Ubuntu Networking :: 3g Internet Stop Working When Connect Wi-fi Or Lan To Router?
Feb 12, 2010
Useing gnome network manger. I thught that is DNS resolve problem, and wrote in linksys router the same DNS as 3g huaweii modem use. Steel the some result. NO INTERNET. Change for static ip in router and try use the same gatway , but steell can't use connected at the same time to internet with 3g and local router.
Only one devace at the same time, Router have no any acces to internat. SO why 3g internet stoping working after connecting router to LAN ports? Has it some thing to do with subnet or ip range and routing table?
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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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Sep 1, 2010
I am trying to connect my desktop to my laptop over a non-internet connected LAN, but when i enable the LAN connection on my desktop (the one with the wireless) its internet stops working.
it is a very similar problem to this except that i am using ubuntu for the machine with the two connections.
right now i have my wireless on the 192.168.1.* address space, while the LAN is to be on 192.168.5.*
note: my goal is not to share internet with my laptop, just be able to connect to it and the internet at the same time.
desktop: ubuntu 9.10 , wireless and LAN
laptop: windows xp, LAN only
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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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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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Jan 7, 2011
After forgetting my wifi router password, I had to reset and reconfigure the router. I enabled WEP, and after I typed the password, the computer now recognises it automatically. But I can't connect to the internet no matter how long I wait. (The wired internet connection works fine.) How can I get the wifi to connect to the internet?
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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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Apr 27, 2010
I cannot connect to internet. I just installed Fedora 12 w/ the Live CD and I have a Linksys WMP54G Wireless Card (v4.1 I believe) and it apparently installed fine upon install of fedora. It will not thought connect to the internet. It reads my connect (NETGEAR-2.4-G), my router is a Netgear WNDR3300. It worked perfectly fine on Windows XP. Like I said, it picks up my wireless connection. But when I go to connect it attempts to connect for like a minute or two then goes back to not connected.
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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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Apr 29, 2010
I am trying to set up a basic router. I am running ubuntu server 10.04(just installed it today!) I have a verizon aircard(mobile broadband card) that is connected via usb. I am using wvdial to "dial-up" the connection. This works just fine and gives me a device on ppp0. There is a single lan connection on eth0 set up as a static ip address under /etc/network/interfaces. I don't even have any firewall running yet. For whatever reason, I can only get out on the internet when eth0 is set to get its ip address through dhcp. When I set it up with a static ip, I get for example:
$ping 4.2.2.2
From 192.168.1.1 icmp_seq=1 Destination Host Unreachable.
$ping google.com
ping: unknown host google.com
If, however, after I have booted and the wvdial has been started, I set up eth0 as dhcp, run /etc/init.d/networking restart, set it back as static, run /etc/init.d/networking restart again, all work well. When I reboot the system with the static ip on eth0, and connect to wvdial, I get no internet again.
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Aug 20, 2010
My internet works fine if I plug directly into the modem, but if I go through the router either using ethernet or wireless it doesn't work. I can access the router perfectly when using wireless and change settings and all that but cant access the internet. From what I've read it isn't a DNS issue because I cant get a result from pinging an ip, so I think it may be something firewall related but I'm unsure.
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Dec 5, 2010
I have just installed ubuntu 10.04 using the wubi installer to dual-boot my machine. Under ubuntu, I am not able to connect to the internet or my router. Everything works fine under windows. I have tried to find relevant information in the forums, but nothing seems to work for me. I have tried disabling ipv6, setting a static ip, but no go. ifconfig shows no IP, dhclient results in no DHCP offers and pinging my router's IP results in Network is Unreachable.
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Apr 1, 2011
I have 2 pcs at home. I dont have a switch so I can connect only one PC at a time to my adsl router/modem for internet access. In the past I had successfully connected the two PCs (NIC to NIC) to each other using the same ethernet cable which was supplied with my dlink adsl modem.
Recently the motherboard of on of my PC went bad so I replaced it with a new one. The problem is when I connect the two using the same Ethernet cable they won't connect. The lights on the Ethernet port won't light up. I can still connect both of them to the adsl router (NIC to Router) (one at a time).
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Jan 31, 2010
I've only been using linux for a few days so I don't know all the tricks. I'm pretty savy configuring windows networks however.My adapter is (according to windows) a: CNet PRO200WL PCI fast ethernet adapterLinux says it is a: 21x4x DEC-tulip compatible 10/100 EthernetI do seem to be getting an ip address from the DHCP router, but I cannout ping any other ips or connect to the internet.I've tried a bunch of different options, switching things back and forth, but it still doesn't work, and honestly i don't even know what some of the options mean.
ALSO, if this helps:
paladin:~ # ifconfig eth0
Eth0 Link encap:Ethernet HWaddr 00:08:A1:03:3C:99
[code]....
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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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Apr 24, 2011
running ubuntu 10.10 on a toshiba laptop recently the wireless Internet stopped working from our netgear router, it still works for the Ienova laptop and emachines desktop using the router but this laptop will not work wirelessly internet cuts in and out on this laptop when on wireless when it didn't previously do so it reads a connection but will not load up web pages unless hard wired in with an ethernet cord.
