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  • Capturing multicast data with Wireshark with IGMP Snooping Enabled at the switch

    - by Chuu
    I am trying to capture multicast traffic via Wireshark (actually TShark), however the switch has IGMP snooping enabled and will only send Multicast traffic on the ports that have an active IGMP subscription. I am currently getting around this by having a separate application hold the groups open I wish to record, but I am trying to set up a system to start/stop recording data dynamically and this extra complexity is painful. Is there a way to force Wireshark to send out IGMP Subscriptions for multicast groups it is recording?

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  • Nginx redirect requests to sub-domains that do not exist to custom 404 page when wild card A record is set?

    - by Anagio
    Is there a way to capture all requests to arbitrary sub-domains which do not have a virtual host setup, and redirect to a custom 404 page in nginx? I will have a wild card A record setup *.example.com and all our users will have a sub-domain username.example.com. If someone enters a sub-domain which does not exist how can I redirect to a custom 404 page rather than have it resolve since wild card is setup?

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  • What are the issues when installing PEAR on Windows XP?

    - by paulhomebus
    I have a problem using the CLI with PEAR in a WAMP environment, I have tried different ways of getting pear to run in CLI but it doesn't want to go, I even have tried making a pear.bat file that points to the pear.bat file, using "%1 %2 %3" to capture extra info... I want to know what does the file called PEAR_ENV.reg do? It is mentioned in many places (forums, blogs etc) to set your environment variables so that you can use pear from CLI.

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  • Does a router have a receiving range?

    - by Aadit M Shah
    So my dad bought a TP-Link router (Model No. TL-WA7510N) which apparently has a transmitting range of 1km; and he believes that it also has a receiving range of 1km. So he's arguing with me that the router (which is a trans-receiver) can communicate with any device in the range of 1km whether or not that device has a transmitting range of 1km. To put it graphically: +----+ 1km +----+ | |------------------------------------------------->| | | TR | | TR | | | <----| | +----+ 100m+----+ So here's the problem: The two devices are 1km apart. The first device has a transmitting range of 1km. The second device only has a transmitting range of 100m. According to my dad the two devices can talk to each other. He says that the first device has a transmitting and a receiving range of 1km which means that it can both send data to devices 1km away and receive data from devices 1km away. To me this makes no sense. If the second device can only send data to devices 100m away then how can the first device catch the transmission? He further argues that for bidirectional communication both the sender and the reciver should have overlapping areas of transmission: According to him if two devices have an overlapping area of transmission then they can communicate. Here neither device has enough transmission power to reach the other. However they have enough receiving power to capture the transmission. Obviously this makes absolutely no sense to me. How can a device sense a transmission which hasn't even reached it yet and go out, capture it and bring it back it. To me a trans-receiver only has a transmission power. It has zero receiving power. Hence for two devices to be able to communicate bidirectionally, the diagram should look like: Hence, from my point of view, both the devices should have a transmission range far enough to reach the other for bidirectional communication to be possible; but no matter how much I try to explain to my dad he adamantly disagrees. So, to put an end to this debate once and for all, who is correct? Is there even such a thing as a receiving range? Can a device fetch a transmission that would otherwise never reach it? I would like a canonical answer on this.

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  • Displaying dual monitor screenshot in "dual fullscreen" mode

    - by ohadsc
    Suppose I take a PNG screenshot on a dual monitor system (let's assume for simplicity they are identical), The screenshot will capture both monitors. Now say I want to display that screenshot in an image viewer (windows photo viewer, xnview, etc) at fullscreen - I will then have to choose which monitor to display it on, distorting the image. Is there a way to strech it accross both monitors (aside of changing the windows display mode in the screen configuration window) ? I am using Windows 7 Thanks

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  • Troubleshooting latency spikes on ESXi NFS datastores

