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• Network MP600 printer asking me to install new driver on laptop.

  - by user15003

  I have windows 7 home 32-bit on my desktop which is connected to my mp600 via USB. I have Vista 64-bit on my laptop. The MP600 is set for sharing and appears under printers in network under my pc's name. When I click on connect it says "The server for canon inkjet mp600 printer does not have the correct printer drivers installed........." I don't know what to do and it is really frustrating. It all worked fine before when I had XP 32 bit on my desktop

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• What is the crappiest network build you've ever seen?

  - by Ivan Petrushev

  This is only about networks you have seen personaly, not heared from others or seen on pictures at the web. Cables hanging from the ceiling lamps? Cables going trough culverts and other tubes? Switches and other equipment in the cleaner's closet? Cleaning lady's rags drying hanging from the cables? Key to the main node door possesed only by the janitor (or other non-tech and completely non-network-related guy)? Switches powered by foreign power adapters (cheaper and providing non-specified voltage or amperage)? All of this was in my old dormitory. Tell us about your bad experience.

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• What is the best way to setup a public and private wireless access point on the same home network?

  - by Dougman

  For my home network (with internet provided from a cable modem) I would like to setup a secure wireless access point that I use for all of my personal connections (home PC, iPhone, Xbox, etc) and also another public access point that friends and folks in the neighborhood may connect to (for good karma). I want to ensure that my private traffic cannot be accessed from users of the public access point. I currently have one router that is running the Tomato firmware that I use with WPA security. What is the best way to accomplish this kind of setup securely (if it is possible in a home environment)?

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• How to automatically enter username and password for network location in batch file?

  - by Phoenix Logan

  I have a batch file that copies files to a network location on WebDAV. The address looks something like this: \\xxxxxxxxx.net@SSL@2078\DavWWWRoot When I restart my computer, the batch file doesn't work and says "Access denied". Before a restart, it works, but it doesn't after the computer restarts. The problem is that it requires me to put in the username and password used to access the server. I have to browse to the server in File Explorer and sign in first. Even if I select the "Remember password" check box, it doesn't work. How can I get it to automatically sign in? I don't want to have to do this every time.

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• How would you diagnose an integrated network card that doesn't show up on the device list?

  - by Tomer Gabel

  I've been setting up a server based around a Gigabyte GA-G33M-DS2R motherboard (G33, PCH9R with integrated Realtek 811B network device. I've enabled it in the BIOS, but it doesn't show up in the pre-boot PCI device list, isn't recognized by Windows (even after installing the chipset and networking drivers) and doesn't even show up via lspci. I've tried cycling power, disabling, cycling again, enabling, cycling again etc. to no avail. I'm sort of at a loss at this point; the board isn't under warranty anymore, but I'd rather not have to replace it. Any advice would be greatly appreciated...

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• Is there a way to force Windows to recognize a network folder as a local drive, for the purposes of

  - by NoCatharsis

  I just started using the file search program Everything at work to search through documentation on our shared drives. This is after disappointments with Google Desktop and Windows Search. I love the speed of Everything, but I wish it were able to index other shared folders. My makeshift solution was to somehow force Windows to recognize the necessary shared folders as local drives, then add them to the index list. I have also considered using SyncToy, but this requires downloading all data to my drive, which could be terabytes of information - obviously not a good idea on a small company network. What would be the best solution here?

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• changing permissions for a network share takes longer on win2008 than on win2003, why is that?

  - by HugoRune

  Given a network share accessible for "everyone" in the domain, containing several 1000 files and folders When I change permissions for this share from read/write to only read (or vice versa) on windows 2003, the change takes effect instantly. When I do the same on a share on Windows 2008, the dialog stays open for a long time before closing when I click on OK, and the server appears to be accessing a lot of files. What is the reason for this delay? Does Windows 2008 also change ntfs permissions for all files inside the share? If so, why doesn't win2003 have to do that? I do not mind the delay, after all I do not have to change this stuff very often, but I am curious. What are the differences between 2003 and 2008 in this regard?

