CentOS 5 Networking :: Network Configured But No Internet Connection

Apr 8, 2011

I have installed centos 5.5 / 64. Configured network but - no internet. On my router I see my pc and IP. On centos, Firewall and selinux are disabled. I try to disable network and activate network manager and reverse but no luck internet is not working. Try to ping my router 192.168.5.1

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OpenSUSE Network :: X64 Xen Bridge Configured But No Br0 And No Internet Connection?

Mar 12, 2011

I have installed opensuse 11.4 xen on a HP ML115 G5 AMD Opteron server, which previously hosted a fully working opensuse 11.3 xen. The problem seems to be that br0 is not showing as a bridge device in network settings. When I first installed opensuse 11.4 networking was available via dhcp, I then installed the xen tools and answered the prompt to create a bridge, it was only when I re-booted the system that I lost my network connection.

Going back into network settings I compared the settings to an existing working opensuse 11.3 xen install that I have and noticed that br0 is not showing as a bridge device in network settings so cannot be selected, in fact no bridged devices are shown.

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OpenSUSE Network :: Nokia E65 Internet Connection - Modem Is Not Configured ?

Jun 12, 2010

Trying to move from Windows to OpenSUSE. I have installed OpenSUSE 11.2, and am having a hard time trying to connect to the internet using my nokia E65. I have tried to configure the modem thru YaST and it keeps showing that my nokia E65 modem is not configured, but adds another modem every time I configure using the edit button i.e. modem0, modem1 etc.

When i finish the configuration I get pop ups on the bottom right conner:
Notification from network management
WLAN interface attached
Network interface attached

But nothing happens afterwards. When I connect the phone it shows that it is recognized as a modem (probably). but when I click on the icon so it connects to my service provider "econet" it just says activating with a red x in the conner, and still nothing happens!

The following are the screenshots (still not sure how to attach files on this forum), may someone assist, with that too.

I really want to move from Windows but this is what's stopping me. the sooner I connect to the Internet through my phone, the sooner I leave Windows, since it's the only way I can connect to the internet.

I have tried wvdial, and I got the following:

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Ubuntu Networking :: SSH Over One Network Connection And Out To Internet On Another Network Connection

Jul 9, 2010

I need to setup an Ubuntu Server to handle backups over the network (probably rsync over ssh). That server will then transfer the backup data offsite over a secondary external data line.How can I configure the ethernet interfaces to handle such a scenario?

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Ubuntu Networking :: Wireless Network Connection Active But Still Not Internet Connection?

Jan 24, 2010

Its a case of ".... wireless network connection active but still not internet connection .."I am using WEP - 128 key ... Works when I connect directly using ethernet cable ... but not wireless (pci and wireless router)

ubuadmin@ubucomputer:~$ ifconfig

wlan0 Link encap:Ethernet HWaddr 00:06:25:12:83:3b
inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::206:25ff:fe12:833b/64 Scope:Link[code].....

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Networking :: Network Connection Without Internet?

Mar 17, 2010

I'm trying to setup network server for a week now and I was able to setup network in which i can ping the other workstation that is connected to my switch which is also connected to my server and I can also ping the server from local workstation.

I have 2 NIC, I use eth0 to dial to my dsl connection(ppp0 has the IP of my internet) and I use eth1 to connect to the switch and use to connect to the other local workstation

Now my problem is I don't know how can I share the internet connection from my eth0 or the ppp0 to my eth1 to the network, what do I need to be able to share the internet connection to the workstation that is connected to my switch.

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Ubuntu Networking :: No Network Or Internet Connection When Using KDE

Jan 18, 2010

I installed Ubuntu 9.10 using the default setup (Gnome I think) and on my Gateway Notebook using a wireless connection. It appears to be working great and I can even see my Windows drives and network storage on my home office systems.I have also set it up to run my favorite Bible software on Windows running under VirtualBox. I then installed the KDE Desktop so that I can select either desktop when logging on.

However, once I am in the KDE desktop, I cannot connect to the internet. I have checked and double-checked and the wireless settings seem to be the same on both the Gnom and KDE Desktops but still no network or internet connection when using KDE. I might mention that I am using the 64 Bit version of Ubuntu.

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Ubuntu Networking :: Internet Connection: 'Work Offline' - "No Network Connection"

Oct 31, 2010

I have the "Work Offline" problem: when I boot up, the icon on the toolbar tells me I have "No network connection". This is not quite true, since I can access the first page of any website - only subsequent pages are inaccessible. I get a message saying that Firefox is offline. However, when I uncheck "Work Offline" in the File menu, it makes no difference to this behavior.

