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• Wireshark Not Displaying Packets From Other Network Devices, Even in Promisc Mode

  - by eb80

  System Setup: 1. MacBook running Mountain Lion. 2. Wireshark installed and capturing packets (I have "capture all in promiscuous mode" checked) 3. I filter out all packets with my source and destination IP using the following filter ("ip.dst != 192.168.1.104 && ip.src != 192.168.1.104") 4. On the same network as the MacBook, I use an Android device (connecting via WiFi) to make HTTP requests. Expected Results: 1. Wireshark running on the MacBook sees the HTTP request from the Android device. Actual Results: 1. I only see SSDP broadcasts from 192.168.1.1 Question: What do I need to do so that Wireshark, like Firesheep, can see and use the packets (particularly HTTP) from other network devices on the same network?

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• Do I need a Gigabit router with a 24MB/s down and 7MB/s upload speed cable modem?

  - by djangofan

  Do I need a Gigabit port capable wireless router with a 24MB/s down and 7MB/s upload speed cable modem? Does anyone know how to calculate this? FYI, I wont be using the wireless connection from my main computer system. My computer will connect via a hard wire into the router (of the wireless variety), which in turn is connected to the cable modem. My research suggests that the 100 MB/s port can easily handle it. Is that true?

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• Hide Win 8.1 "tip" about "Switch between apps"?

  - by Carl R

  I've just installed Win8.1 and I'm trying to set up IIS. When I open Add remove programs from the start menu I get the pc-settings app. In the pc-settings app I get a "tooltip" or whatever we should call it, that hints me to "Switch between apps" by swiping from the edge. Well fine, but I don't want to do that right now, and I can't get that tip to dissapear. The tip lingers on even into Visual Studio, covering my code. I can't swipe because I don't have a touch screen, and also I'm on a multimonitor system that shows this tip in the middle of the screen. Here's a screenshot for you, where I put the web browser slightly over the left monitor. So, besides rebooting, how am I supposed to kill this very informative tip? EDIT When I kill the app by alt-f4 it dissapears right until I open the settings app again, then it's back. What I'm asking about is how to dismiss items like this in general.