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Nov 6, 2009
I have a desktop PC running Ubuntu 9.10 and Windows 7, and a Eee PC 701 laptop running EasyPeasy Ubuntu 9.04. I'd like to connect the desktop to the laptop with a wired connection (eth0), then the laptop to my ADSL router using wireless (ath0).
I have a crossover ethernet cable (I bought on ebay). I have set up my laptop with a static IP address on my LAN and it uses OpenDNS.
I have added this to /etc/sysctl.conf on the laptop:
net.ipv4.ip_forward=1
Then I tried this on the laptop:
sudo iptables --table nat --append POSTROUTING --out-interface ath0 -j MASQUERADE
sudo iptables --append FORWARD --in-interface eth0 -j ACCEPT
This is a variation on what I found on other sites describing how to set up a router. I don't understand iptables very well, but I gather that the above two lines should set up forwarding so that traffic from my router to the laptop will be forwarded to the desktop, and vice versa.
But this doesn't work. The connection doesn't even establish between the laptop and the desktop.
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Sep 15, 2009
I have a Dell PowerEdge 1650 server with 3 NICs in it. I am trying to use one NIC (eth0) to connect to the internet, the second NIC (eth1) to share the internet connection to a LAN, and the third NIC (eth2) to connect to the LAN.
It is running Ubuntu server 8.10
The problem that I'm having is that NetworkManager (version 0.7.0) keeps setting eth2 as the default connection, and then I don't get any internet at all from the server.
My main goal is to be able to share files from the server to computers on the LAN. The secondary goal is to have a virtual machine hosting a Halo server, connected through eth2, so that it can host LAN games. But that is a secondary goal after I get the connections to work.
I've been looking around and finding other people who have done bits and pieces of this, but not the whole thing. I had been hoping to simply use the NetworkManger, but I don't mind editing config files.
Also I can't seem to find any good instructions on editing the /etc/network/interfaces file. The man file is incomplete, and everything seems to point back to the man file.
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Jul 17, 2010
installed openSUSE 11.3 and round that both wireless and ethernet connections could connect ok to my router but couldnt access the internet. I think its a bug because I didn't have this issue in previous versions of openSUSE.
The solution is to go into the ip settings in the wireless configuration, select the option to manually assign ddresses (not DCHP) and
- enter the ip address of your router in the default gateway and DNS server addresses
- manually assign an ip address to your computer rather than have the router do it
- it has to be in the same range as your router -n normally 192.168.1.x where x can be any number not already used.
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Feb 21, 2011
I am running Slackware -current. Every thing was working fine and suddenly it stopped. I am unable to connect to the router or the internet. Which is a problem since I'm using it right as a server.
[Code]....
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May 31, 2010
I'm using D-Link GLB-802C router to connect to internet, It has one Ethernet port and USB port. I want to connect to internet in ubuntu using USB port. My PC is P4 machine and it isn't a Ethernet interface. My router's driver CD includes usb drivers to windows 98, xp OS only. I want step by step guide to setup the internet connection in ubuntu. I'm from sri lanka and i using SLT ADSL connection.
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Aug 24, 2009
When I install 99% of Linux distros they all come up as wired eth0 connected but the browser cant connect to the net. I found out it was because it cant find my Voip router if I disconnect the voip router they work fine. I am using NetCom V300 telephone router yet PCLinuxos 2009 has no problem with this issue. I have to use my Voip and also want to use the other 99% linux distros.
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Jan 13, 2011
I'm using ZyXEL 660HW T2 router for my internet connection. The router is already set up.., my connection is working on winXP(just plug the cable and that's it). How to connect my suse 11.2 to internet? I tried to setup in YaST --> Network Settings
********************************** Code: OUTPUT OF "lspci":
linux-1c1l:~ # lspci
00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 02)
00:01.0 PCI bridge: Intel Corporation 82G33/G31/P35/P31 Express PCI Express Root Port (rev 02)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01)
00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 01)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01)
[Code].....
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Jul 27, 2011
my wireless will simply stop working after each new webpage loads. Whats strange is that it will not disconnect me, and the wireless icon in the top right will continue to show that I am connected to the internet. I am currently tethered to my phone and the internet is working fine. Once If I switch to my regular wireless internet and disonnect and reconnect to my home router then the webpage will load fine only once then after that it will not work again until I disconncet and reconnect again.
This is not a problem for anyone else in my house who all use macs (needless to say they are all very smug about this). Also when I connect to my schools wireless internet there is not a problem. Also restarting my modem and router at home does nothing to solve the problem. Like I said before this just started up about 3 days ago and has baffled me since.
[Code]......
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Aug 13, 2010
Need help, ubuntu keeps connecting and disconnecting to my wireless router. whenever i am able to get it to connect for a significant amount of time, i still have no access to the internet.
using ubuntu 10.04
using Linksys router, not sure what model but can find out.
using toshiba satellite laptop
I am able to access my router and internet in Windows without any problem
dont have anything of importance on ubuntu install, so i could reinstall but would rather not so that i could fix this problem in the future.
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May 21, 2010
I'm running puppy linux and my wireless works for about 10 minutes before crapping out. Then I tried going thru the internet wizard again and it won't detect my wireless connection. All my other machines are using this connection at the same time with no problem. The situation is temporarily resolved when i reboot.
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