna hate" .....
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Sep 14, 2010
So I installed 10.4 on a new Toshiba Satellite L645DWhen I connect to my wireless at home, the Network Manager shows that I am connected but I can't reach any websites via ping or firefox. I also can't ping my router. I also don't have wired access working at all.iwconfig shows connected to correct ESSIDI can ping localhostcan't ping google:
Code:
ping: unknown host www.google.com
can't ping my router (192.168.2.1):
[code]....
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Jul 30, 2010
I connect my internet using pppoe to may DSL modem with bridging mode, and it goes fine until I try to put a wireless router between my PC and the modem. After I configure both modem and the router, I can run my wireless network fine by connecting it from a laptop, but my PC is unable to reach the modem at this configuration.
PC has address 192.168.2.100
Router has address 192.168.2.2
Modem has address 192.168.2.1
all with netmask 255.255.255.0
With bridging configuration in modem and automatic detect configuration in the wireless router, the wireless network run well, except the PC cannot ping the Modem saying that
Code:
root@firefly:~# ping 192.168.2.1
PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data.
From 192.168.2.100 icmp_seq=2 Destination Host Unreachable
Looks like my PC, which has Slackware 13.0, don't know how to reach the modem even they are physically connected.
1. how can I configure the modem, PC, and router so that the PC can reach the router? Do I need to do add route gateway from the PC?
2. How can I configure internet connection from the PC (before I use PPPoE)?
3. How can I configure the modem, PC, and router so that the wireless network is on?
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Oct 27, 2010
At work, we (like almost everyone) are still full-on windows. I am currently trying to get away from windows because I am not a fan. my current windows machine (different from my Ubuntu machine) is accessing the wireless network fine, and there are no obvious problems there. Also, my Ubuntu machine can access my wireless network at home, so I know there are no driver issues. I set up the connection for the Ubuntu machine, and it seems to be connecting OK. I can ping internal IPs and by all statuses, the connection to the router is functioning. However, when I attempt to load a web page or ping a domain or external IP, it fails. I tried to ping the IP, thinking if that worked, it's probably the DNS, but pinging both domains or IPs fails. I have looked around at forums and posts, but none of them seem to match my issue (that's probably not true, but I am struggling to see the commonality).
Here are the results of "netstat -r":
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.45.0 * 255.255.255.0 U 2 0 0 wlan0
link-local * 255.255.0.0 U 1000 0 0 wlan0
default 192.168.45.5 0.0.0.0 UG 0 0 0 wlan0
And here is "ifconfig":
wlan0 Link encao:Ethernet HWaddr 74:f0:6d:XX:XX:XX
inet addr:192.168.45.49 Bcast:192.168.45.255 Mask:255.255.255.0
inet6 addr:fe80::76f0:6dff:XXXX:XXXX/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
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Oct 4, 2010
AT&T will not help. I am trying to connect with Cable (CAT5). When I try to configure my network card with YaST here is the message received. "Unable to configure the network card becasue the kernal device (eth0, wlan0) is not present. This is mostly cause by missing firmware (for wlan device) See dmesg output for details"
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Feb 12, 2010
I have just installed Linux Mint 8 to an Asus A6000. My problem is that the computer won't connect with my wireless router. I have tried with MAC-adress and such, but still no respons. I also tried to connect with a cable to my modem, but no response there either.
I think I may lack some drivers, to what I think is Broadcom b43, but I am not sure. I tried to download the drivers on my other computer, and transfered them to the Asus. I managed to install 2/4 drivers, but on the two others, I get this message "Failed to fetch ... Couldn't reach archive.ubuntu.com"
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Oct 27, 2010
I have a telephone connection of 1 mega internet modem huawei mt 880 SmartAX my desktop computer is connected via an ADSL PPPoE.I use Ubuntu 10.04 in Spanish and want to know how to connect a WiFi router TP-LINK TL- wr942nd to provide wireless Internet to other 2 PC, a desktop with a plaquet wireles G CNet CWP-854 and 500 series notebook olivetti olibook. The issue is that when I connect the router I can not even go online and do not know how to operate the network, I can not even connect the desktop to my internet provider
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Feb 21, 2010
just installed Ubuntu Netbook remix on my acer aspire one, and come across a problem Ive never faced before. Im able to Connect to my router (and access it through the internal ip address) but as soon as i try access anything outside of my network there is nothing!