The problem is on my Ubuntu Dell desktop, which is connected to the internet with cable broadband via a D-Link router (wired connection). It has worked fine up till now. I use Ubuntu 10.04 and Firefox 3.6.11. I am writing this on my Ubuntu Dell laptop which is wired to the same router, so I assume the problem is not the router. I have tried various strategies suggested in threads on these forums, including editing about:config, changing "allow" to "deny" in some lines of /etc/dbus-1/system.d/NetworkManager.conf and changing from Automatic (DHCP) to Automatic (DHCP) Addresses only, but no luck so far. The contents of ifconfig are:

eth0
Link encap:Ethernet HWaddr 001:aa0:91:a7:51
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
collisons: 0 txqueulen: 1000
RX bytes: 0 (0.0 B) TX bytes: 0 (0.0 B)
[Code]...

If I comment out "auto eth0" as well, it makes no difference. If I uncomment both lines ("auto eth0" and "iface eth0 inet dhcp") then I lose the internet connection altogether.

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Ubuntu Networking :: Network Connection But No Internet Access

Feb 5, 2010

I am attempting to connect Ubuntu 9.10 to the Internet.I have a network connection, and Karmic detects it fine. I can ping addresses within our network (e.g. the Windows computer in the next room), and I can ping the router, but if I ping, say www.google.com, it says "Destination Net Unreachable". Previously, in Jaunty, I had a similar problem.I found a workaround: launch Pidgin. Somehow, launching Pidgin temporarily edits my configuration. However, in Karmic, I have no access to Pidgin, however, and Empathy does not do the same thing. Since I have no Internet, I cannot "sudo apt-get install" anything.How can I get the Internet working?

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Ubuntu Networking :: Unable To Get Network Or Internet Connection?

Oct 31, 2010

I just installed Ubuntu Netbook 10.10 on my Lenovo ideapad S10e. Under the network manager it says that firmware is not installed for the wirless card but that is something for a different day. On the ethernet connection it attempts to connect via dhcp and then comes up saying it is disconnected. I attempted to set it as a static connection, when i do that it shows that its connected but I still can not connect to the internet.

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Networking :: Alternative Solution For Internet Connection To CentOS

Nov 12, 2010

i am a fresher to linux. presently i am using CentOS for getting some experience in that. but i have a problem with internet connection using in CentOS. i am using prolink USB ADSL2+ modem (H5200U). so, i request from all readers to give alternative answer.

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CentOS 5 Networking :: Laptop Doesn't Have Internet Connection

Jan 22, 2011

I have installed Centos 5 on my laptop.And I have installed Oracle databases and also VMWARE server 2 software on it.But I see no page opens in firefox browser on this laptop.I can't understand why.The laptop doesn't have internet connection. But the VMWare web access page where we can login to console and create virtual machines doesn't require internet access.I am a newbie to linux and also network issues.How to figure out what is the problem? Are there any step by step guide to investigate this issue?All the pages I open get stuck with "waiting for abc.com" etc.It never opens.Javascript is enabled for this browser.

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CentOS 5 Networking :: Internet Connection Sharing Not Working?

Jun 9, 2011

I am fairly new on CentOS and am in the process of setting up a small home office network that shares Internet access through the Linux (CentOS) box.I have two network interface cards The Linux box is also the DHCP server. My challenge is to get the client machines to access the Internet! I have a PPP connection to the ISP. Essentially I followed these Instructions CENTOS REDHAT Internet Connection Sharing. Pretty straight forward but I am still not able to get clients to access the Internet. I defined the DNS server through DHCP (196.44.x.y). I assumed it has to do with default gateway and it is set as follows: on the Linx box the gateway is my ppp0 link. DHCP uses eth1 (LAN card) fixed IP as the gateway. All clients are reflecting this information. The firewall (iptables) is reflecting the FORWARDING and POSTROUTING rules as advised.

Is there a step I mioght have missed to get this working? I tried to Google but its not getting me far.

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Ubuntu Networking :: Sharing Internet/LAN Eth0 Connection Via Wi-fi Ad-hoc Network

Dec 1, 2010

I've got access to my LAN and the Internet via my wired ethernet connection. I'd like to share that access with my iPod Touch (device shouldn't really matter) via an Ad-hoc wi-fi network.

This tutorial in the docs seems to describe the right setup but is very out of date (7.04). Instead I found this tutorial and followed it to create the Ad-hoc wireless network. I was able to connect my touch to the resulting ad-hoc network without a problem, but I didn't have LAN/Internet access.What's the next step to get the clients on the ad-hoc network out to the Internet?I found this page in the docs that says I'd need to install dnsmasq-base and uninstalling dnsmasq. I checked and dnsmasq-base is already installed but dnsmasq is not. I do have dnsmasq in /usr/sbin but the package description makes it sound like this should come with dnsmasq. Is the page out of date? Will uninstalling dnsmasq cause other problems?