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• Can a mapped network drive be reconnected from the command line?

  - by Stephen Jennings

  On a daily basis I find myself in the Windows command prompt needing to access a network drive that is mapped but disconnected. I have yet to find a command that will reconnect this drive without unmapping and remapping (which leads to a password guessing game, since I don't own these computers). I would also like to be able to script this so every night the drive is reconnected if it has become disconnected somehow. The fastest solution I currently have is to: Type "start." to open explorer, Alt-D to focus the address bar, type the drive letter I want and press enter, and wait for it to display the drive contents, then finally, close explorer and go back to the command prompt. I know it's a minor inconvenience, but I'm often doing this through a slow VNC or PCAnywhere connection where doing anything through GUI is awful, so I'm just wondering if there's a better solution.

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• Why my Network Connection Properties don't show UAC prompt & settings change everytime I connect?

  - by Manish Shrivastaw

  I can't set my network connection interface properties, UAC prompt doesn't appear anymore for only this adapter interface. I disable Netbios but each time I connect it changes back to default. Earlier I could set & forget easily as UAC prompt showed for this dialup 3G connection. It's very frustrating to change settings every time. Is there any way to make adapter interface 'blacklisted' (remove from UAC whitelist) again. I can manually make a connection (that shows Uac prompt) but my dialler app doesn't work with that. Is there any registry entry for setting privilege for Napagent etc. Or what could be the reason, please guide. All I want is to set my connection properties (Tcp advanced settings) which won't change.

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• How do I get a rt2800usb wireless device working?

