Ubuntu Networking :: Connecting To Two Networks At The Same Time (11.04)?
May 28, 2011
I would like to my laptop to connect to two networks at the same time.The first network is wireless through which I access the Internet.The other network is a wired router to which my laptop and another computer are connected. would like to connect to the two networks at the same time so I can access the Internet, and talk to the other computer on the wired lan.My problem right now that I can only connect to one network at a time. Even the act of plugging in the cable for the wired network causes the wireless to cease functioning.Could somebody give specific steps. I am on Ubuntu 11.04.
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Apr 10, 2011
I have 2 network cards in my computer, and I would like to connect them to 2 different networks. Both connections work fine when I use them so that the other one is unplugged, but as soon as I connect the second plug (doesn't matter which one is first) they both stop working.I've been googling and reading dozens of pages about how to set this up, but I still can't figure it out.
One connection gets its addresses from DHCP and that connection is used for pretty much everything. The other connection has a static IP, and is used to access just one other computer, which is in the same subnet as that static IP.I'm using Ubuntu and I've been using the NetworkManager Applet to manage my connections. If I've understood my googling correctly, NetworkManager Applet can't be used alone for this kind of setup, is that correct? (Even though it has that "Routes..." button and "Use this connection only for resources on its network" which I've tried for the connection with the static IP, but they don't seem to help.)
So my questions are:
1. So I really can't use NetworkManager Applet for this?
2. What software / tools should I use instead? (My googling brought up such wildly different solutions, and I don't know which ones are outdated, if any.)
3. Should I get rid of NetworkManager Applet completely?
I'm familiar with routing in theory, totally clueless about the networking tools in Linux, but happy to read manuals and happy to learn to use the command line versions if anyone can point me to the right direction.
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Dec 28, 2010
I'm having another slight issue. On a clean install of Ubuntu Studio (10.10), I have installed network manager (manually, using .deb packages, one at a time, including all the extra ones it required) and I can only connect to non-secured networks. If I try to connect to our home network (which has WEP security), it sits thinking about it for a while (with the wireless light flashing, indicating it is doing something), but after a while, it asks for the WEP password again. it works fine if I turn the security off
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Jun 5, 2011
I have ubuntu 11.04 installed. I have a D-link USB Wireless Adapter. Ubuntu detected it and it worked fine. I have a Beetel 450TC1 Router which broadcasts my internet connection. Ubuntu recognizes it, and keeps on trying to connect.It asks me for Authentication again and again.( Don't tell me to check the password again, it does work on everything else )And its not the router problem also, as I tried broadcasting through a laptop I have, Ubuntu again detected but couldn't connect and kept asking me for Authentication
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Mar 26, 2009
I have setup an ubuntu gateway server by using four NIC cards.
eth0 :210.212.235.107 is connected to the internet
eth1 :192.168.1.222 is connected to the local network
eth2 :192.168.2.222 is connected to another network
Here 192.168.1.222 is the gateway for 192.168.1.0 network and 192.168.2.222 is the gateway for 192.168.2.0 network.These network configurations are working fine, but i want to block inter network communication ie from 192.168.1.0 network to 192.168.2.0 network,i want to block the communication for securing the local networks more.I know iptable rule is enough for this purpose .But i cant find the apt rule for this purpose.
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Aug 10, 2009
using a text interface for my computing but I have run into an issue. Does anyone know of a CLI networking tool that will allow me to connect to a non-broadcasting network? I have tried cnetworkmanager and attempted wpa_cli. The first does not seem to support it and I have not played too terribly much with the second. I have discovered that when I boot my comps into KDE and tell NetworkManager to connect to the network cnetworkmanager can find it then, but that does me no good for what I want, which is to boot my computers straight to runlevel 3 and get connected. If it means anything I am running F11 on a Dell Inspiron 1521 Laptop with a Broadcom wireless card (awfully annoying to set up, but it is working fine) as well as F11 on a desktop of my own designing with a Netgear wireless adapter.
