Networking :: VPN Failing On Ubuntu 10.04?
May 20, 2010
I have just upgraded to Ubuntu 10.04 and need to setup VPN connections to clients.
After configuring one of the vpn connections, I tried to connect but the connection fails with no specific errors.
Looking at the /var/log/messages file I get the entries as follows:
ay 20 13:52:28 machielr-laptop pppd[3362]: Plugin /usr/lib/pppd/2.4.5//nm-pptp-pppd-plugin.so loaded.
May 20 13:52:28 machielr-laptop pppd[3362]: pppd 2.4.5 started by root, uid 0
May 20 13:52:28 machielr-laptop pppd[3362]: Using interface ppp0
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May 30, 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).
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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Sep 10, 2010
I got this working om my laptop but on my desktop this keeps going wrong, its an upgraded system to 10.04. Made a standard pptp connection using network-manager (and the connection is 100% fine, working on laptop and on windoooz machine) This is syslog any ideas, i reinstalled network-manager-pptp and pptp-gnome, but no go no go..
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Feb 17, 2011
I am trying to write a little port knocking daemon that needs to see every failed connection attempt on every port on the system. The primary way to do this (as the Wikipedia page points out) is to monitor the firewall log file. I am using UFW and reading its output in /var/log/kern.log. Typically, when UFW blocks something, it prints a little line like this:
Quote:
Feb 17 10:42:42 serin kernel: [323588.279588] [UFW BLOCK INPUT]: IN=eth0 OUT= MAC=00:0b:e6:00:85:96:00:09:5b:9f:41:a4:08:00 SRC=192.168.0.4 DST=192.168.0.8 LEN=60 TOS=0x00 PREC=0x20 TTL=49 ID=46945 PROTO=TCP SPT=56849 DPT=1723 WINDOW=5840 RES=0x00 SYN URGP=0
But it seems that whenever UFW experiences a significant "load" (my client sends eight packets over the span of about 25 seconds, not too significant if you ask me), it just kind of "gives up" after 10 or so attempts. Log messages stop appearing in kern.log. I know the packets are coming; wireshark confirms this.
It seems to me that a buffer of some sort is filling up, because if I give the system a breather and try sending my sequence again in, say, three minutes, it prints log messages for 10-12 straight attempts before giving up again. I've tried sending packets at longer intervals and reading from other logs like /var/log/messages, but none of this has helped. Does anyone have any idea why UFW would fail to log all blocked connection attempts?
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Feb 8, 2010
is that my ar928x atheros wireless connection is severely slow. To fix it I've heard ndiswrap and so I've downloaded the XP driver from HP's support site (a pavilion dv7-1450us Notebook PC) and met a brick wall. The file is sp45222.exe and it contains seemingly no .bin .inf or .sys files that ndiswrap dearly requires. I've tried extracting it on a windows machine with UniExtract. This gives only three files one of which UniExtract can extract into a compilation of folders none of which have the required files. I've also attempted to use cabextract on my Ubuntubox, but not cabs come out. I have unshield, if that's relevant at all. What on Earth am I doing wrong?
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Mar 6, 2010
I'm using Kubuntu 9.10, my pppd version is 2.4.5 and pptp is 1.7.2 I'm trying to connect to the iPredator VPN service, but I keep running into problems with LCP. I've tried using knetworkmanager, nm-applet, kvpnc and plain old text-based configuration to no avail. Here's a snippet of pppd's output:
[Code].....
(I've got "defaultroute" in my /etc/ppp/peers/ipred config file.) Any ideas what could be causing this? Could it even be my router? It claims to support PPTP, but considering it claims a lot of other things which aren't true, I wouldn't be surprised if it was the culprit.
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Dec 20, 2010
I have an external HD attached to my desktop and setup as a shared resource. I want to be able to access it from my laptop as well. After much trying and drinking, I ended up with this in fstab:
//crackbox/seagate /seagate -o
then began giving me an error about not recognizing the file system type. I've been reading everything I can find and trying to get it to work, and have come up with very little. My fstab now contains this line instead of the above:
[code]...
Now, when I reload fstab with "sudo mount -a", I get this output:
[code]...