    - by exo_cw
    I'm experiencing fsync latencies of around five seconds on NFS datastores in ESXi, triggered by certain VMs. I suspect this might be caused by VMs using NCQ/TCQ, as this does not happen with virtual IDE drives. This can be reproduced using fsync-tester (by Ted Ts'o) and ioping. For example using a Grml live system with a 8GB disk: Linux 2.6.33-grml64: root@dynip211 /mnt/sda # ./fsync-tester fsync time: 5.0391 fsync time: 5.0438 fsync time: 5.0300 fsync time: 0.0231 fsync time: 0.0243 fsync time: 5.0382 fsync time: 5.0400 [... goes on like this ...] That is 5 seconds, not milliseconds. This is even creating IO-latencies on a different VM running on the same host and datastore: root@grml /mnt/sda/ioping-0.5 # ./ioping -i 0.3 -p 20 . 4096 bytes from . (reiserfs /dev/sda): request=1 time=7.2 ms 4096 bytes from . (reiserfs /dev/sda): request=2 time=0.9 ms 4096 bytes from . (reiserfs /dev/sda): request=3 time=0.9 ms 4096 bytes from . (reiserfs /dev/sda): request=4 time=0.9 ms 4096 bytes from . (reiserfs /dev/sda): request=5 time=4809.0 ms 4096 bytes from . (reiserfs /dev/sda): request=6 time=1.0 ms 4096 bytes from . (reiserfs /dev/sda): request=7 time=1.2 ms 4096 bytes from . (reiserfs /dev/sda): request=8 time=1.1 ms 4096 bytes from . (reiserfs /dev/sda): request=9 time=1.3 ms 4096 bytes from . (reiserfs /dev/sda): request=10 time=1.2 ms 4096 bytes from . (reiserfs /dev/sda): request=11 time=1.0 ms 4096 bytes from . (reiserfs /dev/sda): request=12 time=4950.0 ms When I move the first VM to local storage it looks perfectly normal: root@dynip211 /mnt/sda # ./fsync-tester fsync time: 0.0191 fsync time: 0.0201 fsync time: 0.0203 fsync time: 0.0206 fsync time: 0.0192 fsync time: 0.0231 fsync time: 0.0201 [... tried that for one hour: no spike ...] Things I've tried that made no difference: Tested several ESXi Builds: 381591, 348481, 260247 Tested on different hardware, different Intel and AMD boxes Tested with different NFS servers, all show the same behavior: OpenIndiana b147 (ZFS sync always or disabled: no difference) OpenIndiana b148 (ZFS sync always or disabled: no difference) Linux 2.6.32 (sync or async: no difference) It makes no difference if the NFS server is on the same machine (as a virtual storage appliance) or on a different host Guest OS tested, showing problems: Windows 7 64 Bit (using CrystalDiskMark, latency spikes happen mostly during preparing phase) Linux 2.6.32 (fsync-tester + ioping) Linux 2.6.38 (fsync-tester + ioping) I could not reproduce this problem on Linux 2.6.18 VMs. Another workaround is to use virtual IDE disks (vs SCSI/SAS), but that is limiting performance and the number of drives per VM. Update 2011-06-30: The latency spikes seem to happen more often if the application writes in multiple small blocks before fsync. For example fsync-tester does this (strace output): pwrite(3, "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"..., 1048576, 0) = 1048576 fsync(3) = 0 ioping does this while preparing the file: [lots of pwrites] pwrite(3, "********************************"..., 4096, 1036288) = 4096 pwrite(3, "********************************"..., 4096, 1040384) = 4096 pwrite(3, "********************************"..., 4096, 1044480) = 4096 fsync(3) = 0 The setup phase of ioping almost always hangs, while fsync-tester sometimes works fine. Is someone capable of updating fsync-tester to write multiple small blocks? My C skills suck ;) Update 2011-07-02: This problem does not occur with iSCSI. I tried this with the OpenIndiana COMSTAR iSCSI server. But iSCSI does not give you easy access to the