Ubuntu Networking :: Cannot Ping Windows By Name But IP Works Fine
Dec 3, 2010
My Windows machine can ping Ubuntu by name, but Ubuntu can only ping the Windows machine by using it's IP address. This was working fine in both directions until I purged Samba. After purging Samba, I couldn't ping in either direction unless I used the IP address. I did some reading and found that Samba provides NetBIOS functionality that allows the machines to resolve host names without a DNS. Since I'm not running a local DNS, I decided to reinstall Samba. Unfortunately, I've not been able to restore it to full working condition. I don't want to use hosts files as all the IP addresses are assigned automatically by DHCP. I want to be able to access the Windows machine by name.
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May 13, 2011
Even ping google's ip address doesn't work. unknown host error using backtrack4 able to browse net with these settings.
My network settings:
What's the problem with these settings...
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Apr 30, 2010
I installed Ubuntu (10.04) today and it has gone smoothly except for the fact that I can't connect to the Internet when in Ubuntu (connection works fine in Windows XP). I am using a wireless USB card (Linksys WUSB600N) to connect.
The weird thing is that the card detects all the local networks, asks me for a password to my network, and it even says it is connected to my network after I put the password in -- but when I open Firefox no pages will load.
There is another weird quirk as well: Ubuntu will not restart or shut down properly (it hangs around indefinitely with the little white / orange dots going across the screen) unless I first remove the wireless card from the USB slot. But that doesn't bother me as badly as the lack of Internet.
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Oct 29, 2010
I just got Ubuntu and am new at this stuff. I have a dual boot windows 7 64 bit one and ubuntu 10.4. I booted ubuntu at startup and then tried to go online, but it says my wireless device is disabled. I tried pressing the keys on my keyboard to see if that may work, but it doesn't. I am lost and new at this.
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Jul 22, 2010
Ubuntu and after installing it i can't browse any internet through firefox although ping is working good and downloading plugins to system to run MP3 or videos is also working fine but can't open any website through firefox and i tried the live cd of Ubuntu 10.4 at other PC and internet was working fine and firefox was working fine
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Oct 13, 2010
Just had to replace the hard drive on my wife's iPod Classic 6th Generation. Now I cannot mount the device. It works fine on Windows and Mac computers. I have tried formating it on both Windows and Mac, I've done restores through Itunes on both. Here is what I get in my /var/log/messages
Code:
kernel: [84412.470389] scsi10 : usb-storage 1-5.3:1.0
kernel: [84413.477317] scsi 10:0:0:0: Direct-Access Apple iPod 1.62 PQ: 0 ANSI: 0
kernel: [84413.477445] sd 10:0:0:0: Attached scsi generic sg7 type 0
kernel: [84413.500917] sd 10:0:0:0: [sdf] Spinning up disk....ready
[Code]...
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Mar 30, 2011
I'm not able to connect to my university's internet facilities under openSUSE 11.4. I have been able to connect in the past and I am still able to connect in Windows 7.When I try to connect to the university WiFi, a valid IP address is assigned to me and the gateway address appears to be correct, so I don't see a problem in the DHCP negotations. Same with my university's Ethernet: I get a valid IP address, but I can't connect to the internet.When I browse to any site with Chromium/Chrome/ Firefox/lynx/curl, the page is stuck at "Sending request". I have tried disabling my firewall - that didn't solve anything.I don't know what else I can try and the campus' network administrators are puzzled. How can I resolve my issue?
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Oct 5, 2010
This has been bugging me for quite a long time. I need to have a pptp connection to my university. I have tried to locate the error, but this has been a real trouble.
A little bit of history: My girlfriend had a laptop with M$ vista on it with a working PPTP connection. I had a laptop with Ubuntu, with which I couldn't get the PPTP working.
When my laptop crashed, I bought a new one on which I run a dual boot XP SP3 and Ubuntu. I also own a desktop (Dual M$ Win 7 / Ubuntu standard Karmic) and my girfriend also upgraded to Win 7.
Currently, the XP version is the only one on which I can get a connection. Both Ubuntu and the Win 7's give me a GRE proc 47 not received error. I know our router (a DAVOLINK DV2020) is notorious for not sending through GRE proc 47, but this either shouldn't be the case or it shouldn't matter, since I can make a perfect connection through the XP OS.
