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• HP Pavilion tx2000 - Wifi adapter no longer works after moving from 12.04 to a 12.10 clean install

  - by Marek L.

  I have a HP Pavilion tx2000 that I have been running Ubuntu 12.04 on for a couple of months without any problems (wifi worked great) until yesterday when my hard drive failed. I replaced the hard drive and decided to install Ubuntu 12.10. Unlike 12.04, the wifi did not work after the installation finished and all the updates where installed (over Ethernet). The network drop down in the top right didn't even show a wireless option. I Googled about for a bit and found some solutions that seemed like they might work. Unfortunately they did not. Here is what I tried: sudo apt-get remove bcmwl-kernel-source sudo apt-get install b43-fwcutter sudo apt-get install firmware-b43-lpphy-installer Restart the computer. And the wifi still didn't work. At which point I panicked a bit and tried to undo the previous commands by running: sudo apt-get remove b43-fwcutter firmware-b43-lpphy-installer sudo apt-get install bcmwl-kernel-source Restart the computer. The wifi still doesn't work. This is where I stopped because I have no idea what I am doing and don't want to mess something up. The network drop down still doesn't show a wireless option and the hardware wifi switch on the laptop is amber (it turns blue when the wifi is on). Using the hardware switch does not change the color. Output from: sudo lspci ... 08:00.0 Network controller: Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller (rev 01) ... Output from: sudo lshw -class network *-network UNCLAIMED description: Network controller product: BCM4322 802.11a/b/g/n Wireless LAN Controller vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:08:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:d1100000-d1103fff ... Output from: sudo rfkill list all 0: hp-wifi: Wireless LAN Soft blocked: no Hard blocked: yes UPDATE: After writing up this question tried the following command: sudo rfkill unblock all At first it didn't do anything but after running it about four times, sudo rfkill list all now returns: 0: hp-wifi: Wireless LAN Soft blocked: no Hard blocked: no But the network menu still does not have a wireless option and the hardware switch still glows amber. Pushing the hardware switch turns the hard block back on and I have to run sudo rfkill unblock all multiple times again to turn it off. Any help is appreciated! Update 2: Full output from sudo lspci -nn: 00:00.0 Host bridge [0600]: Advanced Micro Devices [AMD] RS780 Host Bridge [1022:9600] 00:01.0 PCI bridge [0604]: Advanced Micro Devices [AMD] RS780/RS880 PCI to PCI bridge (int gfx) [1022:9602] 00:04.0 PCI bridge [0604]: Advanced Micro Devices [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 0) [1022:9604] 00:05.0 PCI bridge [0604]: Advanced Micro Devices [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 1) [1022:9605] 00:06.0 PCI bridge [0604]: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 2) [1022:9606] 00:11.0 SATA controller [0106]: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] [1002:4391] 00:12.0 USB controller [0c03]: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller [1002:4397] 00:12.1 USB controller [0c03]: Advanced Micro Devices [AMD] nee ATI SB7x0 USB OHCI1 Controller [1002:4398] 00:12.2 USB controller [0c03]: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller [1002:4396] 00:13.0 USB controller [0c03]: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller [1002:4397] 00:13.1 USB controller [0c03]: Advanced Micro Devices [AMD] nee ATI SB7x0 USB OHCI1 Controller [1002:4398] 00:13.2 USB controller [0c03]: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller [1002:4396] 00:14.0 SMBus [0c05]: Advanced Micro Devices [AMD] nee ATI SBx00 SMBus Controller [1002:4385] (rev 3a) 00:14.1 IDE interface [0101]: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 IDE Controller [1002:439c] 00:14.2 Audio device [0403]: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) [1002:4383] 00:14.3 ISA bridge [0601]: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 LPC host controller [1002:439d] 00:14.4 PCI bridge [0604]: Advanced Micro Devices [AMD] nee ATI SBx00 PCI to PCI Bridge [1002:4384] 00:14.5 USB controller [0c03]: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI2 Controller [1002:4399] 00:18.0 Host bridge [0600]: Advanced Micro Devices [AMD] Family 11h Processor HyperTransport Configuration [1022:1300] (rev 40) 00:18.1 Host bridge [0600]: Advanced Micro Devices [AMD] Family 11h Processor Address Map [1022:1301] 00:18.2 Host bridge [0600]: Advanced Micro Devices [AMD] Family 11h Processor DRAM Controller [1022:1302] 00:18.3 Host bridge [0600]: Advanced Micro Devices [AMD] Family 11h Processor Miscellaneous Control [1022:1303] 00:18.4 Host bridge [0600]: Advanced Micro Devices [AMD] Family 11h Processor Link Control [1022:1304] 01:05.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI RS780M/RS780MN [Mobility Radeon HD 3200 Graphics] [1002:9612] 08:00.0 Network controller [0280]: Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller [14e4:432b] (rev 01) 09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 02)

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• boot issues - long delay, then "gave up waiting for root device"