P.S. I realize that broadcasting the network would be the trivial solution but alas I am not the admin on the router and he is out of town.
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Jun 24, 2011
Here is the setup I have. Two debain (squeeze machines) A1(eth0,192.168.33.1, netmask 255.255.255.0) and B1(eth0,192.168.43.1, netmask 255.255.255.0). They both have 3 nics'. So I am trying to connect to each other with a crossover cable and I have added the routes manually. eg: on machine A1 route added was
route add -net 192.168.43.0 netmask 255.255.255.0 gw 192.168.33.2 eth1
and on machine B1
route add -net 192.168.33.0 netmask 255.255.255.0 gw 192.168.43.2 eth1
For project purposes they both have to be on different networks, evn thouhg they are in same room.
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Dec 17, 2010
I have a created a wireless connection from the main admin account and checked the box saying "Available to all users", everything is working correctly. I only need to prevent the Desktop Users from switching the connection to another one.
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Oct 26, 2010
I noticed that it takes a couple more seconds before Ubuntu connects to my wireless network when it wakes up from sleep. I didn't have this annoyance when I was using 10.04, and only appeared when I upgraded to 10.10. It takes about 5-7 seconds before it indicates that it's connecting. When I was using 10.04, it only took a maximum of 2 seconds for it to indicate that it's in the process of connecting to my network.
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Apr 16, 2011
I am trying to configure my android phone (rooted Eris running kaossfroyo 2.2) to be used as a midi controller. Which I am having enough trouble with as it is but it has raised an annoying issue that occurred a month ago when I used the phones tethering network with my laptop. After connecting the laptop to the phones network (either tether, or an Ad-hoc network created using the network manager) I am unable to switch to other networks. In other words when I'm done with the phone-laptop connection I cannot connect my laptop to my home network! When I click on the other network connection I can see that it is attempting to connect in the upper right corner of the desktop (the network icon) but it will not make the connection.
What happens is that the network indicator will make the little circle graphic as if it is trying to connect but it never will display the other circle as green indicating that it has connected. but when I disconnect from the home network that is not connecting I will get a message underneath that will say that ad-hoc network disconnected! If I am switching from the android tether it will say Android-Tether disconnected etc. Even though when I click on network manager it shows that I am attempting to connect to the home network (labeled LIBERTY in my case) upon disconnection it shows the ad-hoc or tether connection being disconnected.
I am absolutely baffled by this! The issue persists even after deleting the ad-hoc connection from the wireless settings tab!!! I would speculate that for some reason the laptop is attempting to connect to the previous ad-hoc connection despite me wanting it to connect to LIBERTY. I am very confused and hope someone can lead me in the right direction.
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Nov 11, 2010
I have an Ubuntu 10.10 (64 bit on a Dell PowerEdge T310) that cannot connect to the Internet. The network interfaces work fine because I can connect to our local network and to the firewall appliance. The network is controlled via DHCP. I have another Ubuntu 10.10 machine that connects to the internet without any issues, so I don't believe that it is a firewall issue.
Via networking tools, I am able to perform a lookup, so DNS appears to be working. When I perform a trace route, it makes it to my firewall and then returns "no reply" from there. In firefox, I time out on "connecting to ..." I also fail on any apt-get update calls. I've disabled ipv6 in Firefox with no effect. Ifconfig results and gateway route is all correct.
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Jan 7, 2010
I could use Wireless network. I could see several different networks in my range. Then suddenly the network stoppedworking, and I can no longer see any networks under "Wireless networks".The Wired networks works fine.I tried upgrading ubuntu, but nothing changed. Just to confirm, I rebooted the computer in Windows Vista (Dual boot) andconfirmed that Wireless worked fine there. No hardware problem then.The suggestions I have found on this and other forums suggest looking at the output from iwconfig and ifconfig. But since I'm a n00b at Ubuntu I don't know what to make of it.
This is the output:
emil@emils:~$ iwconfig
lo no wireless extensions.