This is quite a handicap, since we both study at the university for which we require working VPN PPTP connections.
Settings:
Gateway: vpn-eur-pptp.eur.nl
Username: 123456ab@eur.nl
Password: password
Authentication: MSCHAP / MSCHAPv2
[Code].....
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Nov 7, 2010
I have done a fresh install of the OS and I am having wifi trouble. I am failing in connecting to an access point that Windows works fine with on the same machine. As far as I can tell it is connecting but not getting an IP address via DHCP. when running ifup it says its backgrounding getting an ip address.
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Aug 8, 2010
I have 2 10.04 computers and one win 7 and one vista computer: The win computers can see each other and the ubuntu computers, but the ubuntu computers cannot see each other or the win machines. The ubuntu computers connect to the internet fine and can ping each other. I cannot find settings to correct.
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May 13, 2011
I'm using ubuntu server 10.04 with openvpn installed on it. My vpn is working fine, all the users can connect without any issue.My problem is that I'm unable to filter the VPN traffic using openvpn. I can't allow all users to be able to interact with other vpn users. I need to avoid this kind of traffic.I was trying to build an iptables firewall, but I just noticed that my openvpn traffic isn't being filtered by iptables.In FORWARD chain, no matter what rule I use openvpn would continue to allow traffic between my clients. It does appear that openvpn is skipping FORWARD chain?For example:
Code:
# iptables -L FORWARD -nv
Chain FORWARD (policy DROP 0 packets, 0 bytes)
[code]....
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Jan 23, 2010
I have been using Ubuntu 10.04 (32 bit) as a headless workstation, running a VNC screen. Worked perfectly for about 3 weeks, then suddenly, I lost the Drag and Drop capability, for all applications.For example: Dragging and dropping to move items on the desktop does not work. The item simply pops back to the original location.Dragging and dropping to move items from one folder to another does not work. Same behavior the item just pops back to the original location.Dragging and dropping Bookmarks in Firefox does not work. The attempted Drag and Drop is ignored.Copy and paste still works fine.The problem does NOT occur when using an attached monitor (primary display screen :0).After much Googling (including these forums), I suspected that the changed behavior was caused by an update (from Ubuntu Update Manager). I confirmed this with the following:
Reinstalled Ubuntu 10.04 fresh from the live cd.
Configured minimal networking and installed VNC server.
Tested Drag and drop -- works okay
Applied pending updates (116) from Ubuntu Update Manager
Tested Drag and drop -- not working
I am using vnc4server and openssh-server installed from the repositories using Synaptic.
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May 17, 2011
I switched from windows to Ubuntu 10.10. But I'm not getting along with it as well as I expected I would Specially cause I'm not getting the best out of it due to limited web connectivity. I used to use a usb WiMax modem back in windows (which is also supposed to be supported by linux as my service provider said) for internet. But I'm having a hard time configuring it on my Ubuntu. The modem works fine but I'm failing to install the drivers [url]. I used my cell as a temporary modem to get help from the web.
I downloaded:-
i2400m firmware 1.5.0
WiMAX Tools 1.4.5
WiMAX Network Service 1.5.2
According to the documentation, I'm supposed to install the linux kernel 2.6.35 which Maverick comes with anyway.
Then comes the part to install the firmware. The command I used was
Code:
But unfortunately and annoyingly the result is
Code:
I didn't get it. Am I missing any package or something?
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Oct 1, 2009
This is my startup routine:
I log on and Network Manager shows no wireless adapter.
I go to System > Administration > Network:
There are two entries in the Devices tab: Wireless and Ethernet
As soon as I double click the Wireless device and the configuration pops up, the device starts working (no changes to the settings are made)
I have the following set to ON:
- Controlled by Network Manager
- Activate device when computer starts
- Allow all users to enable and disable this device
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Feb 6, 2010
My problem is the following:I can only connect to the internet and download through the FTP, but not through HTTP.I am in a hospital at this moment and have a netbook (Lemote Yeelong). Also there is a computer here with internet access.I would like to access the internet by using the cable from the computer.I configured my netbook just like the local computer (same host name, same MAC address, DHCP), just to be sure.I can ping google.com and I also can download from ftp.debian.org though ftp.However, when I try to connect to google.com through epiphany, it just loads and loads without success
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May 20, 2011
When I ping a destination IP address, it responds. However, when I try to telnet or ftp or sftp to the same IP address, it does not connect.