  - by chazomaticus

  I've had this issue on and off for about two years now. I noticed it on a new (custom built) machine running 10.04 when that first came out, but then it went away until a few months ago. I've gone through a number of hard drive changes but I can't say specifically what if anything I changed hardware-wise to make it stop or start happening. I had assumed upgrading to a modern Ubuntu version would fix the issue, so I installed 12.04 beta on a spare partition last night, but it's still happening. Here's the issue. After grub loads and I select a kernel to boot, the screen goes blank save for a blinking cursor. It sits in this state for many long minutes before it finally gives up and gives me an initramfs shell with the message gave up waiting for root device (and lists the /dev/disk/by-uuid/... path it was waiting for) but no other specific diagnostic information. Now, here's the tricky part. For one, the problem is intermittent - sometimes it progresses from the blinking cursor to the Ubuntu splash boot screen in a few seconds, and once it gets that far it always continues booting fine. The really bizarre thing is that I can "force" it to "find" the root device by repeatedly pressing the space bar and hitting the machine's power button. If I tap those enough, eventually I will notice the hard drive light coming on, at which point it will always continue the boot process after a few seconds. Interestingly, if I wait slightly too long before pressing the power button (30s?), as soon as I press it I get the gave up waiting message and the initramfs shell. I've tried setting up /etc/fstab (and the grub menu.lst or whatever it's called nowadays) to use device names (e.g. /dev/sda1) instead of UUIDs, but I get the same effect just with the device name, not UUID, in the error message. I should also mention that when I boot to Windows 7, there is no issue. It boots slowly all the time just by virtue of being Windows, but it never hangs indefinitely. This would seem to indicate it's a problem in Ubuntu, not the hardware. It's pretty annoying to have to babysit the computer every time it boots. Any ideas? I'm at a loss. Not even sure how to diagnose the issue. Thanks! EDIT: Here's some dmesg output from 10.04. The 15 second gap is where it was doing nothing. I pressed the power button and space bar a few times, and the stuff at 16 seconds happened. Not sure what any of it means. [ 1.320250] scsi18 : ahci [ 1.320294] scsi19 : ahci [ 1.320320] ata19: SATA max UDMA/133 abar m8192@0xfd4fe000 port 0xfd4fe100 ir q 18 [ 1.320323] ata20: SATA max UDMA/133 abar m8192@0xfd4fe000 port 0xfd4fe180 ir q 18 [ 1.403886] usb 2-4: new high speed USB device using ehci_hcd and address 4 [ 1.562558] usb 2-4: configuration #1 chosen from 1 choice [ 16.477824] ata16: SATA link down (SStatus 0 SControl 300) [ 16.477843] ata19: SATA link down (SStatus 0 SControl 300) [ 16.477857] ata3: SATA link down (SStatus 0 SControl 300) [ 16.477895] ata15: SATA link down (SStatus 0 SControl 300) [ 16.477906] ata20: SATA link down (SStatus 0 SControl 300) [ 16.477977] ata17: SATA link down (SStatus 0 SControl 300) [ 16.478003] ata12: SATA link down (SStatus 0 SControl 300) [ 16.478046] ata13: SATA link down (SStatus 0 SControl 300) [ 16.478063] ata14: SATA link down (SStatus 0 SControl 300) [ 16.478108] ata11: SATA link down (SStatus 0 SControl 300) [ 16.478123] ata18: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 16.478127] ata6: SATA link down (SStatus 0 SControl 300) [ 16.478157] ata5: SATA link down (SStatus 0 SControl 300) [ 16.478193] ata18.00: ATAPI: MARVELL VIRTUALL, 1.09, max UDMA/66 After that, it took its sweet time, and I had to keep hitting space bar to coax it along. Here's some more dmesg output from a little later in the boot process: [ 17.982291] input: BTC USB Multimedia Keyboard as /devices/pci0000:00/0000:00 :13.0/usb5/5-2/5-2:1.0/input/input4 [ 17.982335] generic-usb 0003:046E:5506.0002: input,hidraw1: USB HID v1.10 Key board [BTC USB Multimedia Keyboard] on usb-0000:00:13.0-2/input0 [ 18.005211] input: BTC USB Multimedia Keyboard as /devices/pci0000:00/0000:00 :13.0/usb5/5-2/5-2:1.1/input/input5 [ 18.005274] generic-usb 0003:046E:5506.0003: input,hiddev96,hidraw2: USB HID v1.10 Device [BTC USB Multimedia Keyboard] on usb-0000:00:13.0-2/input1 [ 22.484906] EXT4-fs (sda6): INFO: recovery required on readonly filesystem [ 22.484910] EXT4-fs (sda6): write access will be enabled during recovery [ 22.548542] EXT4-fs (sda6): recovery complete [ 22.549074] EXT4-fs (sda6): mounted filesystem with ordered data mode [ 32.516772] Adding 20482832k swap on /dev/sda5. Priority:-1 extents:1 across:20482832k [ 32.742540] udev: starting version 151 [ 33.002004] Bluetooth: Atheros AR30xx firmware driver ver 1.0 [ 33.008135] parport_pc 00:09: reported by Plug and Play ACPI [ 33.008186] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE] [ 33.012076] lp: driver loaded but no devices found [ 33.037271] ppdev: user-space parallel port driver [ 33.090256] lp0: using parport0 (interrupt-driven). Any clues in there?

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• Part 4 of 4 : Tips/Tricks for Silverlight Developers.

  - by mbcrump

  Part 1 | Part 2 | Part 3 | Part 4 I wanted to create a series of blog post that gets right to the point and is aimed specifically at Silverlight Developers. The most important things I want this series to answer is : What is it?  Why do I care? How do I do it? I hope that you enjoy this series. Let’s get started: Tip/Trick #16) What is it? Find out version information about Silverlight and which WebKit it is using by going to http://issilverlightinstalled.com/scriptverify/. Why do I care? I’ve had those users that its just easier to give them a site and say copy/paste the line that says User Agent in order to troubleshoot a Silverlight problem. I’ve also been debugging my own Silverlight applications and needed an easy way to determine if the plugin is disabled or not. How do I do it: Simply navigate to http://issilverlightinstalled.com/scriptverify/ and hit the Verify button. An example screenshot is located below: Results from Chrome 7 Results from Internet Explorer 8 (With Silverlight Disabled) Tip/Trick #17) What is it? Use Lambdas whenever you can. Why do I care?  It is my personal opinion that code is easier to read using Lambdas after you get past the syntax. How do I do it: For example: You may write code like the following: void MainPage_Loaded(object sender, RoutedEventArgs e) { //Check and see if we have a newer .XAP file on the server Application.Current.CheckAndDownloadUpdateAsync(); Application.Current.CheckAndDownloadUpdateCompleted += new CheckAndDownloadUpdateCompletedEventHandler(Current_CheckAndDownloadUpdateCompleted); } void Current_CheckAndDownloadUpdateCompleted(object sender, CheckAndDownloadUpdateCompletedEventArgs e) { if (e.UpdateAvailable) { MessageBox.Show( "An update has been installed. To see the updates please exit and restart the application"); } } To me this style forces me to look for the other Method to see what the code is actually doing. The style located below is much easier to read in my opinion and does the exact same thing. void MainPage_Loaded(object sender, RoutedEventArgs e) { //Check and see if we have a newer .XAP file on the server Application.Current.CheckAndDownloadUpdateAsync(); Application.Current.CheckAndDownloadUpdateCompleted += (s, e) => { if (e.UpdateAvailable) { MessageBox.Show( "An update has been installed. To see the updates please exit and restart the application"); } }; } Tip/Trick #18) What is it? Prevent development Web Service references from breaking when Visual Studio auto generates a new port number. Why do I care?  We have all been there, we are developing a Silverlight Application and all of a sudden our development web services break. We check and find out that the local port number that Visual Studio assigned has changed and now we need up to update all of our service references. We need a way to stop this. How do I do it: This can actually be prevented with just a few mouse click. Right click on your web solution and goto properties. Click the tab that says, Web. You just need to click the radio button and specify a port number. Now you won’t be bothered with that anymore. Tip/Trick #19) What is it? You can disable the Close Button a ChildWindow. Why do I care?  I wouldn’t blog about it if I hadn’t seen it. Devs trying to override keystrokes to prevent users from closing a Child Window. How do I do it: A property exist on the ChildWindow called “HasCloseButton”, you simply change that to false and your close button is gone. You can delete the “Cancel” button and add some logic to the OK button if you want the user to respond before proceeding. Tip/Trick #20) What is it? Cleanup your XAML. Why do I care?  By removing unneeded namespaces, not naming all of your controls and getting rid of designer markup you can improve code quality and readability. How do I do it: (This is a 3 in one tip) Remove unused Designer markup: 1) Have you ever wondered what the following code snippet does? xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480" This code is telling the designer to do something special with this page in “Design mode” Specifically the width and the height of the page. When its running in the browser it will not use this information and it is actually ignored by the XAML parser. In other words, if you don’t need it then delete it. 2) If you are not using a namespace then remove it. In the code sample below, I am using Resharper which will tell me the ones that I’m not using by the grayed out line below. If you don’t have resharper you can look in your XAML and manually remove the unneeded namespaces. 3) Don’t name an control unless you actually need to refer to it in procedural code. If you name a control you will take a slight performance hit that is totally unnecessary if its not being called. <TextBlock Height="23" Text="TextBlock" />   That is the end of the series. I hope that you enjoyed it and please check out Part 1 | Part 2 | Part 3 if your hungry for more.  Subscribe to my feed CodeProject

