Ubuntu Networking :: DNS - Local Devices Name Resolution?
May 30, 2010
In my home network, My Ubuntu 10.04 LTS (fully up to date) is having trouble being able to ping other computers by their computer names instead of by their IP#s. I've checked over the settings of the router (D-Link that provides wired and wireless connectivity, DNS, Gateway, etc.) and I'm pretty sure it is set correctly. My Ubuntu system is a dual-boot (Ubuntu and XP), the other computers are all XP except for one which is running Windows 2000 Pro. All the other computers are able to ping each other by name, and can ping this one by name when it's in XP or when it's in Ubuntu.
But this computer (when in Ubuntu) cannot seem to ping the other computers by name. Some it can be pinged by name from the Ubuntu system if I include the .local to the name, but others do not. I have checked and compared the network settings on each of the computers to make sure they were set identically (only the computer name is different). All of the XP systems are DHCP configured, The Win2000 is set static and is also reserved at the router. NONE of them have any of the computers listed in a hosts file. I want to avoid editing hosts files if I can.
There are seven computers in all. Only the Ubuntu has difficulty pinging other computers by name. What should I check? What can I set? I would like to know what it is that I'm missing.
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May 16, 2010
I'd like a way to see all of the devices on my local network and what their local IP address is. I recall that I used wireshark to troubleshoot a similar problem a while back, but it doesn't seem to have a way to see all of the devices- only the traffic. (I'd like to do this without having to physically interface with my router if possible, and I am in an encrypted network if that matters)
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Jan 25, 2010
Up until yesterday I was able to access these devices through the web interfaces that they use. I'm running Ubuntu Karmic 9.10 I have 3 PCs running on my network, and 2 NAS devices: Ubuntu (main computer, also has an XP partition)) - static IP 192.168.1.30 Ubuntu netbook - DHCP IP Windows XP (HTPC) - static 192.168.1.50 Linksys NSLU2 (was running Debian, problem arose when trying different configuration, now back to stock firmware) - static IP 192.168.1.100 Dlink DSM-G600 - static IP 192.168.1.120
I used to be able to able access these just fine using my main Ubuntu setup. Now, it will no longer display the pages. Internet access is fine, i can even access my DSL/Router device's internal config page. The netbook and the Windows HTPC can both log into these devices, as well as the XP partition of the Ubuntu system. I have tried using a VM of XP within Ubuntu, bridging the network device, i have the same symptoms - internet is fine, cannot access local network web-logins.
Access to fileshares among all machines remains unchanged. another odd behavior is that i can SSH into the NSLU2 device from all the machines, but i get odd things from this computer - it will let me log in, asks for a username and pass, but if i run anything like mc or htop, it just blanks the terminal in an odd way. from other computers the login and display are fine.
[Code]...
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May 12, 2011
I'm looking to convert my HTPC into a remote android dev server for my girlfriend and myself, however I want to make sure that it is possible to do what I am looking to do.Is it possible to map local devices to the VNC server (such as an android phone) so that we can work on development over VNC with phones we have on our client computers? I know its a trivial matter to map local drives over VNC, but what about non-HD devices, can I still maintain full functionality as if the device itself was plugged directly into the server?'ll be installing ubuntu again this weekend, never got around to it after my last HD failure.
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Nov 26, 2010
I've setup openVPN using bridging following these guides
[URL]
I'm running Ubuntu Server 10.10 My clients can connect and get their own IP within my ip range (192.168.1.x) They can ping each other and I've tested I can use the connection a lan game and a windows RDP connection. The problem is I cannot access any of the actual local network devices except the vpnServer. Is their something else that needs to be done to allow full network access?
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Jun 28, 2011
I have installed a web server on my local network. Everything is well configured and web pages are shown correctly from Internet (outside the local network) using the domain or the public IP.The issue is if I try to see that web pages (using the domain or the public IP) from inside the local network. In that case the router config page (192.168.1.1) is shown instead of the web pages.From inside the local network I'm only able to see the web pages using the internal IP address (192.168.1.XX).
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May 25, 2010
I've got an Ubuntu server hosting our websites and other various things here in our own home. We recently switched to a router that doesn't support loopback (abomination), so I've set up hosts files on our computers so we can access our own sites when on our home LAN.
However, we often take our laptops as we travel about, and I'm guessing due to the hosts files when we try to access our sites, it'll look on whatever local network we're connected to for our server, which won't work, obviously.
Is there a way to set up something like a hosts file that'll only try to look up the local IP of the server when we're on a specific network (our home one), or have one that tries to look for the local IP first, then proceeds to try and resolve the domain name and use the external IP if the local IP doesn't work?
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May 22, 2010
I just installed skype 2.1 beta 2 (the deb file) from the skype website, but the only option I see under Sound Devices -> Recording is "PulseAudio Server (local)" This doesn't work for me, as the skype test calls don't actually record anything I say. I use skype a lot and FINALLY got it working under karmic, but I needed to upgrade to lucid and now it's broken.