VMDK files so you can move them between hosts with snapshots and rsync. Update 2011-07-06: This is part of a wireshark capture, captured by a third VM on the same vSwitch. This all happens on the same host, no physical network involved. I've started ioping around time 20. There were no packets sent until the five second delay was over: No. Time Source Destination Protocol Info 1082 16.164096 192.168.250.10 192.168.250.20 NFS V3 WRITE Call (Reply In 1085), FH:0x3eb56466 Offset:0 Len:84 FILE_SYNC 1083 16.164112 192.168.250.10 192.168.250.20 NFS V3 WRITE Call (Reply In 1086), FH:0x3eb56f66 Offset:0 Len:84 FILE_SYNC 1084 16.166060 192.168.250.20 192.168.250.10 TCP nfs > iclcnet-locate [ACK] Seq=445 Ack=1057 Win=32806 Len=0 TSV=432016 TSER=769110 1085 16.167678 192.168.250.20 192.168.250.10 NFS V3 WRITE Reply (Call In 1082) Len:84 FILE_SYNC 1086 16.168280 192.168.250.20 192.168.250.10 NFS V3 WRITE Reply (Call In 1083) Len:84 FILE_SYNC 1087 16.168417 192.168.250.10 192.168.250.20 TCP iclcnet-locate > nfs [ACK] Seq=1057 Ack=773 Win=4163 Len=0 TSV=769110 TSER=432016 1088 23.163028 192.168.250.10 192.168.250.20 NFS V3 GETATTR Call (Reply In 1089), FH:0x0bb04963 1089 23.164541 192.168.250.20 192.168.250.10 NFS V3 GETATTR Reply (Call In 1088) Directory mode:0777 uid:0 gid:0 1090 23.274252 192.168.250.10 192.168.250.20 TCP iclcnet-locate > nfs [ACK] Seq=1185 Ack=889 Win=4163 Len=0 TSV=769821 TSER=432716 1091 24.924188 192.168.250.10 192.168.250.20 RPC Continuation 1092 24.924210 192.168.250.10 192.168.250.20 RPC Continuation 1093 24.924216 192.168.250.10 192.168.250.20 RPC Continuation 1094 24.924225 192.168.250.10 192.168.250.20 RPC Continuation 1095 24.924555 192.168.250.20 192.168.250.10 TCP nfs > iclcnet_svinfo [ACK] Seq=6893 Ack=1118613 Win=32625 Len=0 TSV=432892 TSER=769986 1096 24.924626 192.168.250.10 192.168.250.20 RPC Continuation 1097 24.924635 192.168.250.10 192.168.250.20 RPC Continuation 1098 24.924643 192.168.250.10 192.168.250.20 RPC Continuation 1099 24.924649 192.168.250.10 192.168.250.20 RPC Continuation 1100 24.924653 192.168.250.10 192.168.250.20 RPC Continuation 2nd Update 2011-07-06: There seems to be some influence from TCP window sizes. I was not able to reproduce this problem using FreeNAS (based on FreeBSD) as a NFS server. The wireshark captures showed TCP window updates to 29127 bytes in regular intervals. I did not see them with OpenIndiana, which uses larger window sizes by default. I can no longer reproduce this problem if I set the following options in OpenIndiana and restart the NFS server: ndd -set /dev/tcp tcp_recv_hiwat 8192 # default is 128000 ndd -set /dev/tcp tcp_max_buf 1048575 # default is 1048576 But this kills performance: Writing from /dev/zero to a file with dd_rescue goes from 170MB/s to 80MB/s. Update 2011-07-07: I've uploaded this tcpdump capture (can be analyzed with wireshark). In this case 192.168.250.2 is the NFS server (OpenIndiana b148) and 192.168.250.10 is the ESXi host. Things I've tested during this capture: Started "ioping -w 5 -i 0.2 ." at time 30, 5 second hang in setup, completed at time 40. Started "ioping -w 5 -i 0.2 ." at time 60, 5 second hang in setup, completed at time 70. Started "fsync-tester" at time 90, with the following output, stopped at time 120: fsync time: 0.0248 fsync time: 5.0197 fsync time: 5.0287 fsync time: 5.0242 fsync time: 5.0225 fsync time: 0.0209 2nd Update 2011-07-07: Tested another NFS server VM, this time NexentaStor 3.0.5 community edition: Shows the same problems. Update 2011-07-31: I can also reproduce this problem on the new ESXi build 4.1.0.433742.