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• xt_TCPMSS: bad length messages

  - by Matic

  I'm getting loads of messages like: Jun 23 10:24:20 awakening kernel: [ 1691.596823] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:21 awakening kernel: [ 1692.663362] xt_TCPMSS: bad length (1448 bytes) Jun 23 10:24:21 awakening kernel: [ 1692.663495] xt_TCPMSS: bad length (1448 bytes) Jun 23 10:24:21 awakening kernel: [ 1692.663588] xt_TCPMSS: bad length (1448 bytes) Jun 23 10:24:21 awakening kernel: [ 1692.663671] xt_TCPMSS: bad length (1440 bytes) Jun 23 10:24:26 awakening kernel: [ 1697.062914] xt_TCPMSS: bad length (474 bytes) Jun 23 10:24:26 awakening kernel: [ 1697.305525] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:27 awakening kernel: [ 1698.946633] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:36 awakening kernel: [ 1707.481198] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:37 awakening kernel: [ 1708.723526] xt_TCPMSS: bad length (805 bytes) Jun 23 10:24:38 awakening kernel: [ 1709.599461] xt_TCPMSS: bad length (805 bytes) Jun 23 10:24:41 awakening kernel: [ 1712.211052] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:41 awakening kernel: [ 1712.260588] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:41 awakening kernel: [ 1712.976058] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:43 awakening kernel: [ 1714.225209] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:43 awakening kernel: [ 1714.914961] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:55 awakening kernel: [ 1726.192696] xt_TCPMSS: bad length (1480 bytes) Jun 23 10:24:55 awakening kernel: [ 1726.192825] xt_TCPMSS: bad length (1480 bytes) In my dmesg/syslog. This linux machine is among other things used as an internet gateway. Connection is over PPPoE. I have the following line in my iptables script: $IPT -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu # PPPoE fix The frequency of this messages increased 10x when I upgraded from Debian lenny with 2.6.27 to squeeze with 2.6.32 few days ago. Why am I seeing this messages and how can I fix them?

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• Access to message queuing system is denied MSMQ?

  - by user1401694

  My problem is a little confusing. I have 2 servers (Windows Server 2008 R2) with MSMQ installed and I want to use Server B to consume a MessageQueue on Server A. When I try to Receive it always throws a message error: "Access to message queuing system is denied.". IP between them. Server A: 172.31.23.130 Server B: 172.31.23.195 FormatName:Direct=TCP:172.31.23.195\private$\queuesource (It's working for Sends) I can ping each server from the other; The firewall is disabled; The "queuesource" has Full Control to "Everyone", "Anonymous Logon", "Network", "Network Services"; Journal is disabled; Authentication is ok; The queue is Transactional. My code in .Net C# is basically like this: MessageQueue _sourceQueue = new MessageQueue(); _sourceQueue.Path = "FormatName:Direct=TCP:172.31.23.195\private$\queuesource"; _sourceQueue.Receive(); // << here throw an exception. Actually I'm using the Private Queue only to avoid Active Directory's problems. For example, if the server DNS fail all network fail. I don't know what do anymore.

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• How to disable windows server 2008 timestamp response

  - by Cal

  Posted this question on stackoverflow but then got instructed to post it here: I was using Rapid7's Nexpose to scan one of our web servers (windows server 2008), and got a vulnerability for timestamp response. According to Rapid7, timestamp response shall be disabled: http://www.rapid7.com/db/vulnerabilities/generic-tcp-timestamp So far I have tried several things: Edit the registry, add a "Tcp1323Opts" key to HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters, and set it to 0. http://technet.microsoft.com/en-us/library/cc938205.aspx Use this command: netsh int tcp set global timestamps=disabled Tried powershell command: Set-netTCPsetting -SettingName InternetCustom -Timestamps disabled (got error: Set-netTCPsetting : The term 'Set-netTCPsetting' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.) None of above attempts was successful, after re-scan we still got the same alert. Rapid7 suggested using a firewall that's capable of blocking it, but we want to know if there is a setting on windows to achieve it. Is it through a specific port? If yes, what is the port number? If not, could you suggest a 3rd party firewall that is capable of blocking it? Thank you very much.