This i found odd as first i thought it might have just been my Routers problem, but seeing as all my other computers were connected to it with no problems (wired and wireless) I quickly traced the problem back to the laptop.
After this i decided to see if after a simple update would fix the problem. so i connected it up through the Ethernet port once again it connects to the router but no internet! I have tried everything in my knowledge, but with no success!
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Sep 26, 2010
I am connected to my wireless network but can't connect to the internet. I have searched the ubuntu forums for solutions but none seem to work for me. I can post terminal outputs if required (I know that much).
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Sep 1, 2011
I'm running a Natty machine wired to a TP-Link router (TL-WR841N) with additional Ubuntu and Windows machine on WiFi. Recently I've had some problems with connectivity on the Natty machine. Connectivity is fine as far as the router, but not beyond it. This applies to all browsers, Software Center, Aptitude and anything else you can think of. Now, normally at this point I would call my ISP, but the thing is, all other machines have connectivity. I've checked the cables twice and anyway, if it were them, I wouldn't be able to ping the router. Router has ping functionality to outside and it's working, have tried ubuntu.com and google.com. Also, connectivity between the wired and wireless machines is fine, pings are flying across the network beautifully.
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Mar 22, 2011
Heres the set up I have: one eeepc running ubuntu netbook. with a usb wifi dongle, this is connected to a parabolic antenna i made out of pizza boxes and tin foil. One fujitsu laptop running ubuntu 10.10. the eee connects to the internet via the dongle. then the laptop connects to the eee. I set this up by using network manager. I created a new wirless connection and called it "UbuntuAdhoc". The on-board card connected to this without issue and the laptop was able to connect to the new wireless broadcast by the eees on-board card.
This worked perfectly untill I rebooted the eee. Now the eee is unable to conect to the internet if the on-board caard is conected to "ubuntuadhoc". also the dongle now wants to conect to "ubuntuadhock" too.
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Aug 1, 2010
My son lost his USB Wireless stick for his Computer. I had thought I heard that if you had a second wireless router, you could use it somehow to detect the wireless router you have already set up in your home (like using a wireless card)? Is this what Ad-Hoc is? Either way, can this be done and if so how? I use a WRT54Gx2 Lynksys router and have a TRENDNET TEW-432BRP wireless router and also a spare D-link DI-514. I use ubuntu 10.04, and also wanted to know if I connected one of the router to his on the LAn port could he connect msaybe through an Ad-Hoc on my local computer here? He uses XP on his. I'm a newbie to linux and networking in general.
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Apr 27, 2010
I had previously been having loads of problems getting my wireless printer to work with Linux [http://ubuntuforums.org/showthread.php?t=1453697]. Everything is working fine now. However, something that confused me is that whenever I tried to ping the printer _before_ I got it working, it would fail with a _different_ IP address. That is, the command 'ping x.y.z.3' would fail with a message saying it was unable to contact 'x.y.z.2'
Now I am looking at my router - for something unrelated - and I've noticed that rogue IP address shows up in the list of connected devices. It has a MAC address but for the device name it lists "<unknown>". Should I be concerned about this? how to figure out what this device is?
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Apr 6, 2011
I am trying to setup a dhcp server for my internal network. I have two NICs, a modem, and a wireless router. I have my server connected directly to my modem which is providing me with Internet access on eth1 and is working fine. I have dhcp and dns setup on eth0 which is connected to my router. The router shows that it is connected to the Internet but when the router gives a client computer an IP address, the client is unable to connect to the Internet but can connect to the router. I will post my configuration files below with my current configuration.
[Code]....