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  • Why can't I get Apache2 mod_dumpio working under Lucid Lynx Ubuntu?

    - by bland328
    I'm trying to capture all of the traffic to and from an Apache2 web server for troubleshooting purposes, so I did the following to try to set mod_dumpio up properly: Used a2enmod to enable mod_dumpio Changed LogLevel to "debug" in apache2.config Added "DumpIOInput On", "DumpIOOutput On" and "DumpIOLogLevel debug" to apache2.config Issued "/etc/init.d/apache2 restart" to restart Apache Issued "apache2ctl -t -D DUMP_MODULES" to make sure mod_dumpio was loaded I'm watching /var/log/apache2/error.log, but not seeing much there, and certainly not a dump of all input and output. Can anyone help?

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  • What is a good program for mixed mode circuit simulation?

    - by Jeff Shattock
    I'm looking for a program that will perform schematic capture and mixed-mode (analog and digital) circuit simulation. If it also did PCB layout and routing, that would be a bonus, but not necessary. I currently use an old version of CircuitMaker/TraxMaker, but its dated, and the simulation engine is a bit lacking. Windows or Linux, doesn't really matter. What is a good program for this purpose?

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  • Checking the configuration of two systems to determine changes

    - by None
    We are standing up a replicant data center at work and need to ensure that the new data center is configured (nearly) identically to the original. The new data center will be differently addressed and named than the original and will have differing user accounts, but all the COTS, patches, and configurations should be the same. We would normally ghost the original servers and install those images onto the new machines, however, we have a few problematic pieces of COTS that require we install them outside of an image due to how they capture the setup of the network during their installation and maintain it within their configuration information (in some cases storing it in various databases). We have tried multiple times and this piece of COTS cannot be captured within a ghost image unless the destination machine will have an identical network setup (all the same IPs, hostnames, user accounts, etc across the entire network) as the original. In truth, it is the setup of these special COTS that I want to audit the most because they are difficult to install and configure in the first place. In light of the fact that we can’t simply ghost, I’m trying to find a reasonable manner to audit the new data center and check to see if it is setup like the original (some sort of system wide configuration audit or integrity check). I’m considering using something like Tripwire for Servers to capture the configuration on the source machines and then run an audit on the destination machines. I understand that it will still show some differences due to the minor config changes, but I’m hoping that it will eliminate the majority of the work. Here are some of the constraints I’m working under: Data center is comprised of multiple Windows and Linux machines of differing versions (about 20 total) I absolutely cannot ghost or snap any other type of image of these machines … at least not in their final configuration I want to audit the final configuration to ensure all of the COTS, patches, configurations, etc are installed and setup properly (as compared to the original data center) I would rather not install any additional tools on these machines … I’d much rather run it from a standalone machine or off a DVD Price of tools is important but not an impossible burden, however, getting a solution soon is important (I can’t take the time to roll my own tools to do this) For the COTS that stores the network information, I don’t know all of the places it stores the network information … so it would be unlikely I could find a way in the near future to adjust its setup after the installation has occurred Anyone have any thoughts or alternate approaches? Can anyone recommend tools that would be usable for system wide configuration audits?

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  • quicktime recording: only a region?

    - by David.Chu.ca
    The newest QT has a feature to record or capture the current screen. My iMac 27 is too big if I want to record the whole screen. Can I designate a region or an application window for recording? I could not find a way to do that. Not sure if I have to use alternative applications to do it.