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• Windows Server 2008R2 - can't change or remove the default gateway

  - by disserman

  We've installed VMWare Server 2.0 on Windows 2008R2. After some time playing with it (actually only removing host-only and nat networks, and binding adapters to the specified vmnets) we've noticed a strange problem: if you change or remove the default gateway on the network card, the server completely loses a network connection you can't ping it from the subnet, it also can't connect to anyone. When the gateway is removed and a server tries to connect to the other machines, I can see some incoming packets using a sniffer, but I believe they are damaged in some kind (I'm not a mega-guru in TCP/IP and can't find a mistake in a binary translation of the packet) because the other side doesn't respond. What we tried: removed vmware server using add/remove programs deleted everything related to the vmware server and all installed network adapters in the windows registry double checked for the vmware bridged protocol driver file, it's physically absent and no any links in the registry. performed a tcp/ip reset with netsh and disabled/enabled all network adapters in the device manager to recreate a registry keys for them. tried another network adapter. and the situation is the same: as soon you remove or change the default gateway, windows stops working. The total absurd of the situation is that the default gateway points to the non-existing IP. But when it's set, you can ping a server from the subnet, when you remove it - you can't. Any help? I'm starting thinking the new build of the VMWare Server is some kind of the malware... :)

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• Unexpected behaviour when dynamically add node in HAproxy server

  - by Anand Soni

  I wanted to use HAProxy for my web app for load balancing purpose. I am trying to add a new rabbitmq node dynamically in HAProxy server using command : haproxy -p /var/run/haproxy.pid -sf $(cat /var/run/haproxy.pid). I am doing tcp connection mode with leastconn balance algorithm in load balancing. What is expected is when there is 3 connection in one rabbitmq, I add a new rabbit server in HAProxy server. so the next connection would pass to 2nd rabbitmq server which is not happening in my case. It distributes the connection in haphazardly manner. Here is my config file: defaults log global mode http option httplog option dontlognull retries 3 option redispatch maxconn 2000 contimeout 5000 clitimeout 5000 srvtimeout 5000 listen rabbitmq 0.0.0.0:5672 mode tcp stats enable balance leastconn option tcplog server rabbit01 xx.xx.xx.xx:5672 check server rabbit02 xx.xx.xx.xx:5672 check listen tomcatq 0.0.0.0:80 mode http stats enable balance roundrobin stats refresh 10s stats refresh 10s stats uri /lb?stats stats auth admin:admin option httplog What is the problem causing this behavior? Any suggestion will appreciated.

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• Improving Performance of RDP Over LAN

  - by Jared Brown

  Architecture: A deployment of 6 new HP thin clients (Windows XP Embedded) with TCP/IP access to several new HP servers (Windows 2003 Server). Each thin client is connected over fiber optic to a Gigabit Cisco switch, which the servers are connected to. There are 10/100 Ethernet to fiber converter boxes on each end of the fiber cables. Problem: Noticeable lag over RDP while using the Unigraphics CAD package. 3D models take .5 to 1 second to respond to mouse actions. Other Details: Network throughput on each thin client's RDP session is 7288 kbps. RDP connection settings - color setting: 15k, all themes, etc. turned off. Local and remote system performance stats are well within norms (CPU, Memory, and Network). Question: Are there newer versions of terminal services or RDP I can use on my existing OSes? Are there compression algorithms, etc. that are well suited for a high-bandwidth LAN? Are there valid alternatives that will yield higher performance (i.e. UltraVNC with drivers installed)? Are there TCP/IP tuning options I can exploit?

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• Problems configuring DB2 CLI/ODBC System DSN ODBC Data Source Administrator

  - by Komyg

  I am trying to create a System DSN ODBC connection to a DB2 9.5 database, but I am getting a very strange problem. I've looked through the internet and found the following page that has some instructions on how I should proceed: http://www.ryslander.com/how-to-install-and-configure-db2-odbc-driver/. I followed these instructions and I am able to create a new System DSN, however when I try to configure it it seems as if my configurations don't work at all. For example, when I click on the "Configure" button on my System DSN and I add a TCP/IP protocol configuration on the "Advanced Settings" tab and click "Ok", no errors appear, but when I click on "Configure" again my TCP/IP setting has vanished. This happened to all my other configurations, such as database name, username, password etc. Could you help me figure out what I am doing wrong? Note: my user is in the administrator group and I am using a Windows Server 2008 R2 Enterprise x64. UPDATE I managed to create a User DSN and connect to the database. However the problem with the System DSN remains.

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• fail2ban Error Gentoo

  - by Mark Davidson

  Hi All I've recently setup a new VPS running Gentoo (My first time using the distro so please forgive me is this is a really easy one) and as I've done with other servers installed fail2ban. Setting it up to block the host via iptables, on too many unsuccessful logins with ssh. However I'm getting a strange error that I can't quite solve. When I start fail2ban I get these lines in the error log 2009-11-13 18:02:01,290 fail2ban.jail : INFO Jail 'ssh-iptables' started 2009-11-13 18:02:01,480 fail2ban.actions.action: ERROR iptables -N fail2ban-SSH iptables -A fail2ban-SSH -j RETURN iptables -I INPUT -p tcp --dport ssh -j fail2ban-SSH returned 100 If I try and force a ban these errors show up in the log and the host is not banned 2009-11-13 11:23:26,905 fail2ban.actions: WARNING [ssh-iptables] Ban XXX.XXX.XXX.XXX 2009-11-13 11:23:26,929 fail2ban.actions.action: ERROR iptables -n -L INPUT | grep -q fail2ban-SSH returned 100 2009-11-13 11:23:26,930 fail2ban.actions.action: ERROR Invariant check failed. Trying to restore a sane environment 2009-11-13 11:23:27,007 fail2ban.actions.action: ERROR iptables -N fail2ban-SSH iptables -A fail2ban-SSH -j RETURN iptables -I INPUT -p tcp --dport ssh -j fail2ban-SSH returned 100 2009-11-13 11:23:27,016 fail2ban.actions.action: ERROR iptables -n -L INPUT | grep -q fail2ban-SSH returned 100 2009-11-13 11:23:27,016 fail2ban.actions.action: CRITICAL Unable to restore environment My versions are as follows Linux masked 2.6.18-xen-r12 #2 SMP Wed Mar 4 11:45:03 GMT 2009 x86_64 Intel(R) Xeon(R) CPU E5504 @ 2.00GHz GenuineIntel GNU/Linux net-analyzer/fail2ban-0.8.4 net-firewall/iptables-1.4.3.2 If anyone could shead some light on these errors that would be great, I did wonder if it was a problem with iptables or some kernel modules but I can block an IP if I do. iptables -I INPUT -s 25.55.55.55 -j DROP so makes me think its something a bit more unusual. Thanks a lot in advance

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• Azure can't ping or telnet VM from client

  - by Raif

  I have a VM on Azure with an instance sqlserver 2012 running on it. From my work computer and my home computer I can't get sqlserver management studio connect to it. I have looked at ALL the settings recommended in numerous articles. everything is setup correctly. endpoint 1433 Private and public sqlserver tcp enabled. sqlserver tcp listening on right port sqlserver using mixed auth windows fire wall, holes poked and then disabled on both client and VM can log in from VM using the credentials that I'm trying to use remotely further more I can't ping the dns or ip or tellnet address from my local machines. I can however hit the iis from a browser using the ip. strange. CS asked me to download MS Network Monitor, which I did and pinged and telneted. I have the results saved but can't really make heads or tails of them. CS hasn't responded yet. I can post some info here that would help. EDIT Never one to shrink from a challenge, I deleted my VM and re-did everything. Now it works although my confidence azure is somewhat shaken.