I do not know the physical location of the machine.
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Aug 2, 2010
I'm trying to install Mandriva Spring 2010 for a friend on his laptop after MS Windows crashed. The installation appeared to work, but I've got an odd networking problem - firefox is unable to load URLs. Every URL I try returns a server not found error.
When I drop into bash I'm able to do the following
Code:
ping 66.102.9.103
ping google.com
However when I try
Code:
wget http://google.com
I just get a message that tells me that wget is "unable to resolve host address google.com'". This is odd - ping is able to resolve google.com, but wget isn't. I assume that firefox and Konqueror both have the same problem. Could it be cause I've specified the http protocol?
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Sep 3, 2010
I can't ping by netbios name or fully qualified domain name, BUT nmblookup works just fine. I know it's a dns problem(s) I just don't know what or how to fix it. I'm very new to all of this(networking, domain administration, posting on forums etc) so I hope this is the right way to ask for help here. I've searched around the forums and the internet for a bit but I haven't found a solution to my problem yet.
here is some background on how the network is setup2 different domains sharing the same dhcp scope.
DC for DomainA is running windows 2003 std
DC for DomainB is running windows 2008 sbs
DC-A has ip of 192.168.1.249
DC-B has ip of 192.168.1.3
router is sonicwall (192.168.1.1)
DC-A is hosting both DHCP and DNS
there are 25 computers in DomainB and 1 computer (not in domain) with ubuntu 10.04 and Free Open Ghost running on it (dhcp off) all 25 computers can ping the fog server by name (and eachother) all 25 computers pxeboot to fog just fine
[Code]...
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Dec 4, 2010
I've encountered a problem after doing a fresh install with xubuntu 10.10 (2.6.35-23-generic).some sites are blocked like [url]....if I do dig [url]....- I receive the A, CNAME records and the IP address and everything.when ping[url].... - I receive 'unknown host'.when ping <theipaddress> - I receive responses
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Jun 17, 2009
Since I installed FC11 I can't get vpnc to work (I always getno response from target").Also I can't ping any external IP even with the firewall disabled.What I see strange is that I had the same configuration in FC10 and the router configuration seems okay to me:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.64.64.64 * 255.255.255.255 UH 0 0 0 ppp0
[code]...
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Feb 5, 2010
I posted this already in the absolute beginner section, but no answer was found, so I thought I might try this place..Long story as short as possible:
- I installed Ubuntu 9.10 for a friend who was fed up with WinXP crashing all the time
- After the install, networks was broken. I could ping sites outside the LAN, could connect to the router via firefox, but NO application could access the web. - The router works just fine, I tried with my own notebook.
- Disabling ipv6 in grub (edit /etc/default/grub and 'sudo update-grub') seemed to solve the problem.
- Then update the standard packages + install restricted extras and boom, Network gone: No ping to sites outside the LAN, no nothing. Still can connect fine to the router and even the remote desktop connection works, connecting over the internet. But that's it.
I have tried setting the mpu to a value recommended by my isp, I have set static ip and dns, I really don't now what to try any more.
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Jul 15, 2011
I am using an virtual machine. where I need to ping from one machine to another. earlier I was able to ping. But after going to google.com once, I cannot ping back to this machine.
But if I gave ping -I eth1 <IP> then I can ping.
I cannot install any package, so tell me solution which includes not installing any package.
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Apr 30, 2010
one of these "WiFi works in Gnome, not in KDE" threads, but I have been all over google and hundreds of threads across different sites and can't figure this one out.As mentioned, wireless is peachy in Gnome, unfortunately I like KDE and I'm more productive using it (when I have internet). Wired network works fine in KDE, and my network card
Code:
03:00.0 Network controller: Intel Corporation Wireless WiFi Link 5100
Subsystem: Intel Corporation Device 1201
[code]....
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Oct 17, 2010
i have wubi, and xp. i keep getting the bsod in windows, so until i take the time to troubleshoot, i will not be using it. something with drivers. . . i noticed quickset and intel proset wireless were having driver issues then this happened.
anyway--when i am using ubuntu, the wireless connection frequently drops. rarely happened in windows. i found i have to disable then enable connections to get it to work. sometimes it will stay connected 30 seconds, sometimes a few hours. plus, when it is connected, it runs much slower (like 5 minute videos videos get stuck). i am currently using chromium but it happens with firefox and opera as well.