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• LXC Container Networking

  - by digitaladdictions

  I just started to experiment with LXC containers. I was able to create a container and start it up but I cannot get dhcp to assign the container an IP address. If I assign a static address the container can ping the host IP but not outside the host IP. The host is CentOS 6.5 and the guest is Ubuntu 14.04LTS. I used the template downloaded by lxc-create -t download -n cn-01 command. If I am trying to get an IP address on the same subnet as the host I don't believe I should need the IP tables rule for masquerading but I added it anyways. Same with IP forwarding. I compiled LXC by hand from the following source https://linuxcontainers.org/downloads/lxc-1.0.4.tar.gz Host Operating System Version #> cat /etc/redhat-release CentOS release 6.5 (Final) #> uname -a Linux localhost.localdomain 2.6.32-431.20.3.el6.x86_64 #1 SMP Thu Jun 19 21:14:45 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Container Config #> cat /usr/local/var/lib/lxc/cn-01/config # Template used to create this container: /usr/local/share/lxc/templates/lxc-download # Parameters passed to the template: # For additional config options, please look at lxc.container.conf(5) # Distribution configuration lxc.include = /usr/local/share/lxc/config/ubuntu.common.conf lxc.arch = x86_64 # Container specific configuration lxc.rootfs = /usr/local/var/lib/lxc/cn-01/rootfs lxc.utsname = cn-01 # Network configuration lxc.network.type = veth lxc.network.flags = up lxc.network.link = br0 LXC default.confu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:12:30:f2 brd ff:ff:ff:ff:f #> cat /usr/local/etc/lxc/default.conf lxc.network.type = veth lxc.network.link = br0 lxc.network.flags = up #> lxc-checkconfig Kernel configuration not found at /proc/config.gz; searching... Kernel configuration found at /boot/config-2.6.32-431.20.3.el6.x86_64 --- Namespaces --- Namespaces: enabled Utsname namespace: enabled Ipc namespace: enabled Pid namespace: enabled User namespace: enabled Network namespace: enabled Multiple /dev/pts instances: enabled --- Control groups --- Cgroup: enabled Cgroup namespace: enabled Cgroup device: enabled Cgroup sched: enabled Cgroup cpu account: enabled Cgroup memory controller: /usr/local/bin/lxc-checkconfig: line 103: [: too many arguments enabled Cgroup cpuset: enabled --- Misc --- Veth pair device: enabled Macvlan: enabled Vlan: enabled File capabilities: /usr/local/bin/lxc-checkconfig: line 118: [: -gt: unary operator expected Note : Before booting a new kernel, you can check its configuration usage : CONFIG=/path/to/config /usr/local/bin/lxc-checkconfig Network Config (HOST) #> cat /etc/sysconfig/network-scripts/ifcfg-br0 DEVICE=br0 TYPE=Bridge BOOTPROTO=dhcp ONBOOT=yes #> cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 ONBOOT=yes TYPE=Ethernet IPV6INIT=no USERCTL=no BRIDGE=br0 #> cat /etc/networks default 0.0.0.0 loopback 127.0.0.0 link-local 169.254.0.0 #> ip a s 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:12:30:f2 brd ff:ff:ff:ff:ff:ff inet6 fe80::20c:29ff:fe12:30f2/64 scope link valid_lft forever preferred_lft forever 3: pan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether 42:7e:43:b3:61:c5 brd ff:ff:ff:ff:ff:ff 4: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN link/ether 00:0c:29:12:30:f2 brd ff:ff:ff:ff:ff:ff inet 10.60.70.121/24 brd 10.60.70.255 scope global br0 inet6 fe80::20c:29ff:fe12:30f2/64 scope link valid_lft forever preferred_lft forever 12: vethT6BGL2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether fe:a1:69:af:50:17 brd ff:ff:ff:ff:ff:ff inet6 fe80::fca1:69ff:feaf:5017/64 scope link valid_lft forever preferred_lft forever #> brctl show bridge name bridge id STP enabled interfaces br0 8000.000c291230f2 no eth0 vethT6BGL2 pan0 8000.000000000000 no #> cat /proc/sys/net/ipv4/ip_forward 1 # Generated by iptables-save v1.4.7 on Fri Jul 11 15:11:36 2014 *nat :PREROUTING ACCEPT [34:6287] :POSTROUTING ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A POSTROUTING -o eth0 -j MASQUERADE COMMIT # Completed on Fri Jul 11 15:11:36 2014 Network Config (Container) #> cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp #> ip a s 11: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 02:69:fb:42:ee:d7 brd ff:ff:ff:ff:ff:ff inet6 fe80::69:fbff:fe42:eed7/64 scope link valid_lft forever preferred_lft forever 13: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever

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• My laptop suppose to have 6 GB ram but it's only 2 GB installed

  - by monablo

  My laptop is supposed to have 6 GB ram but it only detects 2 GB of it, so I don't know what to do. I searched the web for answer and what i get that there's 2 possible problem: 1- That 4 GB ram card is broken and not working 2- or the 2 ram card have a different path so the windows chose the path of the smaller ram card which would be the 2 GB ram I don't know what is the path in first place so I really don't know what to do. How would I troubleshoot, and work out why the 4 GB stick is not being detected? My laptop's specifications are as follows: Windows 7 Home premium 64- bit Operating system processor : intel (R) core(TM) i7 CPU Q740 @1.73 GHz 1.73GHz installed memory(RAM) : 2.00 GB (but it suppose to be 6 GB -_- ) My laptop is Dell and it's Model N5010

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• Managing PHP processes on Windows 7 (with WAMP)

  - by Andrea

  Is there a way to manage (especially list and kill) long-running PHP processes on a Windows 7 system set up with WAMP? Every once in a while, I'll accidentally throw an infinite loop into a PHP process and want to kill it. Right now, all I can think to do is to restart all my WAMP services but sometimes the PHP processes manage to survive right through the restart, i.e., I still see them outputting to logs even after WAMP's restarted. And if the process isn't logging, then I have no way at all to know when/if it's been killed. Not to mention, this will wipe out everything I'm doing with WAMP, not just a single process. I don't seem to see anything relevant in the Windows Task Manager, but maybe I'm missing something.