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• Can’t connect to SQL Server 2008 - looks like Shared Memory problem

  - by user38556

  I am unable to connect to my local instance of SQL Server 2008 Express using SQL Server Management Studio. I believe the problem is related to a change I made to the connection protocols. Before the error occurred, I had Shared Memory enabled and Named Pipes and TCP/IP disabled. I then enabled both Named Pipes and TCP/IP, and this is when I started experiencing the problem. When I try to connect to the server with SSMS (with either my SQL server sysadmin login or with windows authentication), I get the following error message: A connection was successfully established with the server, but then an error occurred during the login process. (provider: Named Pipes Provider, error: 0 - No process is on the other end of the pipe.) (Microsoft SQL Server, Error: 233) Why is it returning a Named Pipes error? Why would it not just use Shared Memory, as this has a higher priority order in the list of connection protocols? It seems like it is not listening on Shared Memory for some reason? When I set Named Pipes to enabled and try to connect, I get the same error message. My windows account is does not have administrator priviliges on my computer - perhaps this is making a difference in some way (as some of the discussions in this post about an "SuperSocketNetLib\Lpc" registry key seems to suggest). I have tried restarting the SQL Server service, by the way, and also tried to get someone to log onto the machine with an admin account to restart the SQL Server service. Still no luck.

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• How to kill unkillable Python-processes running as root

  - by Andrei

  I am experiencing an annoying problem with sshuttle running it on 10.7.3, MBA with the latest firmware update -- after I stop it (ctrl+c twice), or loose connection, or close the lid, I cannot restore it until I restart the system. The restarting takes notably more time, than it would normally take. I have tried to flush ipfw rules - not helping. Could you advice me how to restore sshuttle connection (without restarting os)? The following processes remain running as root, which I do not know how to kill (tried sudo kill -9 <pid> with no luck): root 14464 python ./main.py python -v -v --firewall 12296 12296 root 14396 python ./main.py python -v -v --firewall 12297 12297 root 14306 python ./main.py python -v -v --firewall 12298 12298 root 3678 python ./main.py python -v -v --firewall 12299 12299 root 2263 python ./main.py python -v -v --firewall 12300 12300 The command I use to run proxy: ./sshuttle --dns -r [email protected] 10.0.0.0/8 -vv The last message I get trying to restore the connection: ... firewall manager: starting transproxy. s: Ready: 1 r=[4] w=[] x=[] s: < channel=0 cmd=PING len=7 s: > channel=0 cmd=PONG len=7 (fullness=554) s: mux wrote: 15/15 s: Waiting: 1 r=[4] w=[] x=[] (fullness=561/0) >> ipfw -q add 12300 check-state ip from any to any >> ipfw -q add 12300 skipto 12301 tcp from any to 127.0.0.0/8 >> ipfw -q add 12300 fwd 127.0.0.1,12300 tcp from any to 10.0.0.0/8 not ipttl 42 keep-state setup >> ipfw -q add 12300 divert 12300 udp from any to 10.0.1.1/32 53 not ipttl 42 >> ipfw -q add 12300 divert 12300 udp from any 12300 to any not ipttl 42 Update: $ ps -ax|grep python 1611 ?? 0:06.49 python ./main.py python -v -v --firewall 12300 12300 48844 ?? 0:00.05 python ./main.py python -v -v --firewall 12299 12299 49538 ttys000 0:00.00 grep python

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• Windows 2003 Active Directory Integrated DNS zone not registering non-domain computers

  - by Jeff Willener

  I'm not a networking guy by all means, I'm just a developer who dabbles enough to get into trouble and I'm there. So bear with me... :) At my office I have a Windows 2003 Domain Controller which also services DNS. On the domain I have a handful of computers and other misc. equipment/toys. For the DNS I only created a Forward Lookup Zone for my domain (mydomain.com). I run a lot of VM's so generally I have everything on the domain, however some of those VM's are not and only in a 'Workgroup'. I also have another laptop which belongs to another domain (otherdomain.com) which is here 100% but I use it for other purposes and has to belong to the otherdomain.com. With all that said, I have two questions: I have found any computer not on mydomain.com does not register it's IP address even though 'Register this connections address in DNS' is set to in the 'Advanced TCP/IP Settings' for the nic. Where have I messed this up? On the laptop which is registered on otherdomain.com, when I do a nslookup for a computer on mydomain.com (e.g. nslookup devbox1) it appends otherdomain.com as the suffix (e.g. queries devbox1.otherdomain.com). Same thing occurs if I use the fully qualified name. In the 'Advanced TCP/IP Settings' for that nic, I can 'Append these DNS suffixes' of mydomain.com but I fear that will hose my DNS lookups when I VPN to otherdomain.com. So what is the correct approach to resolve this issue? Do I add both mydomain.com and otherdomain.com in that order?

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• How to add commands of windows to local shell of XShell 4

  - by dylanninin

  XShell is a very powerful tools to ssh remote computers such as Unix/Linux. And it has built some internal commands for you to run within your Windows. Xshell:\> help Internal Commands: new: Creates a new session. open: Opens a session or the session dialog box. edit: Opens the Session Property dialog box for a session. list: Lists information of all available sessions. 'ls' and 'dir' do the same. cd: Changes the current working directory. clear: Clears the screen/address/command history. help: Displays this help. '?' does the same. quit: Quits Local Shell. 'exit' does the same. ssh: Connects to a host using the SSH protocol. telnet: Connects to a host using the TELNET protocol. rlogin: Connects to a host using the RLOGIN protocol. sftp: Connects to a host to transfer files securely. ftp: Connects to a host to transfer files. External Commands: ipconfig: Configures TCP/IP network interfaces. ping: Sends ICMP ECHO_REQUEST packets to network hosts. tracert: Prints the route packets take to network host. netstat: Displays current protocol statistics and current TCP/IP network connections. nslookup: Resolves a hostname to IP address. For more information, type 'help command' for each command. ex) help telnet But these commands are limited, so how to add commands of windows to local shell of XShell 4