[code]...
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Feb 9, 2010
I just installed Ubuntu 9.10 and its great. However when I connect to the internet at home it shows that the connection has been established but I still cant connect to the internet. My flatmates are all able to connect. However, I am able to connect from work both wirelessly and through an ethernet cable.
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Jun 19, 2010
I have a Skytex SX-E700 netbook with a Linux system and I cannot connect to my Time Warner home wireless system. It will connect but the IP address is invalid. Time Warner has no idea how to fix it. Has anyone had this problem and figured out how to fix it? By the way -- I can't find any system info on this little netbook and can't seen to get into anything that tells me what it contains.
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Mar 25, 2010
as after connecting thru vnc (any tightvnc or real vnc),after some time of the connecting the Linux server RHEL 5.3,screen goes black screen with X mouse movement,getting after some time login all the things are visible even we can open the terminal & any application thru taskbar option,but after some time the screen goes black with big X. eventhough I tried to disable the screen saver option then also is happening.
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Apr 22, 2011
I am managing a PBX which runs redhat enterprise linux. The time on it is always getting out of sync, which causes the time on the phones to display incorrectly. I can't figure out for the life of me why the time keeps changing. How can I set it to update it's time every day or two? I don't want to hit ntp.org every day, as is recommended. What's the recommended interval for connecting to the ntp pool? The kernel is Linux 2.6.9-67.0.4 (from uname -a)
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Oct 20, 2010
In the right upper corner of your screen,you can see if you have a network connection or not.Most of the time I do not have one according to Networkmanager (?).So I have to enable my wired connection manually.I already tried a lot to change my settings so I would have a network connection at boot,but it doesn't seem to work....Firefox is in Offline modus when I logon..
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Jun 21, 2010
What i need to do is setup a gateway with 2 red networks, reason being 1 is my internet connection and the other is my bDSL connection for our IP phone system and i need an IP range of traffic routed to the bDSL rather than internet, i can do this on individual PC's but id like to do it at the firewall level so i dont have to configure each machine on the network.
basically i want all traffic to go to internet except for say 203.x.x.x which i want routed to the bDSL router and let it handle it. Ive dome some reading and it seems ipcop and smoothwall cant do it so i was hoping with some tricky work maybe i can get ubuntu to do it for me.
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Aug 15, 2010
I just bought a new toshiba c655 laptop and had windows 7 on it. i made the dual boot partition on it, yada yada yada, anyway, on the windows partition i can see two networks at my house. one is mine, one is my neighbors. but when i go to the ubuntu side of things not a single wifi network shows up. i did a little combing of the forums and decided to try installing the ndisgtk package which i obviously need internet for. i thought i would plug it into an ethernet cable running straight from the modom and i could connect and download no problem. however. this has turned out to be quite a mistake. ubuntu does not even recognize the fact i have an ethernet cable plugged in. this may or may not be related, but niether my ipod or my cell phone does not show up when i plug those in and when i try to mount them i get an error message that says they could not be found. Im running 10.04.
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Oct 12, 2010
i have an acer aspire 7551, and trying to setup wireless. The WI-FI indicator is turned off. Here is the basic output that i get:
Code:
ubuntu@ubuntu:~/Desktop$ sudo lshw -C network
*-network
[code]....
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Dec 28, 2010
I installed ubuntu and i installed it using the install as a program inside windows options but when I boot into ubuntu it does not detect any networks I tried the command sudo pppoeconf it says ethernet card is not there and then it asked me to try modconf and when i try modconf it says that modconf is not installed How can i set internet connection in ubuntu 10.04 I get address assigned by DHCP
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Jan 24, 2011
I have an hp dm1z and ubuntu 10.10 64bit. After I suspend (close the lid) and wake it up (open the lid) at a different location with a network connection (wired or wireless), my system always fails to connect. I need to reboot and then it sees the network and connects fine. I have tried /etc/inet.d/networking restart, but nothing changes. The only exception to this rule are two networks that have WPA security settings and are stored. I can always switch between those two. I have tried ifconfig eth0 up & down and restart networking. I have also tried to connect manually (dhclient) and no success. None of these work. I am including the output of lshw -C network.
lshw -C network:
*-network
description: Ethernet interface
product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
[code]....