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  • virtual mac osx 10.6.8 in VMWare does not save screen captures

    - by epeleg
    I have a VMWare image of a mac OSX 10.6.8 (fully updated). When I click Commnd+Shift+3 it makes a camera shutter sound, but no screen-capture is saved anywhere that I can find. When running: defaults read com.apple.screencapture location it returns /Users/admin/Pictures/Captures this folder exists and is empty also executed chmod 777 /Users/admin/Pictures/Captures Any ideas anyone ? Could this be related to the VMware screen resolution(Size) of this MAC? (currently set to 1348x1391)

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  • Capturing XEN Dom0 logs on Debian lenny ?

    - by Xavier
    I have a Dell server with Xen 3.2 (from Debian Lenny) running a Debian Lenny dom0. Since I am facing unexpected reboot without any clue in the debian logs, I would like to capture the Xen dom0 logs. Did anybody achieve this and how ? I tried to use the Dell serial port redirection without success.

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  • android camera preview blank screen

    - by user1104836
    I want to capture a photo manually not by using existing camera apps. So i made this Activity: public class CameraActivity extends Activity { private Camera mCamera; private Preview mPreview; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_camera); // Create an instance of Camera // mCamera = Camera.open(0); // Create our Preview view and set it as the content of our activity. mPreview = new Preview(this); mPreview.safeCameraOpen(0); FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview); preview.addView(mPreview); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_camera, menu); return true; } } This is the CameraPreview which i want to use: public class Preview extends ViewGroup implements SurfaceHolder.Callback { SurfaceView mSurfaceView; SurfaceHolder mHolder; //CAM INSTANCE ================================ private Camera mCamera; List<Size> mSupportedPreviewSizes; //============================================= /** * @param context */ public Preview(Context context) { super(context); mSurfaceView = new SurfaceView(context); addView(mSurfaceView); // Install a SurfaceHolder.Callback so we get notified when the // underlying surface is created and destroyed. mHolder = mSurfaceView.getHolder(); mHolder.addCallback(this); mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } /** * @param context * @param attrs */ public Preview(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub } /** * @param context * @param attrs * @param defStyle */ public Preview(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // TODO Auto-generated constructor stub } /* (non-Javadoc) * @see android.view.ViewGroup#onLayout(boolean, int, int, int, int) */ @Override protected void onLayout(boolean arg0, int arg1, int arg2, int arg3, int arg4) { // TODO Auto-generated method stub } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // Now that the size is known, set up the camera parameters and begin // the preview. Camera.Parameters parameters = mCamera.getParameters(); parameters.setPreviewSize(width, height); requestLayout(); mCamera.setParameters(parameters); /* Important: Call startPreview() to start updating the preview surface. Preview must be started before you can take a picture. */ mCamera.startPreview(); } @Override public void surfaceCreated(SurfaceHolder holder) { // TODO Auto-generated method stub } @Override public void surfaceDestroyed(SurfaceHolder holder) { // Surface will be destroyed when we return, so stop the preview. if (mCamera != null) { /* Call stopPreview() to stop updating the preview surface. */ mCamera.stopPreview(); } } /** * When this function returns, mCamera will be null. */ private void stopPreviewAndFreeCamera() { if (mCamera != null) { /* Call stopPreview() to stop updating the preview surface. */ mCamera.stopPreview(); /* Important: Call release() to release the camera for use by other applications. Applications should release the camera immediately in onPause() (and re-open() it in onResume()). */ mCamera.release(); mCamera = null; } } public void setCamera(Camera camera) { if (mCamera == camera) { return; } stopPreviewAndFreeCamera(); mCamera = camera; if (mCamera != null) { List<Size> localSizes = mCamera.getParameters().getSupportedPreviewSizes(); mSupportedPreviewSizes = localSizes; requestLayout(); try { mCamera.setPreviewDisplay(mHolder); } catch (IOException e) { e.printStackTrace(); } /* Important: Call startPreview() to start updating the preview surface. Preview must be started before you can take a picture. */ mCamera.startPreview(); } } public boolean safeCameraOpen(int id) { boolean qOpened = false; try { releaseCameraAndPreview(); mCamera = Camera.open(id); mCamera.startPreview(); qOpened = (mCamera != null); } catch (Exception e) { // Log.e(R.string.app_name, "failed to open Camera"); e.printStackTrace(); } return qOpened; } Camera.PictureCallback mPicCallback = new Camera.PictureCallback() { @Override public void onPictureTaken(byte[] data, Camera camera) { // TODO Auto-generated method stub Log.d("lala", "pic is taken"); } }; public void takePic() { mCamera.startPreview(); // mCamera.takePicture(null, mPicCallback, mPicCallback); } private void releaseCameraAndPreview() { this.setCamera(null); if (mCamera != null) { mCamera.release(); mCamera = null; } } } This is the Layout of CameraActivity: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".CameraActivity" > <FrameLayout android:id="@+id/camera_preview" android:layout_width="0dip" android:layout_height="fill_parent" android:layout_weight="1" /> <Button android:id="@+id/button_capture" android:text="Capture" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" /> </LinearLayout> But when i start the CameraActivity, i just see a blank white background and the Capture-Button??? Why i dont see the Camera-Screen?