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• SSH connection times out

  - by mark

  Given: vm - a WinXPsp3 virtual machine hosted by a Win7sp1 physical machine alice is the user on vm srv - a Win2008R2sp1 server bob is the user on srv quake - a linux server mark is the user on quake Both vm and srv have the same new installation of cygwin (1.7.9) and openssh. Firewall service is disabled on vm (and its host) and on srv All the machines can be pinged from all the machines. ssh mark@quake works OK from both vm and srv. ssh bob@srv works OK from both quake and vm. ssh alice@vm works on the vm itself only, but it fails on the other two machines: alice@vm ~ $ ssh alice@vm alice@vm's password: Last login: Tue Oct 25 23:42:09 2011 from vm.shunra.net [mark@Quake ~]$ ssh -vvv alice@vm OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to vm [172.30.2.60] port 22. debug1: connect to address 172.30.2.60 port 22: Connection timed out ssh: connect to host vm port 22: Connection timed out bob@Srv ~ $ ssh -vvv alice@vm OpenSSH_5.9p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /etc/ssh_config debug2: ssh_connect: needpriv 0 debug1: Connecting to vm [172.30.2.60] port 22. debug1: connect to address 172.30.2.60 port 22: Connection timed out ssh: connect to host vm port 22: Connection timed out I used ssh-host-config both on vm and srv to configure the ssh to run as a windows service. Besides that I did nothing else. Can anyone help me troubleshoot this issue? Thank you very much. EDIT The virtual machine software is VMWare Workstation 7.1.4. I think the problem is in its settings, but I have no idea where exactly. The Network Adapter is set to Bridged. EDIT2 All the machines are located in the company lab, I think all of them are on the same segment, but I may be wrong. Below is the ipconfig /all output for each machine (skipping the linux server). I have deleted the Tunnel adapters to keep the output minimal. If anyone thinks they matter, do tell so and I will post them as well. In addition ping output is given to show that DNS is correct. Something else, may be relevant, may be not. Doing psexec to srv works OK, whereas to vm failes with Access Denied. srv: C:\Windows\system32>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : srv Primary Dns Suffix . . . . . . . : shunra.net Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : shunra.net Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Broadcom BCM5709C NetXtreme II GigE (NDIS VBD Client) Physical Address. . . . . . . . . : E4-1F-13-6D-F3-00 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 172.30.6.9(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.248.0 Default Gateway . . . . . . . . . : 172.30.0.254 DNS Servers . . . . . . . . . . . : 172.30.1.1 172.30.1.2 NetBIOS over Tcpip. . . . . . . . : Enabled C:\Windows\system32>ping vm Pinging vm.shunra.net [172.30.2.60] with 32 bytes of data: Reply from 172.30.2.60: bytes=32 time=1ms TTL=128 Reply from 172.30.2.60: bytes=32 time=4ms TTL=128 Reply from 172.30.2.60: bytes=32 time<1ms TTL=128 Reply from 172.30.2.60: bytes=32 time<1ms TTL=128 Ping statistics for 172.30.2.60: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 4ms, Average = 1ms C:\Windows\system32> vm: C:\>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : vm Primary Dns Suffix . . . . . . . : shunra.net Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : shunra.net shunranet Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : shunranet Description . . . . . . . . . . . : VMware Accelerated AMD PCNet Adapter Physical Address. . . . . . . . . : 00-0C-29-8F-A0-0B Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 172.30.2.60 Subnet Mask . . . . . . . . . . . : 255.255.248.0 Default Gateway . . . . . . . . . : 172.30.0.254 DHCP Server . . . . . . . . . . . : 172.30.1.1 DNS Servers . . . . . . . . . . . : 172.30.1.1 172.30.1.2 Lease Obtained. . . . . . . . . . : Tuesday, October 25, 2011 18:16:34 Lease Expires . . . . . . . . . . : Wednesday, November 02, 2011 18:16:34 C:\>ping srv Pinging srv.shunra.net [172.30.6.9] with 32 bytes of data: Reply from 172.30.6.9: bytes=32 time=1ms TTL=128 Reply from 172.30.6.9: bytes=32 time<1ms TTL=128 Reply from 172.30.6.9: bytes=32 time<1ms TTL=128 Reply from 172.30.6.9: bytes=32 time<1ms TTL=128 Ping statistics for 172.30.6.9: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 1ms, Average = 0ms C:\> vm-host (the host machine of the vm): C:\>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : vm-host Primary Dns Suffix . . . . . . . : shunra.net Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : shunra.net Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek RTL8168D/8111D Family PCI-E Gigabit Ethernet NIC (NDIS 6.20) Physical Address. . . . . . . . . : 6C-F0-49-E7-E9-30 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::f59d:7f6e:1510:6f%10(Preferred) IPv4 Address. . . . . . . . . . . : 172.30.6.7(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.248.0 Default Gateway . . . . . . . . . : 172.30.0.254 DHCPv6 IAID . . . . . . . . . . . : 242020425 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-CC-39-80-6C-F0-49-E7-E9-30 DNS Servers . . . . . . . . . . . : 172.30.1.1 194.90.1.5 NetBIOS over Tcpip. . . . . . . . : Enabled Ethernet adapter VMware Network Adapter VMnet1: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for VMnet1 Physical Address. . . . . . . . . : 00-50-56-C0-00-01 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::cd92:38c0:9a6d:c008%16(Preferred) Autoconfiguration IPv4 Address. . : 169.254.192.8(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : DHCPv6 IAID . . . . . . . . . . . : 352342102 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-CC-39-80-6C-F0-49-E7-E9-30 DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1 fec0:0:0:ffff::2%1 fec0:0:0:ffff::3%1 NetBIOS over Tcpip. . . . . . . . : Enabled Ethernet adapter VMware Network Adapter VMnet8: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for VMnet8 Physical Address. . . . . . . . . : 00-50-56-C0-00-08 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::edb9:b78c:a504:593b%17(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.5.1(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : DHCPv6 IAID . . . . . . . . . . . : 369119318 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-CC-39-80-6C-F0-49-E7-E9-30 DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1 fec0:0:0:ffff::2%1 fec0:0:0:ffff::3%1 NetBIOS over Tcpip. . . . . . . . : Enabled C:\>ping srv Pinging srv.shunra.net [172.30.6.9] with 32 bytes of data: Reply from 172.30.6.9: bytes=32 time<1ms TTL=128 Reply from 172.30.6.9: bytes=32 time<1ms TTL=128 Reply from 172.30.6.9: bytes=32 time<1ms TTL=128 Reply from 172.30.6.9: bytes=32 time<1ms TTL=128 Ping statistics for 172.30.6.9: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms C:\>ping vm Pinging vm.shunra.net [172.30.2.60] with 32 bytes of data: Reply from 172.30.2.60: bytes=32 time<1ms TTL=128 Reply from 172.30.2.60: bytes=32 time<1ms TTL=128 Reply from 172.30.2.60: bytes=32 time<1ms TTL=128 Reply from 172.30.2.60: bytes=32 time<1ms TTL=128 Ping statistics for 172.30.2.60: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms C:\> EDIT3 I have just checked - the vm-host is able to ssh to the vm machine! I still do not know how to leverage this discovery to solve the problem.