  - by Jii

  My brand new desktop running 13.04 has endless problems with wireless. Dozens of others are flooding forums with reports of the same problems. It worked fine for a few days, then there were a few days where it started having problems sometimes and working sometimes. Now it never works at all. I have 5+ devices all able to connect without any trouble at all, including iPhone, Android phone, 3DS, multiple game consoles, a laptop running windows 7, and even a second desktop machine running Ubuntu 12.04 sitting right behind the 13.04 machine. All other devices have full wireless bars displayed (strong signals). At any moment, one of the following is happening, and it changes randomly: Trying to connect forever, but never establishing a connection. Wireless icon constantly animating. Finds no wireless networks at all. (There are 12+ in range according to other devices.) Will not try to connect to the network. If I use the icon to connect, it will display "Disconnected" within a few seconds. Will continuously ask for the network password. Typing it in correctly does not help. Wireless is working fine. This happens sometimes. It can work for days at a time, or only 10 mins at a time. Various things that usually do nothing but sometimes fix the problem: Reboot. This has the best chance of helping, but it usually takes 5+ times. Disable/re-enable Wi-Fi using the wireless icon. Disable/re-enable Networking using the wireless icon. Use the icon to try and connect to a network (if found). Use the icon to open Edit Connections and delete my connection info, causing it to be recreated (once it's actually found again). Various things that seem to make no difference: Changing between using Linux headers in grub at bootup, between 3.10.0, 3.9.0, or 3.8.0. Move the wireless router very close to the desktop. Running sudo rfkill unblock all (I dunno what this is supposed to do.) I've used Ubuntu for 6 years and I've never had a problem with networking. Now I'm spending all my time reading through endless problem reports and trying all the answers. None of them have helped. I am doing this instead of getting work done, which is defeating the whole purpose of using Ubuntu. It's heartbreaking to be honest. In the current state of "no networks are showing up", here are outputs from the random things that other people are usually asked to run: lspic 00:00.0 Host bridge: Intel Corporation Haswell DRAM Controller (rev 06) 00:01.0 PCI bridge: Intel Corporation Haswell PCI Express x16 Controller (rev 06) 00:14.0 USB controller: Intel Corporation Lynx Point USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation Lynx Point MEI Controller #1 (rev 04) 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 04) 00:1a.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Lynx Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Lynx Point PCI Express Root Port #1 (rev d4) 00:1c.2 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d4) 00:1d.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Lynx Point LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation Lynx Point 6-port SATA Controller 1 [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation Lynx Point SMBus Controller (rev 04) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 610] (rev a1) 01:00.1 Audio device: NVIDIA Corporation GF119 HDMI Audio Controller (rev a1) 03:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 03) lsmod Module Size Used by e100 41119 0 nls_iso8859_1 12713 1 parport_pc 28284 0 ppdev 17106 0 bnep 18258 2 rfcomm 47863 12 binfmt_misc 17540 1 arc4 12573 2 rt2800usb 27201 0 rt2x00usb 20857 1 rt2800usb rt2800lib 68029 1 rt2800usb rt2x00lib 55764 3 rt2x00usb,rt2800lib,rt2800usb coretemp 13596 0 mac80211 656164 3 rt2x00lib,rt2x00usb,rt2800lib kvm_intel 138733 0 kvm 452835 1 kvm_intel cfg80211 547224 2 mac80211,rt2x00lib crc_ccitt 12707 1 rt2800lib ghash_clmulni_intel 13259 0 aesni_intel 55449 0 usb_storage 61749 1 aes_x86_64 17131 1 aesni_intel joydev 17613 0 xts 12922 1 aesni_intel nouveau 1001310 3 snd_hda_codec_hdmi 37407 1 lrw 13294 1 aesni_intel gf128mul 14951 2 lrw,xts mxm_wmi 13021 1 nouveau snd_hda_codec_realtek 46511 1 ablk_helper 13597 1 aesni_intel wmi 19256 2 mxm_wmi,nouveau snd_hda_intel 44397 5 ttm 88251 1 nouveau drm_kms_helper 49082 1 nouveau drm 295908 5 ttm,drm_kms_helper,nouveau snd_hda_codec 190010 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel cryptd 20501 3 ghash_clmulni_intel,aesni_intel,ablk_helper snd_hwdep 13613 1 snd_hda_codec snd_pcm 102477 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel btusb 18291 0 snd_page_alloc 18798 2 snd_pcm,snd_hda_intel snd_seq_midi 13324 0 i2c_algo_bit 13564 1 nouveau snd_seq_midi_event 14899 1 snd_seq_midi snd_rawmidi 30417 1 snd_seq_midi snd_seq 61930 2 snd_seq_midi_event,snd_seq_midi bluetooth 251354 22 bnep,btusb,rfcomm snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi lpc_ich 17060 0 snd_timer 29989 2 snd_pcm,snd_seq mei 46588 0 snd 69533 20 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device psmouse 97838 0 microcode 22923 0 soundcore 12680 1 snd video 19467 1 nouveau mac_hid 13253 0 serio_raw 13215 0 lp 17799 0 parport 46562 3 lp,ppdev,parport_pc hid_generic 12548 0 usbhid 47346 0 hid 101248 2 hid_generic,usbhid ahci 30063 3 libahci 32088 1 ahci e1000e 207005 0 ptp 18668 1 e1000e pps_core 14080 1 ptp sudo lshw -c network 00:00.0 Host bridge: Intel Corporation Haswell DRAM Controller (rev 06) 00:01.0 PCI bridge: Intel Corporation Haswell PCI Express x16 Controller (rev 06) 00:14.0 USB controller: Intel Corporation Lynx Point USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation Lynx Point MEI Controller #1 (rev 04) 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 04) 00:1a.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Lynx Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Lynx Point PCI Express Root Port #1 (rev d4) 00:1c.2 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d4) 00:1d.