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Dec 1, 2010
I had an ATT "2Wire" modem/router that was working but connection to the Internet was often poor. An ATT technician came to my home and swapped out the modem/router for the identical model. I changed the ESSID and WEP code to match the new unit and everything was fine with the following wireless units: a wireless desktop, two cellphones, three wireless Archos tablets, and a couple of e-reader tablets. So all seemed to be fine wirelessly. However...
My laptop (SuSE 11.0, KDE3) simply won't connect no matter what I do. I changed the ESSID and WEP info in the lappy exactly as was done with the other wireless devices named above. But no good. The lappy does see the modem/router (a good, strong signal appears in KNetworkManager). But it seems as if the modem/router is rejecting the lappy's attempted handshake using the new ESSID and/or WEP information.
I thought that perhaps there was something wrong with the lappy's wireless card, so I took it to a Starbucks to see if it would connect there on an open network, and it did without problem. So the lappy's wireless card appears to be working fine. It just won't talk to the encrypted modem/router at home. Here are the settings on the lappy. Hopefully something here is easily identified as the culprit. With all the clicking I've done it certainly is possible that I ticked something that should not have been ticked and just don't realize what I've done.
Network settings screen:
Global options tab:
Network setup method: user controlled with Network Manager
Change default route via DHCP (ticked)
[code]....
Why won't the new modem/router which is exactly the same as the old one except for the ESSID and WEP work with my lappy yet it does work with a bunch of other wireless devices?
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Feb 16, 2009
This is my basic setup:
[URL]
I don't know how to get the wireless router to connect to the other wireless router so I can use internet on my computer. How do I achieve this wireless connection?
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Nov 7, 2010
Im using a laptop with a wireless card inside it is a Realtek RTL8187B network adaptor. I go to wireless connections in the toolbar at the top of the screen and click on my internet modem and it says its connected. So I go to firefox and it brings up google. I try and do a search and it says something and at the bottom of the page it displays a button that says "Try Again". Im booting ubuntu from the cd drive so its not installed on my computer what should i be trying?
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Jan 11, 2011
I have an old GX 159 Dell Desktop I tried to install Ubuntu 10.10 on it and it worked like charm the problem is when I connect my Alfa 1 wireless adapter and connect to the network it won't let me connect to the internet. Well I have been succeeded to connect to the weather center, but I can't update or open the Internet even if I have been able to open Hotmail.com after 2 minutes it won't open anything after that
Note: I didn't install the driver for adapter and I don't know how to do it because I tried before and I failed adding I used it on more than one distro. By the way it works perfect on Windows?
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May 5, 2011
wlan0 Authentication capabilities :
WPA
WPA2
CIPHER-TKIP
CIPHER-CCMP
Those are my authentication capabilities, obviously. I am using a WEP encryption for my wireless router and according to this, it will not allow me to connect. Is there anyway to allow that? The wireless card works just fine in Windows, even on the same network encryption type. Using a Intel Wireless/Pro 4965 ag. Note* this is my mother's router and whatnot. She won't change it the encryption type.
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Jun 30, 2011
I installed a Tenda W322P wireless card in my dual-boot PC running both Windows XP and Ubuntu 11.04. The card worked straight out of the box on XP, but does not function correctly under Ubuntu. My apologies for any missing/irrelevant information, I am having to post this from the Windows boot so the Ubuntu settings are not directly available at the same time as internet access.I followed the process detailed here htURL...to install and configure the driver (I believe from reading other sites that this card is the Ralink RT3062 chipset), blacklisted the original RT2860 driver that was in use (couldn't even get the card to scan for wireless networks with the default driver) and restarted the interface.
Since then, sudo iwlist scan can find my wireless router but when I attempt to connect to it, it seems to enter a loop of requesting the WEP key then pausing for a while before re-requesting the key. I know I have the key value correct because it is copied and pasted from the same text file I used to copy and paste into the passkey field on the Windows boot. Attempting to connect to the router using Ubuntu also has the rather unfortunate side-effect of crashing the wireless router, killing off all other device connections until the router has been reset.