When I open Sound preferences and look at the Applications section, Skype shows up as recording when I run its test call... but no sound is recorded? How is it possible that my sound card picks up something recording but doesn't actually record it when I'm in skype?
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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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Nov 17, 2010
I'm looking for some help on how to troubleshoot the network on Ubuntu 10.04 64 Desktop. It's on a Acer Aspire 721. There's a wireless card but the widget in the top right says there is no network device.
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Jun 6, 2011
Just built a box and once 10.04.2 64 bit was all installed and loaded up I realized instead of showing my Ethernet as connected it had the ol x. So when I clicked on it I got "No network devices available." The mainboard is an Asrock 890GX Pro3, link light completely out.
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Feb 19, 2010
Running Ubuntu 9.10. In the Remote Desktop config dialog I get: "Your desktop is only reachable over the local network. Others can access your computer using the address 127.0.0.1 or tabatha.local." I understand this means only the loopback ip address is available. All my other machines show their true local ip address (e.g., 192.168.1.104) in this dialog. Thus I cannot log on to this desktop from other machines.
When I try to do a remote logon from another Ubuntu 9.10 box (or from an XP box using a VNC viewer), I get: "Connection to 192.168.1.102 has been closed." What steps are needed to make this machine show its actual ip address? All file sharing between the various machines is working properly and all windows shares back and forth between XP and 'nix, and among the the vaious XP boxes and linux boxes are available as designed.
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May 18, 2010
Just wondering if there is a way to view all connected devices on my network?? Something similar to view network map in vista?? I know the places network but that only shows me my shares and I want to be able to see everything that is on there ie printers, routers, VOIP, other non-shared computers, etc...
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Jun 3, 2010
I'm trying to set my network interfaces so that they don't get random every boot.(eg assign eth0 to a network interface with a given MAC addr, and eth1 to the other one)I trew in a udev rule (in fact just modified the rules that was automatically generated and set the ethX in it) but the system ignores my udev rule.What am I missing ?Here is all the info :
Code:
$cat /etc/udev/rules.d/70-persistent-net.rules
# This file maintains persistent names for network interfaces.
[code]....
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Jan 3, 2010
I know pretty nothing about networking'n'stuff. I got this linksys wireless router that was somewhere in a box for a few years ... now I want to see whether I can bring it back to life. I know, that I put some different software on it and that it doesn't have it's original ip assigned any more. But I can't remember which ip that would be.
So for starters I just wanted to put the original software back on to see if that thing still works. But how to do that? First I got no clue how to determine the address it is listening to. Once that'd be figured out I guess I'd have to ssh to it and install this ____.bin file I downloaded somehow.
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Jan 14, 2010
I've got a co-worker who is trying to connect multiple devices to his wireless router - Xbox, Wii, TV, Dishnetwork box, etc. Not all of the devices are wireless however. He's had several thoughts on how to get this done and I know very little about this kind of thing so I thought I'd ask some of you.
His first thought was to buy a multi port bridge, but he doesn't like any of the ones he's seen so far.The other thought was to connect all of the devices to a switch and then use a single bridge, but he isn't sure if this would work.
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Aug 12, 2010
I'm running Ubuntu 10.04 on a HP Mini 1116nr as expected i have no Wireless access but i also seem to have no wired access either.
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Jun 16, 2011
I have a HCL K21 PDC notebook . In windows there is an driver called wconsole.exe or wireless console which help me turn on and off both blutooth and wlan device but in ubuntu these devices are not turned off. I also tried to to use the device buttons but it get activated automatically (but not in windows).
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Jan 9, 2010
I am running Ubuntu 9.10 and Windows 7 (Wubi). Windows Networking shows all devices on the network (computers, routers, etc). Is there a way to get Ubuntu to do this (Would prefer GUI)?
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Jul 28, 2010
What I am trying to do is the following: I have many IBM MT-M 6223 towers (Intel Xeon processor) that need to run a certain Fedora 9 configuration. It is working on one box, now it needs to be replicated on all of the others. What is being done is the working box is cloned, and then that image is loaded on all of the others.These boxes have 5 total Ethernet devices. There is one on-board port, and there are two 2-port expansion cards for a total of 5.
There was one initial problem out of the gate that has since been solved (or perhaps not completely). What was happening is that the boxes that received the cloned image had their Ethernet devices misnumbered. Instead of eth0 through eth4, they were numbered eth5 through eth9.This was eventually traced to the following file: /etc/udev/rules.d/70-persistent-net-config. That file contained the original settings from the box that was first cloned. It had eth0 through eth4 at the top with MAC addresses belonging the box that was the source of the cloned image. It looks like this mismatch was detected, and five more entries, numbered eth5 through eth9, got appended to the bottom with MAC addresses belonging to the new box.
Once /etc/udev/rules.d/70-persistent-net-config was deleted, and the machine rebooted, the 5 ethernet devices came up with the correct numbering (0 thru 4). /etc/udev/rules.d/70-persistent-net-config was rebuilt with the correct devname-MAC pairing.