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• How to whitelist external access to an internal webserver via Cisco ACLs?

  - by Josh

  This is our company's internet gateway router. This is what I want to accomplish on our Cisco 2691 router: All employees need to be able to have unrestricted access to the internet (I've blocked facebook with an ACL, but other than that, full access) There is an internal webserver that should be accessible from any internal IP address, but only a select few external IP addresses. Basically, I want to whitelist access from outside the network. I don't have a hardware firewall appliance. Until now, the webserver has not needed to be accessible externally... or in any case, the occasional VPN has sufficed when needed. As such, the following config has been sufficient: access-list 106 deny ip 66.220.144.0 0.0.7.255 any access-list 106 deny ip ... (so on for the Facebook blocking) access-list 106 permit ip any any ! interface FastEthernet0/0 ip address x.x.x.x 255.255.255.248 ip access-group 106 in ip nat outside fa0/0 is the interface with the public IP However, when I add... ip nat inside source static tcp 192.168.0.52 80 x.x.x.x 80 extendable ...in order to forward web traffic to the webserver, that just opens it up entirely. That much makes sense to me. This is where I get stumped though. If I add a line to the ACL to explicitly permit (whitelist) an IP range... something like this: access-list 106 permit tcp x.x.x.x 0.0.255.255 192.168.0.52 0.0.0.0 eq 80 ... how do I then block other external access to the webserver while still maintaining unrestricted internet access for internal employees? I tried removing the access-list 106 permit ip any any. That ended up being a very short-lived config :) Would something like access-list 106 permit ip 192.168.0.0 0.0.0.255 any on an "outside-inbound" work?

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• can't Remote desktop to windows XP, blaming the server side

  - by Jin

  After rebooting my work PC (windows XP sp3) this Wednesday (thank to Microsoft Tuesday), I found that I can't remote desktop to my work PC from home (with VPN to company). I have been remote-desktop to work for years and I am really surprised since connectivity is not the problem, so I brought up wireshark to sniff the packets. I can see after TCP handshake, client sent X.224 Connection Request 03 00 00 13 0e e0 00 00 00 00 00 01 00 08 00 03 00 00 00 server sent X.224 Connection Confirm. 03 00 00 0b 06 d0 00 00 12 34 00 According to "MS-RDPBCGR", the official spec on RDP, the server should include Negotiation Response in the "Connection Confirm" message but it didn't. It's empty. I googled a lot but didn't find any clue on why server did that. By the way, I used the same remote desktop client and can connect to other windows XP PC. Here are a couple of pieces of information that may help to give a clue: Since TCP handshake (server port being 3389), I believe the svchost service is actually running. going to control panel -- system window, --- "Remote" tab, the remote desktop is indeeded checked and it states that my username is allowed. according to the packet capture, client didn't even get a chance to tell server what user was trying to logon. Yes, the progress bar showed up a few seconds and then it went back to the "Remote desktop Connection" window again. Searched "windowsupdate.log", didn't find any appearance of the word "remote".

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• New AD-DC in a new Site is refusing cross-site IPv4 connections

  - by sysadmin1138

  We just added a new Server 2008 (sp2) Domain Controller in a new Site, our first such config. It's over a VPN gateway WAN (10Mbit). Unfortunately it is displaying a strange network symptom. Connections to the SMB ports (TCP/139 and TCP/445) are being actively refused... if the connection is coming in on pure IPv4. If the incoming connection is coming by way of the 6to4 tunnel those connections establish and work just fine. It isn't the Firewall, since this behavior can be replicated with the firewall turned off. Also, it's actually issuing RST packets to connection attempts; something that only happens with a Windows Firewall if there is a service behind a port and the service itself denies access. I doubt it's some firewall device on the wire, since the server this one replaced was running Samba and access to it from our main network functioned just fine. I'm thinking it might have something to do with the Subnet lists in AD Sites & Services, but I'm not sure. We haven't put any IPv6 addresses in there, just v4, and it's the v4 connections that are being denied. Unfortunately, I can't figure this out. We need to be able to talk to this DC from the main campus. Is there some kind of site-based SMB-level filtering going on? I can talk to the DC's on campus just fine, but that's over that v6 tunnel. I don't have access to a regular machine on that remote subnet, which limits my ability to test.

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• Headless VirtualBox VM NAT Network

  - by dirt

  I have a remote linux server accessible through SSH only. My goal is to host multiple Virtual Machines on this host server using VirtualBox. The host server has 1 IP address, so NAT will be used to route to the VMs for example 10022 will forward to server1:22 and 20022 will forward to server2:22. I have installed VirtualBox and copied a pre-configured CentOS VM to the host server. I start the VM, but cannot establish a connection to the server for example ssh -p 10022 127.0.0.1 times out. I've tried many things: Method 1: Copied existing .vdi, attached to new VM Method 2: Imported .Ova VM (thought it would help any MAC re-init issues?) NAT network type, tried natnet1 192.168/16 and 10.0/16 VBoxManage modifyvm "hermes.awoms.com" --natnet1 "192.168/16" Port forwarding with and without specifying VM ip in modifyvm --natpf1 command VBoxManage modifyvm "hermes" --natpf1 "guestssh,tcp,,10022,,,22" VBoxManage modifyvm "hermes" --natpf1 "guestssh,tcp,,10022,192.168.0.15,22" I can't see if VM is even booting (VBoxHeadless "hermes" --start & runs with no errors) I can't tell if VM is getting an IP address Is there anything else I can do to get more information from VirtualBox or the VM starting up when the only access I have is SSH?