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Nov 9, 2010
I upgraded to 10.10 the day it came out, and haven't had any problems with internet stuff. My wireless card works without any proprietary drivers. Last night, the computer stopped connecting to the internet. I am still connected to my wifi network, but I can't do anything online. I had assumed that my internet connection was just down in general, and tried resetting the computer, shutting down the computer and then turning it on again, and rebooting the modem, but then my Xbox connected, and my laptop running 10.04 connected, so I'm confused as to what is going in. Any ideas?
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Dec 27, 2010
I am running Ubuntu 10.10 on a Dell Dimension 4700 desktop computer. I just upgraded to 10.10 from the previous version after getting my D-Link wireless adapter back after loaning it out. My internet now won't stay connected. I can connect when I firstrn on the computer, with after 2-5 minutes it drops the connection and gives me the "Wireless Network Authentication Required" prompt. It won't connect again without unplugging the adapter and plugging it back in.I borrowed a Belkin wirelss adapter to try it, and it does the exact same thing. PLEASE can someone help me, I really need the internet up on the computer(Also, when I first got the adapter-- while running the old version of Ubuntu-- it would not recognize or connect at all and I spent 4 hours messing with drivers and settings to get it to work, which it did flawlessly. Until I upgraded.)
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Feb 22, 2011
I've had ubuntu installed for a bit now and I want to start using it as my main OS, but the wireless internet will not stay connected. It will connect at first and if I'm lucky it will stay connected for around 15 - 20 minutes. I have a toshiba laptop with an AtherosAR5007EG internal network card.
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Aug 26, 2011
I have installed ubuntu 10.04 and STA wireless driver. I am using a wimax modem, the wireless is connected (have IP addresses) but I do not have access to the internet.I also have installed a windows XP as a guest OS (ubuntu is the host) on vmware. By using a bridged network connection, I am able to access internet. So I guess the problem is related to the ubuntu wireless driver.
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May 23, 2010
I'm a beginner in Ubuntu, I'm using Ubuntu 9.10.
Currently using a Dlink GLB-802c router and using a ADSL connection. I try to connect to the Internet but it is unsuccessful. Ubuntu is not indicating my router when I connect to the PC.
My PC is P4 and using USB to connect to internet, PC haven't a Ethernet interface.
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Jan 3, 2011
- CAN connect to other computers - ssh and vnc over the home network (via D-link 524 router).
- CAN get an IP address via DHCP
- CANNOT get internet connections - including router at 192.168.0.1
- CANNOT even ping router (but I get an IP address - weird)
- Other computers on the network CAN access internet
- Live CD could not access internet
results of ifconfig
Code:
Code:
I am wondering if his ISP could be doing this - he has received a warning letter about bitorrent. Could the isolate a single computer behind a NAT router?
This is the results from dmesg:
Code:
I have tried:
- to set proxy settings as "Direct internet connection"
- disconnecting power to (including 30 sec wait): modem, router, computer + unplugging ethernet from computer
- Live CD (he only had an old one 7.10) which also didn't connect to internet, but as I am remote, I couldn't do any more. We are downloading a 10.04.1 iso for him to burn tomorrow, and will try that again.
- Uninstalled Crashplan which was the last software that we installed (and it was working ok).
I am currently ssh'ing into another computer on the network that IS working, and then ssh'ing into my Dad's computer - including a VNC session (tunneled through both machines and router).
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May 4, 2011
i recently connected this router to mahh modem..http:[url]....before router connection i was able to connect to internet via "pppoeconf command" but now i am not able to connect to internet from ubuntu ..i am still using lan cable coming out or router to connect it with pc..
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Sep 3, 2011
I installed Fedora 15 today and after a few very long hours finally got the broadcom driver to work and my laptop is now connected to my router. Yay! But now when I try going to a website in firefox it says server not found. I can ping anything inside my network but when I try to ping outside the network, for example google, it says ping: unknown host google.com. So I thought it might be a DNS problem but the network settings point to the router for DNS so I'm not sure what else could be wrong. All of the other settings look correct.
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Dec 11, 2010
I have Ubuntu running from my flash drive. My wireless connection shows good connection to my router and other routers I have tried; however, when I open Firefox or chrome there is no internet connection.
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