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Lynx Point LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation Lynx Point 6-port SATA Controller 1 [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation Lynx Point SMBus Controller (rev 04) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 610] (rev a1) 01:00.1 Audio device: NVIDIA Corporation GF119 HDMI Audio Controller (rev a1) 03:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 03) sudo iwconfig eth0 no wireless extensions. lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on sudo iwlist scan eth0 Interface doesn't support scanning. lo Interface doesn't support scanning. wlan0 No scan results NOTE: This dmesg was done after a reboot where the network manager was continuously displaying the "disconnected" message over and over. So it must have been trying to connect at this time. My network was displayed in the list of options, as the only option despite other devices picking up 12+ access points. The router channel is set to auto. dmesg | tail -30 [ 187.418446] wlan0: associated [ 190.405601] wlan0: disassociated from 00:14:d1:a8:c3:44 (Reason: 15) [ 190.443312] cfg80211: Calling CRDA to update world regulatory domain [ 190.443431] wlan0: deauthenticating from 00:14:d1:a8:c3:44 by local choice (reason=3) [ 190.451635] cfg80211: World regulatory domain updated: [ 190.451643] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 190.451648] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 190.451652] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 190.451656] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 190.451659] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 190.451662] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 191.824451] wlan0: authenticate with 00:14:d1:a8:c3:44 [ 191.850608] wlan0: send auth to 00:14:d1:a8:c3:44 (try 1/3) [ 191.884604] wlan0: send auth to 00:14:d1:a8:c3:44 (try 2/3) [ 191.886309] wlan0: authenticated [ 191.886579] rt2800usb 3-5.3:1.0 wlan0: disabling HT as WMM/QoS is not supported by the AP [ 191.886588] rt2800usb 3-5.3:1.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP [ 191.889556] wlan0: associate with 00:14:d1:a8:c3:44 (try 1/3) [ 192.001493] wlan0: associate with 00:14:d1:a8:c3:44 (try 2/3) [ 192.040274] wlan0: RX AssocResp from 00:14:d1:a8:c3:44 (capab=0x431 status=0 aid=3) [ 192.044235] wlan0: associated [ 193.948188] wlan0: deauthenticating from 00:14:d1:a8:c3:44 by local choice (reason=3) [ 193.981501] cfg80211: Calling CRDA to update world regulatory domain [ 193.984080] cfg80211: World regulatory domain updated: [ 193.984082] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 193.984084] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 193.984085] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 193.984085] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 193.984086] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 193.984087] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) The router uses MAC filtering, and security is WPA PSK with cipher as auto. So, any ideas? Or is the solution just to not use 13.04 unless you have a wired connection? (I don't have this option.) If so, please just tell me straight. I survived 9.04 Jaunty, and I can survive 13.04 Raring. Update #1 Results from trying Wild Man's first answer: jii@conan:~$ echo "options rt2800usb nohwcrypt=y" | sudo tee /etc/modprobe.d/rt2800usb.conf options rt2800usb nohwcrypt=y jii@conan:~$ sudo modprobe -rfv rt2800usb rmmod rt2800usb rmmod rt2800lib rmmod crc_ccitt rmmod rt2x00usb rmmod rt2x00lib rmmod mac80211 rmmod cfg80211 jii@conan:~$ sudo modprobe -v rt2800usb insmod /lib/modules/3.10.0-031000-generic/kernel/lib/crc-ccitt.ko insmod /lib/modules/3.10.0-031000-generic/kernel/net/wireless/cfg80211.ko insmod /lib/modules/3.10.0-031000-generic/kernel/net/mac80211/mac80211.ko insmod /lib/modules/3.10.0-031000-generic/kernel/drivers/net/wireless/rt2x00/rt2x00lib.ko insmod /lib/modules/3.10.0-031000-generic/kernel/drivers/net/wireless/rt2x00/rt2800lib.ko insmod /lib/modules/3.10.0-031000-generic/kernel/drivers/net/wireless/rt2x00/rt2x00usb.ko insmod /lib/modules/3.10.0-031000-generic/kernel/drivers/net/wireless/rt2x00/rt2800usb.ko nohwcrypt=y I tried: gksudo gedit /etc/pm/power.d/wireless but I didn't have the package. It said to install gksu. I tried that, but of course, not having Internet, I didn't get the package. So instead I did: sudo gedit /etc/pm/power.d/wireless Which created the file. Here is the body: #!/bin/sh /sbin/iwconfig wlan0 power off I then rebooted. No change. I tried adding exit 0 to the bottom of the wireless file, and rebooted. No change. Please note that this is a desktop machine. I'm assuming power management is primarily for laptops, but the iwconfig does state that power management is on, so who knows. The recommended router changes I did not do, since the current router settings are (I think) required for some of the older devices I have, and because the current settings work on all my modern devices including Ubuntu 12.04 and Windows 7. I do appreciate the advice though, and I'll look into it when I have time. Anything else to try? Update #2 I booted into Ubuntu 12.04.3 from a dvd, and the same problems exist. I have a separate old desktop machine with 12.04 installed that has no wireless problems at all. So obviously the problem is wireless hardware compatibility in both 12.04.03 LTS and 13.04. Update #3 The same problems exist even when using a wired connection. I plugged an ethernet cable directly to the router and the network manager added an "Auto Ethernet" entry, but it cannot establish a connection to it. So the problem is not specific to wireless. Meanwhile, I purchased a Trendnet N300 wireless USB adapter, TEW-664UB. I plugged it in, but I have no idea how to get Ubuntu to try and use it. Can anyone tell me how? Can I download a package on another computer and copy the .deb over to do an install, etc? I'm installing windows 7 to double check that the internet connection works there and it's not just some magically faulty hardware. Thanks for your help.