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  • Stream audio source from Mac OS X as MP3

    - by Adam Backstrom
    I'd like to broadcast audio from my Mac desktop to my Palm Pre, as the Pre is more portable and I can use it in the kitchen, or while I'm exercising, and so on. I can already capture the audio using Soundflower, but how might I create an MP3 stream out of the audio input device? For all intents and purposes, Soundflower can reduce this question down to, "How can I create an MP3 stream from the built-in microphone on my Mac?" as the answer can be applied equally well to iTunes output.

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  • My Laptop Screen keeps flickering...

    - by Chris
    I have a lenovo g530 and the screen keeps flickering on occasion. Sometimes it is worse than others, and sometimes it doesn't seem to do it at all. I was able to capture a video of it so you could see what is happening. I kinda wanted someone else's opinion before I open it up and check the monitor cable on the board. Video Link (in case you missed it above)

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  • How well does Windows 7 MCE support Clear QAM?

    - by Jess Sightler
    How well does Windows 7 MCE support ClearQAM (no-cablecard, no HD), and are there any guidelines for which capture cards work best with it? Also, I have an old laptop with a 2 Ghz Pentium M with 1 GB of RAM. I believe that this will be able to handle 1 stream (as it currently does with non-QAM content under XP MCE. Would it also be able to handle 2 streams?

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  • cannot access a site from Mac OSX Lion but can from other machines on network?