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Ubuntu Networking :: Installing Network Manager Without Internet Connection

Jan 17, 2011

I've read a lot on the internet about various ways of doing this but i've been unsuccessful each time. Basically what i've done is accidently un-installed network-manager because I was having trouble staying connected on my WPA network. The easiest way of reinstalling it I know of is using the CD but I don't have a CD ROM drive and the pen drive I used to install it I no longer have.

I tried using a program called Keryx but you need python installed and from some reason this doesn't come with ubuntu 10.10. I've also downloaded the .deb packages but I still need to download 200kb which is a killer. I've also downloaded it from here too [URL] but the install file makes no sense to me as i'm not a massive linux user. One last thing reinstalling isn't really an option as i've already put a lot of time into setting up this computer.

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Ubuntu Networking :: Wired Network With Internet Connection But No Access

Mar 28, 2011

Okay, a couple of weeks ago I was running 10.04, got an auto update that needed a firefox restart, so rather than restart, I just shutdown the computer for the weekend. When I booted the computer on Monday it would find sites (www.google.com, start.ubuntu.com) but it wouldn't download the necessary items to load the page. Now I have a windows laptop sitting next to the ubuntu box and it was online with no issues, so I know it wasn't the connection itself. So I decided that the update messed up the system so I downloaded 10.10 and installed that and ran that all last week.

On Friday I got a system update that required a firefox restart, so I ran firefox for the day and decided that since it was friday, I would just shutdown the computer and reboot on Monday.Well now Monday is here and now I again have sloooowww internet, to the point that URL.. times out and won't come up. I have tried doing a traceroute on both machines and the windows box gets all the way to www.google.com, but the ubuntu box gets about halfway there and then gets no response. I am at a loss, I don't want to reinstall every week. I did try to reboot and run the previous version of 10.10 that shows in the boot menu, but that does the same thing. One thing I did notice is that the broadcast ip is different than the machine IP, don't know enough to know if this is a problem.

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CentOS 5 Networking :: No Internet Connection In Text-based Environment

Jul 5, 2011

I installed CentOS 5.6 (kernel: 2.6.18-238.12.1.el5) with X Window on my HP Compaq 6710b. I also downloaded the firmware iwl3945 for my Intel Pro Wireless 3945 and manually installed it, reloaded the iwl3945 module and enabled NetworkManager. I could then get the wireless network connection worked on my graphical environment. I installed additional software manually by using the terminal window (Applications --> Accessories --> Terminal) and everything worked perfectly.

However, when I switched to text-based environment by issuing the commend "sudo init 3" (changing the user level) and logging in as root, I could not get any internet connection. I tried to use lynx and I got the error message: "Unable to connect to remote host". I am a complete newbie in Linux and I tried to google and search for solution within centos.org but I could not find.

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Ubuntu Networking :: Restore Network / Internet Connection After Power Outage

Jan 31, 2010

Sometimes either due to a power outage or due to lightning I turn off my Wimax modem and continue to use my laptop on the battery.Then when I turn the modem back on, there is no internet connection.Here's what I've tried:

1. turn off and on the network connections - right-clicking on the icon on the bar on top of my screen.

2. turn off and on the dsl-provider connection - no effect.

3. When I tried to re-do pppoeconf, it says that there's no response from the concentrator.

This has happened a few times in the past and the only thing I can do to go online again is restart the computer. And it works.Now on Windows, the double-computer icon showing a network indicates connectivity AND data movement. Unfortunately we don't have this on Ubuntu.I'm just after a restart and I'm online now. But I'd like to know if there's a way around this without having to restart.

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Ubuntu Networking :: (fluxbuntu) Network Remains Connected; Internet Connection Sometimes Not Available?

Apr 10, 2010

I'm running Ubuntu 9.10 with fluxbox installed. Occasionally my internet connection will stop working, but when I check on wifi radar, I'm still connected to the network. The router is not plugged into a computer at the moment, just the cable jack. It is likely a hardware problem however, since my other laptops also experience disconnects. Any help beyond "change the cable" would be greatly appreciated. For instance, even though I am connected to the network, I cannot post at the moment due to lack of internet connection.

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Ubuntu Networking :: Gets Internet Connection Via WIFI Using WICD As Network Manager?

Jul 7, 2011

I have a Ubuntu 10.04 laptop that gets its Internet connection via WIFI using WICD as network manager, and Windows XP desktop with no Internet connection. What I want to do is share my Internet connection from my laptop with my desktop via a Ethernet cable. But i have no idea what to do. How do i go about doing this?