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May 17, 2010
I am trying to connect to an OpenVPN connection using the gnome-network manager. I'd like to point out that using the configuration file in /etc/openvpn works perfectly but I have no way of knowing if the connection has dropped. When I set up the connection in the nm it connects for a few seconds then fails. The /var/log/messages file shows this:
May 17 08:31:37 lucid64 kernel: [ 4594.043637] tun0: Disabled Privacy Extensions
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Sep 1, 2010
My ubuntu system has been running really well until this morning - software update prompt appeared on the screen, so I ran with it and let it do its thing. A while after this, my WiFi network connection started failing. I've tried rebooting and then it can take up to five minutes or more for the password (keychain) prompt to appear. Once I have typed in the password the network connection starts to work. Then cuts out. Works. Then fails again.
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Jun 11, 2009
I have configured a Fedora 10 server on a mixed Win / ix network but am unable to get DNS to resolve on my Fedora boxes.My DHCP is provided from a D-Link 108G Router - but this will not provide DNS.Therefore I have tried to configure dnsmask to provide just DNS and not DHCP. I can ping around my 192.168.1.x network by IP but not name
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Nov 5, 2010
I have a couple VPNs I use for work, and after installing F14 x86_64 it is failing:
Code:
Nov 5 12:40:57 raykj NetworkManager[4106]: <info> VPN service 'vpnc' started (org.freedesktop.NetworkManager.vpnc), PID 4203
Nov 5 12:40:57 raykj NetworkManager[4106]: <info> VPN service 'vpnc' appeared; activating connections
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Jan 21, 2010
I'm having some trouble with getting my DHCP service up and running on my server. Below is my /etc/dhcpd.conf file, which I believe is the right file necessary to get this service up and running correctly. When I do service dhcpd restart it just show in red letter [Failed] next to it.
Code:
ddns-update-style interim;
ignore client-updates;
subnet 10.2.3.1 netmask 255.0.0.0 {
# --- default gateway
#option routers 10.2.1.1;
#option subnet-mask255.0.0.0;
#option nis-domain"domain.org";
#option domain-name"domain.org";
#option domain-name-servers10.7.8.1;
option time-offset-18000;# Eastern Standard Time
#option ntp-servers192.168.1.1;
#option netbios-name-servers192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
#option netbios-node-type 2;
range dynamic-bootp 10.2.3.2 10.2.3.254;
default-lease-time 21600;
max-lease-time 43200;
# we want the nameserver to appear at a fixed address
#host ns {
#next-server marvin.redhat.com;
#hardware ethernet 12:34:56:78:AB:CD;
#fixed-address 207.175.42.254; } }
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Mar 5, 2011
I have recently installed CentOS onto an old machine to get it up and running as a basic web/mail server. Originally the Network Interface worked ok, however I have been editing /etc/sysconfig/network-scripts/ifcfg-eth0 to try and set the IP address to be static.Now when I run the 'service network restart' command it won't bring the eth0 interface up and comes up with the following errors;
ifcfg-eth0 Line 3 DEVICE: command not found
missing config file ifcfg-ifcfg-eth0
It doesn't seem to like any of the command words, even though most of these were in the original file that worked and the ones I added to do static I have commented out.
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Feb 4, 2011
For some reason my DNS servers aren't able to resolve certain names. Most names resolve fine there are just a few that don't work. Nslookup doesn't work either of course, and curiously neither does "whois".
Here's an example:
Quote:
dig facebookmail.com +trace
; <<>> DiG 9.2.4 <<>> facebookmail.com +trace
;; global options: printcmd
[code]...
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Jul 21, 2009
I tried fix I pointed here http://fedoramobile.org/Members/MrHappy/troubleshootingNetworkManager fails to see wireless networks with Intel 3945 chipsets(solution deals with the kernel module not with NetworkManager)but nothing to do. My actual problem is I can't see my wireless network but I see just those of my neighbours.I know mine is working because I can connect to using a Mac and windows.