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• Installing Oracle11gr2 on redhat linux

  - by KItis

  I have basic question about installing applications on linux operating system. i am going to express my issue considering oracle db installation as a example. when installing oracle database , i created a user group called dba and and user in this group called ora112. so this users is allowed to install database. so my question is if ora112 uses umaks is set to 077, then no other uses will be able to configure oracle database. why do we need to follow this practice. is it a accepted procedure in application installation on Linux. please share your experience with me. thanks in advance for looking into this issue say i install java application on this way. then no other application which belongs to different user account won't be able use java running on this computer because of this access restriction.

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• How to find what is causing Windows 7 Desktop pause

  - by user1009073

  Windows 7 64 bit. Been in use approx 2 years since last rebuild. Recently, system is misbehaving. Specifically, on bootup, I get the login screen. I login, I get my desktop wallpapers (2 monitors). I get one widget (Rainlender2). It now pauses for approx 12 minutes. After that time, it continues fine, without errors/popups. It acts like the delay never happens. How do I identify the cause of the delay?

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• One bigger Virtual Machine distributed across many Nodes [on hold]

  - by flyer

  I just setup virtual machines on one hardware with Vagrant (this is just a test environment, not production!). I want to use a Puppet to configure them and next try to setup OpenStack. I am not sure If I am understanding how this should look at the end. Is it possible to have below architecture with OpenStack after all where I will run one Virtual Machine with Linux? ------------------------------- | VM | ------------------------------- | NOVA | NOVA | NOVA | ------------------------------- | OpenStack | ------------------------------- | Node | Node | Node | ------------------------------- (In my environment Nodes are just virtual machines, but my question concerns separate Hardware nodes) After some comments... Is it a language barrier, or? This is only my 'virtual environment'. If we imagine this virtual machines are a separate Nodes (e.g. every has 4 cores) the OpenStack is still the same, right? Can I run one Virtual Machine across many Nodes with OpenStack? Is it possible to aggregate the computation power of separate machines in one virtual distributed operating system?

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• Is it possible to have Grub2's boot.img in the MBR and have it load core.img from a separate boot pa

  - by wesley

  I have a multiboot system that I would like to use Grub to manage. The version of Grub shipping with my Linux distro is Grub2, and it installs its equivalent of stage 1.5-2, core.img, into the remaining sectors on the first track after the MBR but before the first partition. Unfortunately, those sectors are needed by another program. I have a separate primary /boot partition. If I could only keep boot.img as my MBR but have it look in the /boot partition for core.img rather than the embedded one in the sectors immediately following the MBR, everything would work fine. Is this possible with grub2?

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• slow disk writes between host and guest

  - by Jure1873

  I've got a ubuntu (server kernel) on a amd x4, 4gb ram, 2x seagate sata 1 tb disks for testing virtual machines and the write performance is very slow. The two disks are in a software raid1 array, one small boot ext3 partition, 10gb system partition and the rest is a xfs partition (about 980) gb for data (virtual machines). If I'm copying files from the virtual machine to the host with rsync or scp the copy frequently stalls or goes at about 1mb/s. What's wrong? I've tried disabling barriers on xfs, increased logbufs, allocsize, but it seems nothing helps. The strange thing is that await (for example during copying) for sda is usually under 100, while for sdb is around 400. Any ideas on what could be wrong / what could I do to improve this setup?

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• How to determinate prerequisite of a setup ? DisplayLink on WindowsXP embedded wont start

  - by user35320

  Hi, I want to install DisplayLink on an embedded Windows XP device. The problem is that the setup starts and asked for my approval and after I confirmed it nothing happend. The setup just dissapear. On the official DisplayLink site there they say that they dont support embedded system but there must be a way to get this working on it. So I am searching for a tool to see what the setup is trying to open or what the preerequisite of it are to install it and try to get this working. Thanks for you help

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• Windows 7 freezes on boot screen

  - by this is a dead end

  There was some update that required me to restart my computer, so I did. when it restarted, it stays at the Windows boot screen forever, the screen that says "Starting Windows" and has that Windows logo in the middle. I've tried the start up repair program that shows up when I click F8 when the computer starts. And tried system restore but, it says it has restored windows successfully but it still freezes on the boot screen when I reboot it. When I try starting it in safe mode, it gets to the blue Windows background, the one with the logon screen, then says "Failure configuring Windows updates. Reverting Changes. Do not turn off." Then after a while it reboot by itself. Just noticed, the logo animation on the boot screen is still animated. So it's not completely frozen.