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CentOS 5 Networking :: Internet Connection Sharing Domain Name Resolution Not Working

Jan 4, 2011

I am setting up a Beowulf Cluster using CentOS 5.5. I have the head node with two NIC devices eth0 and eth1. eth0 is the one that is connected to the WAN while eth1 provides the internal LAN connection. I am trying to configure internet connection sharing with the slave nodes on the network so that I can update/install software as needed via ssh sessions using yum. I have set up the master node with the requisite changes to iptables to enable IPv4 forwarding. From my slave nodes I can ping ip address from the terminal, but my domain name resolution is not working. i.e. if I ping [URL] it can not resolve, but if I ping 74.125.224.50 (one of google's IP's) I can communicate with the machine without a problem. I also ran the configuration tool provided in the README section of the forum on the slave node and the master node. The links are:

[URL]

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Fedora Networking :: No Internet Connection Although Network Manager And Icon On Upper Bar Says Connected

Jun 22, 2011

I recently installed fedora 15 on my computer but I have a huge problem. I can connect to my router wirelessly for a couple of minutes only. Afterwards my computer has no Internet connection although the network manager and the icon on the upper bar says that i am still connected. I tried editing the /etc/rc.local and /etc/resolv.conf as mentioned in other posts in here bit no luck so far.

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Ubuntu Networking :: Internet Connection Sharing In Network Manager / No DHCP Server

Oct 14, 2010

How do I tell the shared connection that it has a static IP and that I dont want a DHCP on the network?Do I have to set up DHCP on the box with the shared connection, even if that box only runs DHCP for a single IP address being the eth0 that is shared?Or can I tell the shared connection that it has a static IP and still allow network manager to run the shared connection?Or should I specify static IP's for all clients and the shared network manager and install say firestarter on the gateway to run the NAT for the eth0 out to eth1.

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CentOS 5 Networking :: Connect Centos 5.5 Using Ethernet Port To ADSL Broadband Modem Which Is Configured In PPPoe Mode?

Feb 10, 2011

Pl can anyone guide me to connect centos 5.5 using ethernet port to ADSL Broadband modem which is configured in PPPoe mode?

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Ubuntu Networking :: Broadcom WLAN - Connection Refuses To Load Anything Off The Internet / Local Network

Jun 6, 2010

I dual boot windows xp and ubuntu 10.04 LTS and the wireless card works perfectly fine in xp so I know its not a hardware/network issue. In ubuntu, it detects wireless networks, will connect to network and work for about 20 seconds.

[Code]....

and it continues on after this alternating between a normal 20ms and high ping over 200ms. The connection refuses to load anything off the internet/local network.

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Ubuntu Networking :: After Install - Lost My Internet Connection - Wired Network - Work Offline

Apr 18, 2011

After i install it i lost my internet connection . i got a message " Wired Network " " you work offline ". i use cable ADSL ,.... my Pc information HP Pavilion 6700 running with both Window 7 & Ubuntu 10.10 note... my network connection work correctly on W7.

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Ubuntu Networking :: Kubunutu 8.10 Setup - Unable To Get Internet Configured?

Feb 10, 2010

I have kubuntu 8.10 up and running however I am not able to get internet configured. this is on a laptop i re-purposed. I have ubuntu on a desktop that works just fine. however w/ kubuntu no such luck. i realize its just kde vs gnome and am connected to the same router and such so all should work just fine, but alas it doesn't.the desktop is configured using dhcp, not static IPs.

the laptop w/ kubuntu isn't recognizing eth0

>cat /etc/network/interfaces displays:

auto eth0
iface eth0 inet dhcp

after restarting and running /etc/init.d/network restart.there is no resolv.conf... i understand dhcp should auto-create this? furthermore running ifconfig desplays no results ?

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CentOS 5 Networking :: Cannot Edit Connection In Network Manager

Jan 12, 2011

I'd like to use NetworkManager on a freshly installed CenntOS 5 on laptop Lenovo ThinkPad T61p. I followed: [URL] Everything went OK, until I selected my active LAN connection in "Edit Connections". After clicking on "Edit", it's not possible to change anything - all is grayed-out. I'm guessing it's a permission problem. But I don't know the internal structure of NetworkManager and what files to look at. I was also expecting that after stopping the network service "Syetem->Admin->Network" would be inactive, but it isn't. Shouldn't the old network manager be uninstalled as well?

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Jan 9, 2011

I am running Ubuntu 10.10, and I would like to use my computer to share the internet connection from an ethernet port. For example, I would like to set up my computer as a wireless access point so I can create a network that other computers can connect to for internet.

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Sep 29, 2010

I have installed Debian 5 and dident configure the network interfaces at installation.Now i am not able to connect to the internet through Ethernet or Wireless. How do i configure the interfaces after installation ?PS. the interfaces show up as "Not configured" in the network manager

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