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Feb 1, 2011
I have an MSI Wind U100 netbook running Maverick, and it has a Realtek RTL8187SE Wireless controller according to lshw. My computer can "see" some wireless networks where they are present, meaning when I click on the little network icon at the top of my screen it shows the available networks. But when I click on them to connect, the icon does its little "connecting" motion, but I never receive any message saying "Connected" and when I open Firefox and try to browse to google.com, it says "Server not found"
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Mar 22, 2011
I have an ethernet card connected to my LAN and a USB cell modem internet connection. I am running ubuntu 10.10. The problem is this: I can use either network, but only am connected to one of them. If I connect to both at the same time my speed drops to zero.f I disconnect one, the other starts working. I have done a lot of searching and reading, but it looks like I don't know how to find what I am looking for.My LAN was setup as 3 WinXP computers peer to peer. One of those computers was replaced by this one that I am having trouble with (computer A). Another one was replaced by one that is not yet on the network (computer C).Computer B dual boots Win XP and ubuntu 10.4. Mostly it ns xp for Quickbooks and BobCAD, also it is connected to the printer. My router is setup for DHCP
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Feb 14, 2010
I have been having trouble getting my network card to access networks. I currently am using a wired connection. A while ago when I first installed Linux on this same computer, I got it working by installing the driver. But since I reinstalled Linux, I tried the process again with no success. Can anyone give me explicit instructions on installing the network card driver so I can use it on Linux.
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Mar 23, 2010
I have Ubuntu 9.10 on VirtualBox.How can i view my wireless networks via 2 ways ?
1)via Terminal(Shell)
2)via a suitable apps in GUI.
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Apr 5, 2010
I'm dual-booting Ubuntu 9.10 (upgraded from 9.04) and Windows 7 on my Dell Inspiron 1525 laptop.Ubuntu doesn't recognize any wireless network (both in 9.04 and 9.10); my Windows OS works perfectly well with wireless, as does my wired Internet connection with Ubuntu and Windows.I've had this problem on previous installations of Ubuntu (I've removed and re-installed it several times) but I can't locate the solution anywhere. I've tried numerous fixes that I've found online, but none of them have worked.System>Administration>Hardware Drivers tells me that the Broadcom STA Wireless driver is activated and currently in use
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May 4, 2010
I am using a Toshiba Laptop model P205D-S7802 with an atheros wireless card. Since I upgraded to 10.04 I am unable to connect to the internet unless I use an ethernet cable. I have been surfing the threads for a fix and have tried what has been posted but to no avail.
HTML Code:
eth0 Link encap:Ethernet HWaddr 00:1b:38:b6:cb:98
inet addr:192.168.1.6 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21b:38ff:feb6:cb98/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[Code]...
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May 7, 2010
I can normally connect to most wifi connections, but for some reason I can't connect to my broth's-gf-parent's network. Windows 7 can connect to it just fine, but not Ubuntu. Once in a while I'll go to a cafe, and this will happen there too.hough, like I said I can normally connect to all other wifi networks with no hassle
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Sep 5, 2010
I'm running Ubuntu 10.04 64bit on a Thinkpad T61, and I keep running into some issues with the wireless networks. For a while, the connection works fine (sometimes several hours, sometimes 15 minutes or so--there doesn't appear to be an event associated with it). Eventually, though, the connection disappears; first, though the widgets say I'm connected, nothing will go through, and soon after, it realizes I'm not connected and, moreover, it can't find a single wireless network, despite the fact that it was just fine a couple of minutes beforehand (and other devices still have access to the WLAN, so I know that the router hasn't crapped out). I've tried using wicd, but the same thing happens.
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