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Jan 26, 2011
I am unable to connect to internet using my cell phone(sony ericsson X1i xperia). When i connect from wired internet it connects without a problem. What settings should i change/ programmes to execute? Thank u in unticipation
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Jan 25, 2011
We have two recently installed centos machines, each running 5.5, and hosting an elastix pabx distro as well as a Virtual PC instance. On both machines, the network adaptor fails completely every week or so. As they are remote machines, the only option we have when this happens is a manual reboot.
I might be barking up the wrong tree here, but the only significant difference on these machines to others we have deployed is the Virtual PC instance. The machines have dual ethernet ports, with one assigned to the virtual PC. When the network failure occurs, it does not effect the virtual machine, which continues along merrily.
My expert colleague does not think so, but can anyone think of any way that our configuration could be causing the problem? If not, does anyone have any ideas on what the problem could be, or where I would start looking for information on the machine to debug the issue?
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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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Aug 1, 2010
I'm running an up-to-date Fedora 12 machine with the Gnome desktop (meaning with Network Manager). My network connection is a wired ethernet to a switch which then connects to a Netgear router. For some reason, this machine can't renew its leases with DHCP, so NetworkManager deactivates eth0, taking my machine off the network. I have to click Network Manager and enable eth0, which seems to work every time.
How can I fix it? Here are the relevant bits from /var/log/messages showing a failed DHCP request and then the successful renewal.
Code:
Aug 1 04:00:08 ironton dhclient[12452]: DHCPREQUEST on eth0 to 192.168.1.1 port 67
Aug 1 04:00:08 ironton dhclient[12452]: DHCPNAK from 192.168.1.1
Aug 1 04:00:08 ironton NetworkManager[1261]: <info> (eth0): DHCPv4 state changed reboot -> expire
Aug 1 04:00:08 ironton NetworkManager[1261]: <info> (eth0): device state change: 8 -> 9 (reason 6)
Aug 1 04:00:08 ironton NetworkManager[1261]: <info> Marking connection 'System eth0' invalid because IP configuration expired.
[Code]...
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Aug 15, 2010
recently logging in become a bit unreliable - i thought i was mis-typing the passwords but on closer looking the passwords were ok (faulty passwords produces "authentication failure) Using the correct passwords the screen blanks for a second and then returns to the list of possible logins. I cannot log in except as one of the children - could this be because their logins have been used less often and less recently Everything was working well and I have not knowingly changed anything except the passwords after the problems started in order to solve what i thought was a simple mis-typing problem
I can log in as the children but their logins obviously do not have permission to do much
I also have a bootable puppy CD Unfortunately I am also a total noob but determined not to backslide into XP because up to now Ubuntu has been fantastic
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Feb 28, 2011
I am attempting to install Ubuntu 64-bit and it keeps failing. This is my first 64-bit system, and have not had problems with installing x86 Ubuntu in the past. When the full install failed, I tried installing it within Windows and that also failed. I've attached the log from that attempt in this post (had to trim it down to fit the file limit though). I don't know if these are the same errors I was getting on full install as I didn't write those errors down...I can try again and post them if needed though.
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Mar 22, 2011
So I downloaded 10.10 x86 ISO, MD5'd it and it all looks okay. I am using a decent LITEon DVD-RW drive (no errors before with ISOs) and using DeepBurner (also no errors before) and it keeps failing at 88% :
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Mar 12, 2011
I fallowed the directions on How to Setup a VPN (PPTP) Server on Debian Linux and How to Setup a Split Tunnel VPN (PPTP) Client on Ubuntu 10.04 to set up a LAN vpn, but it keeps on failing to connect. Can it do a LAN VPN? What else can I install that has an easy setup.
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Jan 23, 2010
My router has a firewall up and running as standard. I have installed Firestarter and can see a number of pings on the firewall
[code]...
Does this mean that my hardware firewall is failing in its job?
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May 2, 2010
I have been FRUSTRATINGLY trying to upgrade to 10.04 because I was impressed with it, however, as I have predicted, it was a headache. In all actuality, it is WORSE than a headache. Both my desktop and laptop are now decommissioned, (I have Windows 7 on the 2nd laptop, and since Ubuntu/GRUB hasn't installed completely, it won't boot--I have to fix that TOO) leaving me to depend on an old Pentium III in the closet to download and burn CD images, which is STILL failing. Unfortunately, I have burned 9.10 on a rewritable CD, which I erased long ago. I have NO computer now, other than the old Pentium III which was sitting in a closet. I am tired and want to go to sleep, but I am the kind of person who finishes things that were started.