    - by house9
    SOLVED: The issue is with the hamachi client, hamachi is hi-jacking all of the 5.0.0.0/8 address block http://en.wikipedia.org/wiki/Hamachi_(software)#Criticism http://b.logme.in/2012/11/07/changes-to-hamachi-on-november-19th/ The fix on Mac LogMeIn Hamachi Preferences Settings Advanced Peer Connections IP protocol mode IPv6 only (default is both) If you can only connect to some of your network over IPv4 this 'fix' will NOT work for you ----- A few weeks ago I started using a service - https://semaphoreapp.com I think they made DNS changes a week ago and ever since I cannot access the site from my Mac OSX Lion (10.7.4) machine (my main development machine) but I can access the site from other machines on my network ipad windows machine MacMini (10.6.8) After some google searching I tried both of these dscacheutil -flushcache sudo killall -HUP mDNSResponder but no go, I've contacted semaphoreapp as well, but nothing so far - also of interest, one of my colleagues has the exact same problem, cannot access via Mac OSX Lion but can via windows machine, we work remotely and are not on the same ISP some additional info Lion (10.7.4) cannot access site host semaphoreapp.com semaphoreapp.com has address 5.9.53.16 ping semaphoreapp.com PING semaphoreapp.com (5.9.53.16): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 ping: sendto: No route to host Request timeout for icmp_seq 4 ping: sendto: Host is down Request timeout for icmp_seq 5 ping: sendto: Host is down Request timeout for icmp_seq 6 ping: sendto: Host is down Request timeout for icmp_seq 7 .... traceroute semaphoreapp.com traceroute to semaphoreapp.com (5.9.53.16), 64 hops max, 52 byte packets 1 * * * 2 * * * traceroute: sendto: No route to host 3 traceroute: wrote semaphoreapp.com 52 chars, ret=-1 *traceroute: sendto: Host is down traceroute: wrote semaphoreapp.com 52 chars, ret=-1 .... and MacMini (10.6.8) can access it host semaphoreapp.com semaphoreapp.com has address 5.9.53.16 ping semaphoreapp.com PING semaphoreapp.com (5.9.53.16): 56 data bytes 64 bytes from 5.9.53.16: icmp_seq=0 ttl=44 time=191.458 ms 64 bytes from 5.9.53.16: icmp_seq=1 ttl=44 time=202.923 ms 64 bytes from 5.9.53.16: icmp_seq=2 ttl=44 time=180.746 ms 64 bytes from 5.9.53.16: icmp_seq=3 ttl=44 time=200.616 ms 64 bytes from 5.9.53.16: icmp_seq=4 ttl=44 time=178.818 ms .... traceroute semaphoreapp.com traceroute to semaphoreapp.com (5.9.53.16), 64 hops max, 52 byte packets 1 192.168.0.1 (192.168.0.1) 1.677 ms 1.446 ms 1.445 ms 2 * LOCAL ISP 11.957 ms * 3 etc... 10.704 ms 14.183 ms 9.341 ms 4 etc... 32.641 ms 12.147 ms 10.850 ms 5 etc.... 44.205 ms 54.563 ms 36.243 ms 6 vlan139.car1.seattle1.level3.net (4.53.145.165) 50.136 ms 45.873 ms 30.396 ms 7 ae-32-52.ebr2.seattle1.level3.net (4.69.147.182) 31.926 ms 40.507 ms 49.993 ms 8 ae-2-2.ebr2.denver1.level3.net (4.69.132.54) 78.129 ms 59.674 ms 49.905 ms 9 ae-3-3.ebr1.chicago2.level3.net (4.69.132.62) 99.019 ms 82.008 ms 76.074 ms 10 ae-1-100.ebr2.chicago2.level3.net (4.69.132.114) 96.185 ms 75.658 ms 75.662 ms 11 ae-6-6.ebr2.washington12.level3.net (4.69.148.145) 104.322 ms 105.563 ms 118.480 ms 12 ae-5-5.ebr2.washington1.level3.net (4.69.143.221) 93.646 ms 99.423 ms 96.067 ms 13 ae-41-41.ebr2.paris1.level3.net (4.69.137.49) 177.744 ms ae-44-44.ebr2.paris1.level3.net (4.69.137.61) 199.363 ms 198.405 ms 14 ae-47-47.ebr1.frankfurt1.level3.net (4.69.143.141) 176.876 ms ae-45-45.ebr1.frankfurt1.level3.net (4.69.143.133) 170.994 ms ae-46-46.ebr1.frankfurt1.level3.net (4.69.143.137) 177.308 ms 15 ae-61-61.csw1.frankfurt1.level3.net (4.69.140.2) 176.769 ms ae-91-91.csw4.frankfurt1.level3.net (4.69.140.14) 178.676 ms 173.644 ms 16 ae-2-70.edge7.frankfurt1.level3.net (4.69.154.75) 180.407 ms ae-3-80.edge7.frankfurt1.level3.net (4.69.154.139) 174.861 ms 176.578 ms 17 as33891-net.edge7.frankfurt1.level3.net (195.16.162.94) 175.448 ms 185.658 ms 177.081 ms 18 hos-bb1.juniper4.rz16.hetzner.de (213.239.240.202) 188.700 ms 190.332 ms 188.196 ms 19 hos-tr4.ex3k14.rz16.hetzner.de (213.239.233.98) 199.632 ms hos-tr3.ex3k14.rz16.hetzner.de (213.239.233.66) 185.938 ms hos-tr2.ex3k14.rz16.hetzner.de (213.239.230.34) 182.378 ms 20 * * * 21 * * * 22 * * * any ideas? EDIT: adding tcpdump MacMini (which can connect) while running - ping semaphoreapp.com sudo tcpdump -v -i en0 dst semaphoreapp.com Password: tcpdump: listening on en0, link-type EN10MB (Ethernet), capture size 65535 bytes 17:33:03.337165 IP (tos 0x0, ttl 64, id 20153, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->3129)!) 