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• Boot Camp: is it possible to restart directly to Windows from Mac OS X?

  - by Jonik

  With the Boot Camp tools installed on Windows, there's an option for rebooting directly to Mac OS ("Restart in Mac OS X" from Boot Camp system tray item). But is this possible in the opposite direction? In other words, instead of the procedure 1) "Restart", 2) wait for OS X to shut down, 3) hold Option key (?), and 4) select the Windows partition, can I tell my Mac to restart so that Windows is selected on the next boot? Something like "Restart in Windows" which would let me bypass steps 2-4. NB: I want to keep Mac OS X as the default OS; I'm just looking for a convenient shortcut when normally running OS X and occasionally wanting to boot to Windows.

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• Boxee on Dell 32in TV causes headaches, how to troubleshoot?

  - by brown145

  I have revamped an old pc, installing 4GB ram and a 256MB video card so that I could run Boxee to a Dell W3200 series TV that came with my apartment. It is connected via VGA, resolution is 1360x768, 24bit color, 60Htz refresh rate. Unfortunately, every time I use it I end up with a headache after less that 30 min. I have had my eyes check recently, and am able to play xbox (connected via hdmi) on the same TV without problems. What are the potential causes? My system seems to well meet or exceed the min requirements for boxee, XP, AMD Atholon 64 X2 Dual Core, 4GB RAM. Could it be the VGA cable? What is the most cost effective way to trouble shoot?

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• Can I re-attach SSH key forwarding through a disconnected Screen session?

  - by David Mackintosh

  I have a laptop on which I have pageant (the PuTTy SSH key agent) running. If I ssh to a system and launch screen, the ssh key forwarding works properly. However, if I disconnect from that screen session, log off, then later reconnect -- the key forwarding doesn't work any more. I am presuming that this is because when I reconnect the key forwarding is set up on different ports for the new ssh session than was the old one. Is there a way to teach an individual screen window to reconnect to the agent forwarding so that I can use my key to forward again?

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• NATing with a single-homed machine possible?

  - by Harry

  I have the following setup: a) a single-homed machine, A, that can see the Internet. b) other machines B, C, and D that cannot see the Internet. c) A, B, C, and D can see each other. d) all machines are running either RHEL 5.3 or Fedora 16. Question: Is it possible to have B, C, and D share the Internet connection with A somehow? Note, again, that machine A does not have a second NIC installed. (The solutions that I am finding on the Net assume A to be a dual-homed system!) Also, could you please recommend a set of book(s) or online resources for a current and in-depth coverage of iptables for people with only a basic knowledge of TCP/IP?

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• /srv/mm/Music (etc) Twonky won't scan here for media

  - by Hamid

  Is there something special about /srv/mm/ that Twonky server refuses to scan there? I previously had my system set up with all my Music, Video and Photo folders in /srv/mm shared by Samba, miniDLNA etc, with no problems. I came to install Twonky to replace miniDLNA and after two days of tearing my hair out, changing permissions and owners of the directories I ended up making a new directory at /multimedia and moved my Music, Video and Photo folders in there. Twonky then scanned them all straight away with no problems. I'm running Arch Linux (plugapps specifically) on a NAS. The solution is already implemented (moving the directory) I'm just wondering technically why Twonky might have refused to look for my media in the /srv/mm directories.

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• Using command line to connect to a wireless network with an http login

  - by Shane

  I'm trying to connect to a wifi network where it hijacks all requests and redirects you to a page where you have to agree to a terms of use before it lets you connect to the actual outside world. This is a pretty common practice, and usually doesn't pose much of a problem. However, I've got a computer running Ubuntu 9.10 server with no windowing system. How can I use the command line to agree to the terms of use? I don't have internet access on the computer to download packages via apt-get or anything like that. Sure, I can think of any number of workarounds, but I suspect there's an easy way to use wget or curl or something. Basically, I need a command line solution for sending an HTTP POST request essentially clicking on a button. For future reference, it'd be helpful to know how to send a POST request with, say, a username and password if I ever find myself in that situation in another hotel or airport.