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Mar 18, 2010
I have an ubuntu kk laptop connected via wireless to my mixed network (xp, win7, other ubuntu), but i can not ping said machine or connect via ssh. Internet and smb-browsing ON this machine work, as does pinging FROM it. If this was a windows machine, I'd say a firewall is in the way, but since it's a vanilla karmic install, this should not be the case (or should it?).
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Mar 30, 2011
Basically i set up a webserver using this tutorial but installed ubuntu 10.10 [URL]
im using charter cable and it has that ubee router. when i tried to set up the static ip the closest thing i saw was an option called static ip lease in which input my servers local address and mac address and checked enable. then i applied dmz to my servers local ip. after that i typed in my public ip and to my excitement it worked. so i began creating the website. i dont know if all that is relevant but just in case i didnt want to leave anything out. this is my first time with linux and servers and ive only been at it for about 5 days. anyways i made the website and everything was going good then i needed to reboot the server so i did. after reboot i logged into the server then went back to the other room where i worked on the server using putty from a pc and flashfxp and tried to navigate to the website in firefox. it didnt work. if i try to go to the website address from a computer on my network i get a problem loading page error from firefox and if im on a different network it shows my router page to login and configure. i dont understand how it was working then after reboot it all of a sudden doesnt.
o also i installed gnump3 today before reboot if that is important
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Dec 10, 2010
I've been troubleshooting this problem for several hours now and I'm out of ideas. My internet connection is fine in Windows 7 but an older computer I resurrected (AMD Athlon 1.7 GHz, 512 MB RAM, Fedora 14 Security Lab Spin) is having the stop-and-go's with its internet connection. It will work for very briefly, then it gets extremely slow, where any page I try to navigate to in Firefox 3.6 takes forever to load.I have a DSL connection and my DSL modem is connected to a Linksys WRT54G2 router. I set up a static IP in Windows but don't know how to do this yet in Fedora 14, and I need to get my internet connection working so I can troubleshoot further, but with it being so slow, I'm having to use Windows to search for problems and then switch over to the Fedora box via KVM (IOGEAR), which I also just started using. I don't think that would be related, but who knows.
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Mar 30, 2010
On my Acer netbook (AOA-150-1635) the wireless works fine with WinXP, Ubuntu, and used to work with Suse 11.1. I replaced the Suse 11.1 with a clean network install of Suse 11.2. I couldn't get the wireless to work and did another network install using the wireless. When the install was completed I could not get the wireless to work with Suse 11.2. When I run the "collectNWData.sh" it shows--
!!! CND0120E: Network card wlan0 has no IP address
wlan0 Interface doesn't support scanning : Network is down
[code].....
I looked up error CD0120E and changed the network devices setup to "traditional". The wireless "scan" picked up the routers and I added the encryption keys. Still no joy. I ran "collectNWData.sh" again and it said it is better to use the Network Manager.
!!! CND0180I: The system can't ping external IP address 195.135.220.3
!!! CND0150E: There might be a problem with the default gateway definition 10.1.1.1 on interface eth0
[code]....
Going back to Yast, Network Devices, I set Network Manager. The result is that it is back to the beginning with "collectNWData.sh" giving the original error.
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Mar 18, 2010
I've got 9.04 and 9.10 both installed on the same machine. The /home directory is on a separate partition, so both OSes use the same /home.I can't get Compiz to work at all in 9.10, even though it's been perfectly fine in 9.04. Is there a backport of some sort that i should install?The fixes I've found all point to editing the xorg.conf file, but of course, Karmic doesn't have an xorg.conf file.I've tried reinstalling the Compiz files, reinstalled the open-source video drivers, installed/uninstalled fglrx drivers a few times, rebooted dozens of times.
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Nov 14, 2010
Though I had solved this but I was premature. Here are the details. When I use HDMI to connect to my lcd TV it works fine in Windows7. (I have dual partitions W7/Ubuntu),but when I boot into Ubuntu and use HDMI, nothing happens.
lori@lori-laptop:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
[Code]...
also when I open the Gnome Alsa Mixer, under the HDMI tab, there is just a blank screen. I believe I have the latest Alsa releases.
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