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• Remote desktop connection to network printer

  - by andand

  I'm trying to print a document from a remote WinXP machine to a network printer I use on a local Win7 machine using Remote Desktop. The network printer does not appear in the list of those available on the WinXP box. In more detail, the local machine runs Windows 7 (no admin rights) and connects to a network printer managed by a print server (i.e. not using a local TCP/IP Port). I have access to a Windows XP host on a separate network which I access using Remote Desktop. I would like to have print requests from the remote XP box forwarded to the network printer I use on the Windows 7 machine. The XP machine cannot access the print server I use on the Win7 machine nor can it create a TCP/IP port to connect directly to the printer (network configuration issues). After having consulting the KB312135 I confirmed the "Printers" option was selected in the Remote Desktop Client, Local Resources Tab, yet the network printer does not appear on the list of available printers on the XP box. Is this a lost cause or is there something else I haven't managed to locate yet?

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• Connecting to MySQL Server from PHP Command Line (MAMP)

  - by Austin White

  First of all, I'm using Mac OSX 1.6, MAMP 1.9, PHP 5.3.4, and MySQL 5.1.44. I'm in the process of setting up a video encoding service for a site using Chris Boulton's PHP-Resque and Redis. Once the worker process is fired and the videos have been encoded, I need to save their locations to a mysql database. The php script is being run from the shell, so that is where the issue begins. I import the mysql settings and when it attempts to connect, I get the following errors: Warning: mysqli::mysqli(): php_network_getaddresses: getaddrinfo failed: nodename nor servname provided, or not known in /Users/austingym/Documents/Dropbox/Website/htdocs/homefree/lib/MySQLi_Extended.class.php on line 24 Warning: mysqli::mysqli(): [2002] php_network_getaddresses: getaddrinfo failed: nodename nor servn (trying to connect via tcp://MYSQL_SERVER:3306) in /Users/austingym/Documents/Dropbox/Website/htdocs/homefree/lib/MySQLi_Extended.class.php on line 24 Warning: mysqli::mysqli(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: nodename nor servname provided, or not known in /Users/austingym/Documents/Dropbox/Website/htdocs/homefree/lib/MySQLi_Extended.class.php on line 24 Warning: mysqli::set_charset(): Couldn't fetch MySQLi_Extended in /Users/austingym/Documents/Dropbox/Website/htdocs/homefree/lib/MySQLi_Extended.class.php on line 32 I realize that the error is occurring because it's trying to connect to tcp://MYSQL_SERVER:3306, when MySQL is on port 8889. I've been reading about Mac OSX and MAMP errors regarding the mysql.sock and I've gone through multiple forums and tried various fixes, but none have worked. I've tried PATH=/Applications/MAMP/Library/bin/:/Applications/MAMP/bin/php5.3/bin/:/opt/local/bin:/opt/local/sbin:$PATH and sudo ln -s /Applications/MAMP/tmp/mysql/mysql.sock /tmp/mysql.sock but neither have worked. I even ran a search on my machine for "3306" to find where it's being set, but because that's the normal default, I'm guessing it's not being set explicitly. Any clues on how to fix this rather challenging error?

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• Can OpenVPN invoke DHCP Client?

  - by Ency

  I have got working VPN connection through openvpn, but I would like to use also my DHCP server and not openvpn's push feature. Currently everything works fine, but I have to manually start dhcp client, eg. dhclient tap0 and I get IP and other important stuff from my DHCP, is there any directive which start DHCP Client when connection is established? There is my client's config: remote there.is.server.com float dev tap tls-client #pull port 1194 proto tcp-client persist-tun dev tap0 #ifconfig 192.168.69.201 255.255.255.0 #route-up "dhclient tap0" #dhcp-renew ifconfig 0.0.0.0 255.255.255.0 ifconfig-noexec ifconfig-nowarn ca /etc/openvpn/ca.crt cert /etc/openvpn/encyNtb_openvpn_client.crt key /etc/openvpn/encyNtb_openvpn_client.key dh /etc/openvpn/dh-openvpn.dh ping 10 ping-restart 120 comp-lzo verb 5 log-append /var/log/openvpn.log Here comes server's config: mode server tls-server dev tap0 local servers.ip.here port 1194 proto tcp-server server-bridge # Allow comunication between clients client-to-client # Allowing duplicate users per one certificate duplicate-cn # CA Certificate, VPN Server Certificate, key, DH and Revocation list ca /etc/ssl/CA/certs/ca.crt cert /etc/ssl/CA/certs/openvpn_server.crt key /etc/ssl/CA/private/openvpn_server.key dh /etc/ssl/CA/dh/dh-openvpn.dh crl-verify /etc/ssl/CA/crl.pem # When no response is recieved within 120seconds, client is disconected keepalive 10 60 persist-tun persist-key user openvpn group openvpn # Log and Connected clients file log-append /var/log/openvpn verb 3 status /var/run/openvpn/vpn.status 10 # Compression comp-lzo #Push data to client push "route-gateway 192.168.69.1" push "redirect-gateway def1"

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• Default Gateway solution on NAT'd network (best options)

  - by kwiksand

  I've recently changed a network from a bunch of machines exposed to the net on a network to a more security conscious Firewall-fronted network with a DMZ for public services. Everything's mostly working perfectly now, but I've got the old problem of NAT Loopback where a machine within the LAN wants to access a public service via the public/external IP. I've solved this problem previously in a small/SOHO environment simply using NAT loopback features of the router in use or a simple iptables rule to do the same, but I want to make sure I make the most resilient choice with the least concern. It seems I can: Use iptables as I've said to DNAT and MASQUERADE the change source/destination so the connection works correctly i.e iptables -A PREROUTING -t nat -d ip.of.eth0.here -p tcp --dport 8080 -j DNAT --to 192.168.0.201:8080 iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -p tcp --dport 8080 -d 192.168.0.201 -j MASQUERADE Use split DNS, with internal mappings for public IP's Potentially do some route nastyness by setting the Default Gateway to use a different externally exposed IP to then come back in the public route (messy) Someone mentioned putting the Default Gateway within the DMZ as well (on serverfault), but I can't find the post again. I'm sure this is a common issue for many with NAT'd networks, but I've not really seen the perfect solve all when it comes to fixing this problem. What is your opinion?

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