Now for this new problem.... Part of the configuration across all these machines is that only eth3 should have an IP address. It is a static IP address set through the /etc/sysconfig/network-scripts/ifcfg-eth3 file. All of the other devices must NOT have any IP address. They are either not used or used only for raw Ethernet.After clearing out /etc/udev/rules.d/70-persistent-net-config, /etc/sysconfig/network-scripts/ifcfg-eth3 was edited to give the new box its own unique static IP address before rebooting.Sample ifcfg-eth3 file:
Code:
DEVICE=eth3
BOOTPROTO=static
[code]....
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Jul 27, 2011
How can I login to some devices that are behind my Server?
My topology is:
So, what I need is to access these VOIP ATA's web interfaces using port forward not using PPTP connections.
Example:
x.x.x.x:2020 ===>> VOIP ATA1
x.x.x.x:2021 ===>> VOIP ATA2
x.x.x.x:2022 ===>> VOIP ATA3
Where x.x.x.x == >> Static Real WAN IP
VOIP ATA1 IP == >> 10.10.10.47
VOIP ATA2 IP == >> 10.10.10.48
VOIP ATA3 IP == >> 10.10.10.49
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Mar 31, 2010
How can I find all the devices(printers,etc...) and computers along with their OS if any installed that are connected in my intranet (devices/computers may be down here)?
I did this earlier using netstat or nmap not sure what I used and how I did.
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Jan 8, 2010
Since upgrading to Karmic, all my shares under 'Removable Devices' are listed twice...all was fine in Jaunty though, and I've done nothing to change them.Would anyone have an idea how to resolve this.In terms of what I see, there are all my shares with a white drive icon which, when clicked, do nothing. I then have all the same shares with a metal drive icon which open up the share when clicked.
I understand that the icons may look different, depending on what icon theme you're using, but the principal will remain the same.
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Jun 30, 2010
I've got three network devices on a laptop:
1. Built-in ethernet LAN
2. Built-in ethernet WLAN
3. PCMCIA ethernet LAN
I installed Ubuntu Server on this computer without the last one inserted.I inserted the last one today, and it lights up when i put in the cable. To be sure if Ubuntu has found it, I tested with the install CD and could see that it found all three at the first part of the installation where I have to chose a primary device.I can't get my WLAN card working, neither do I get my PCMCIA LAN card working. The third card, this PCMCIA card, has worked on Ubuntu Desktop using another laptop. And as said, the setup finds all three.
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Oct 21, 2010
I am running Ubuntu 10.10 on Hp Mini 110. I can't get Mobile Broadband to work ... whenever I plug a USB device in, nothing is detected and there is no option to connect to mobile broadband. The devices I have tested are;
1. ZTE MF636
2. ZTE MF626
3. Huawei K3565-Z
4. Nokia 5800XM phone in PC Suite Mode (works on my other laptop running Ubuntu 10.04)
I have tried uninstalling with a full purge of USB-Modeswitch and then reinstalling it. This machine is upgraded from 10.04. It wasn't working in 10.04 either.
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Dec 5, 2010
I just loaded 10.10 on an Acer Aspire One D255. When I installed Ubuntu, network manager loaded and I was able to use both the wired and wireless cards. After I used update manager, the kernel was upgraded, and I also added some wireless applications (RutilT WLAN Manager, SWScanner, and WiFi Radar). Upon reboot, the network manager doesn't work, and it cannot find any of the devices.
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Mar 31, 2010
I did a forum search and too much came up that was not the answer I was looking for. I have only Linux devices at work and I was wondering how do Linux Administrators connect to Cisco devices via serial console cable. Cisco recommends 'Hyper Terminal' which was a Windows add-on applications licensed to XP. I think Vista and 7 no longer have the license to use Hyper Terminal. Regardless I don't have any versions of Windows and would like to use a serial cable from Com port 1 to the console port on the device. I can't use SSH since some devices don't support SSH and or I have to do a password recovery.
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Jun 23, 2011
I'm doing a few tests with fedora 15. I'm surprised because they changed the naming way on network devices. eth0 is now called em1.At every fedora I have found the configuration files in /etc/sysconfig/network-scripts, but today I can't find them.
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Apr 7, 2011
To use my home broadband, I am connected to a wireless router. How can I scan for other devices connected to that router? I am using Ubuntu 10.10.Is there both a GUI and CLI method?The IP of my router is URL... Please rename this thread title from 'How can I scan for other devices connected to that router?' to 'How can I scan for other devices connected to my router?
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Jul 1, 2010
i've put together a slackware box that acts as a "virtual web" to answer pings from devices that ping various pages (such as www.yahoo.com) to test their connectivity. this is for bench testing the devices to verify such complaints as "cannot connect to the internet" or "fails connectivity test". so far, so good, except for a few devices that seem to be also try to load a particular page wirh an embedded browser. this i need help with. currently, all that's needed to return a ping is to look at the DNS requests the device makes and add the requested web address (www.yahoo.com for instance) to the hosts file. what i need is a redirect to a particular html file based on the address requested (i.e. yahoopage.html for www.yahoo.com, lgepage.html for www.lge.com, etc) any deas on how to accomplish this?
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