My problem is that I have downloaded (and burned to a CD) Ubuntu 10.04 TWICE, because it's failed to install. I thought that the ISO was corrupted, so I downloaded it and installed it AGAIN. Same thing. I tried making a Live USB Flashdrive install--same old, same old. It's 12:00 MIDNIGHT (Pacific time) and I can't bear to stay up this long like some of you young ones can. Thank goodness for caffeine
I KNEW that I shouldn't have done this, but I went ahead and proceeded to "upgrade". Well, the actual upgrade (thru Ubuntu Update tool) failed, so I decided to do a clean install. Thought that the process, from start to finish, would take 30-40 minutes, but was I wrong! I have been stuck with this issue since 7 P.M.!
Well, to cut to the chase, is anyone else having issues with burning/installing from their own CDs? This Pentium III is only running Fedora Core 6 with 512MB of memory, so it can get a download/burn job done OK. I am using the K3b burner in Fedora and no errors regarding a corrupted ISO appear. Why then, won't it install, after downloading and burning two separate ISOs?
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Jun 10, 2010
I have created a VPN through network manager to a Windows 2003 server.
However when I try connecting it fails every time, I have tested with a windows XP client and this works so this would indicate I am doing something wrong in the network manager configuration.
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Sep 30, 2010
I try to install virtualbox through software center, but it just doesn't install.
Code:
installArchives() failed: Selecting previously deselected package virtualbox-ose.
(Reading database ...
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
[Code]....
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Nov 28, 2010
extract some data off a failing drive the other day. I plugged it in, but got no response in windows or linux (partition is ntfs), but it does appear in the bios and /dev (though the hdd hung most linux liveCDs except rescue remix 9.04). I tried to analyze the drive, and found good smart data, so I figured there were just a few bad blocks in critical places. I ran spinrite against it in level 2 mode. the process crawled (40MB after 2 hours) and it updated the smart data to reflect many many reallocated sectors, putting the drive into a failing state as far as smart is concerned. so, now, in a last ditch effort I am turning to ddrescue to try to get an image of the drive. it's been running about 17 hours now, and has done several complete passes through "Splitting error areas".
here is my current output:
Code:
Disk /dev/sdb: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
[code]....
have I done all I can? can I in good conscious declare this a lost cause? I do have an image from a prior run of ddrescue, with 826 MB of data.
edit: I resumed the task from log, and now it is reporting the err size as 9223 PB. since the drive is a 320GB, I find that a bit odd.
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Apr 28, 2011
Trying to upgrade from 10.10 to 11.04 but it keeps giving me errors... such as:
An unresolvable problem occurred while calculating the upgrade.
Please report this bug against the 'update-manager' package and include the following error message:
I've attached a gzipped copy of my dist-upgrade folder, anybody have any ideas what's going on?
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May 6, 2011
I installed the latest Ubuntu last night and have some issues with Unity. Firstly, when I open Deluge (which I've been using for about a year now) and click to close it, I can't seem to reopen it. Usually when I clicked the close button it didn't close Deluge, it merely moved it to the background.Secondly, when I open some programs (it has happened with Thunderbird, Compiz and the Help file), the top menu bar falls away. I don't mean it disappears in full screen (as it should), I mean it goes transparent and I can't click on it anymore after closing said software.
Finally, a little thing that is bothering me and I hope I'm not the only one: is there any way to move the new dock/panel to another side of the screen? I hate it on the left of the screen and I find it quite annoying that I can't fully customise it. For instance, the icons are way too big and I can only reduce them down to 32px using compiz. I find it fairly hard to navigate ubuntu now that I don't have direct access to all my folders and programs (yes, there is the dash, but that's actually more effort in my opinion...) I also can't add folders like my 'Downloads' folder. Is there some way of better customising Unity or some piece of software that might let me go into the finer details? I am very much an Ubuntu noob, so it would have to be something that's fairly user friendly
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