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• Squid3 not working. Access denied

  - by Nitish

  I installed SQUID3 on a Linux machine with two ethernet interfaces (eth0 and eth1). I used the default settings in the squid.conf file and uncommented the two lines acl localnet src 192.168.0.0/16 and http_access allow localnet. eth0 is connected to a router, which provides Internet access. It is assigned an IP 192.168.1.2 by the router. I manually configured eth1 to have an IP address 192.168.5.1. It is connected to a switch. Systems having IP addresses 192.168.5.x are connected to this switch. I ran these two commands for NAT: iptables -t nat -A PREROUTING -i eth1 -p tcp -m tcp --dport 80 -j DNAT --to-destination 192.168.5.1:3128 iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 3128 But when I try to access internet from a system having IP 192.168.5.2 through the proxy I get an error that says "Access denied". What is wrong with my configuration?

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• How can you convert audio (3.5mm) to S/PDIF?

  - by SSumner

  I have a monitor that I want to use as my 'TV' for my gaming system. I connect it via HDMI, so sound and video go through the monitor, but I want sound to my headphones, which travels via optical (S/PDIF) cable. The monitor (Dell U2713HM) has a 3.5mm audio jack on it for line out, but I couldn't find anything that simply plugs in an converts the analog audio signal to a digital one so I can plug in a S/PDIF cable. What sort of device do I need to do this? (I am not asking for shopping recommendations, merely what options allow this conversion. I would prefer the smallest option, as space is limited).

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• Host a Debian repository on a Windows Web/Ftp server

  - by Dave

  At the risk of causing a matter vs. antimatter paradox that would end the world as we know it ... Is it possible to host a Debian repository on a Windows server? We have some applications which are available for Windows, Mac OS X, and Linux. Our web site, from where the application can be downloaded, is a Windows Server 2008 box running IIS 7. That is not going to change, and I would like to avoid having to purchase another server and/or domain. I would like to take advantage of the Debian packaging system so that I can just instruct users to add our repository to their software sources, and then they can install, get updates, resolve dependencies (some of which are not yet in the stable/main distributions of my target platforms), etc. The instructions I can find on the internet require linux-specific tools to create a local repository, but are unclear as to whether or not that can be copied to an FTP site as is, or if it requires some local daemons to be running or something.

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• Primary monitor keeps reverting back to the laptop display

  - by Celeritas

  A Macbook Pro running VMware Fusion has a guest operating system of Windows 7. The user often connects an external monitor to the laptop through an HDMI cable. For the display settings "extend the desktop" is selected and I keep setting the primary monitor as the external one but for some annoying reason it keeps changing back. So after Windows starts the taskbar and icons are on the laptop screen which we don't want. I know how to change it but it keeps changing back (and the computer user is non-technical).

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• WordPress and EverNote integration, any existing solutions?

  - by JXITC

  Actually the tag and category system in WordPress and EverNote are very similar, almost exactly the same. We can create a notebook/notebook group in EverNote, its counterpart in Wordpress is Category/Sub Category We can mutiple tag any note in EverNote, similarly we can tag any post in Wordpress as well! Since the two are so similar to each other in categorizing the article, I am wondering whether there is a existing solution to automatically convert between the two. Like one click to post my EverNote note to WordPress under the same category and same tag. Or pull down my WordPress article to my EverNote account under the same category and same tag. Preferably it can also handle image\video uploading issues as well. :) I saw a similar questions asked years ago: Posting from evernote to wordpress So I was wondering is there any new update for this idea right now?

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• SBS 2008 reinstall on new machine

  - by Jon

  We purchased a single license on Windows Small Business Server 2008 for a medical office, and soon after a power fault caused the server to overload, destroying the power supply and motherboard. I reinstalled on a new server, and have the domain up and running again, but under system properties it tells me I still need to activate windows, and that the product key currently entered is invalid for activation. I've been trying to figure out how to get in touch with Microsoft to explain the situation and get a new activation key issued without having to pay for another license which we can't afford, but the online documentation hasn't been particularly clear on the subject. Does anyone know how to do that, or if I do need the activation key to continue using SBS 2008? (It currently tells me I have 56 days left to activate) Any tips would be appreciated. I'm not strictly a computer guy and I'm feeling a little lost.

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