192.168.0.6 > static.16.53.9.5.clients.your-server.de: ICMP echo request, id 61918, seq 0, length 64 17:33:04.337279 IP (tos 0x0, ttl 64, id 26049, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->1a21)!) 192.168.0.6 > static.16.53.9.5.clients.your-server.de: ICMP echo request, id 61918, seq 1, length 64 17:33:05.337425 IP (tos 0x0, ttl 64, id 47854, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->c4f3)!) 192.168.0.6 > static.16.53.9.5.clients.your-server.de: ICMP echo request, id 61918, seq 2, length 64 17:33:06.337548 IP (tos 0x0, ttl 64, id 24772, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->1f1e)!) 192.168.0.6 > static.16.53.9.5.clients.your-server.de: ICMP echo request, id 61918, seq 3, length 64 17:33:07.337670 IP (tos 0x0, ttl 64, id 8171, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->5ff7)!) 192.168.0.6 > static.16.53.9.5.clients.your-server.de: ICMP echo request, id 61918, seq 4, length 64 17:33:08.337816 IP (tos 0x0, ttl 64, id 35810, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->f3ff)!) 192.168.0.6 > static.16.53.9.5.clients.your-server.de: ICMP echo request, id 61918, seq 5, length 64 17:33:09.337948 IP (tos 0x0, ttl 64, id 31120, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->652)!) 192.168.0.6 > static.16.53.9.5.clients.your-server.de: ICMP echo request, id 61918, seq 6, length 64 ^C 7 packets captured 1047 packets received by filter 0 packets dropped by kernel OSX Lion (cannot connect) while running - ping semaphoreapp.com # wireless ~ $ sudo tcpdump -v -i en1 dst semaphoreapp.com Password: tcpdump: listening on en1, link-type EN10MB (Ethernet), capture size 65535 bytes ^C 0 packets captured 262 packets received by filter 0 packets dropped by kernel and # wired ~ $ sudo tcpdump -v -i en0 dst semaphoreapp.com tcpdump: listening on en0, link-type EN10MB (Ethernet), capture size 65535 bytes ^C 0 packets captured 219 packets received by filter 0 packets dropped by kernel above output after Request timeout for icmp_seq 25 or 30 times from ping. I don't know much about tcpdump, but to me it doesn't seem like the ping requests are leaving my machine?

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  • How to get stack dump from crashing ASP.NET process?

    - by Dylan
    An unhandled exception ('System.Net.Sockets.SocketException') occurred in w3wp.exe [9740]. Just-In-Time debugging this exception failed with the following error: Debugger could not be started because no user is logged on. We're getting the above error in the Application log. Is there a way to capture a .NET stack trace that doesn't require user interactivity?

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  • error in qemu monitor wavcapture with virsh

    - by Aniket Awati
    I have VM running on qemu-kvm. I am managing it with libvirt and command line tool virsh. I want to record the audio output of the VM. Here is what I am trying - virsh qemu-monitor-command -hmp VM_NAME wavcapture VM.wav This is the output I am getting : Failed to open wave file `vm.wav' Reason: Permission denied Failed to add wave capture I have tried to create a dummy vm.wav with 777 permissions. But I still get the same error.

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  • How to email output of scheduled tasks?

    - by Starfish
    On Unix systems, the scheduled task service will email any output that a scheduled task produces. If no output is produced, no email is sent. How can I do the same thing on Windows Server 2003 or 2008? Is there a way to call a batch file or executable that will run my task, capture the output, and email it only if there is output? If you propose a PowerShell solution, please note that I only have PowerShell 1.0.

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