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• Share the same subnet between Internal network and VPN Clients

  - by Pascal

  I would like to set up a configuration where VPN clients connecting to my Forefront TMG can access all the resources of my Internal network without having the to use the option "Use default gateway on remote network" on the VPN's TCP/IP Ipv4 Advanced Settings. This is important to me, since they can use their own internet while accessing my network through VPN (the security implications of this are acceptable on my cenario) My Internal network runs on 10.50.75.x, and I set up Forefront TMG to relay the DHCP of my Internal network to the VPN clients, so they get IPs from the same range as the Internal network. This setup initially works, and the VPN clients use their own internet, and can access anything that is on the internal network. However, after a while, HTTP Proxy Traffic from the Internal network starts getting routed to the IP of the RRAS Dial In Interface, instead of the IP of the Internal's network gateway. When this happens, the HTTP Proxy starts getting denied for obvious reasons. My first question is: does this happen because Forefront TMG wasn't designed to handle a cenario that I described above, and it "loses itself"? My second question is: Is there any way to solve this problem, either through configuration or firewall policies? My third question is: If there's no way that it can work with the cenario above, is there another cenario that will solve my problem, and do what I'd like it to do properly? Below are my network routes: 1 => Local Host Access => Route => Local Host => All Networks 2 => VPN Clients to Internal Network => Route => VPN Clients => Internal 3 => Internet Access => NAT => Internal, Perimeter, VPN Clients => External 4 => Internal to Perimeter => Route => Internal, VPN Clients => Perimeter Tks!

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• Are there cloud network drives that let users lock files or mark them as "in use"?

  - by Brandon Craig Rhodes

  Having spent several hours reading about the features and limitations of services like DropBox and Jungle Disk and the hundreds of competitors they seem to have (as though everyone with an AWS account these days goes ahead and writes a file sharing application just for fun), I have yet to find one that would let a team of people at a small business collaborate without stepping all over each other's toes. At a small business there are often many small documents per project — estimates, contracts, project plans, budgets — and team members frequently have to open and edit them, with all sorts of problems happening if two people edit a file at once. Even if a sharing service is smart enough to keep both versions of the file created, most small-business software (like word processors, spreadsheets, estimating software, or billing systems) has no way to compare — much less to merge! — the changes in two rival versions of a file that two people edited at the same time without each other's knowledge. So, my question: are their cloud-based file sharing solutions that not only provide a virtual network drive that people can access, but that also let users lock files — even if it's not a real lock but just a flag or indicator — that could possibly prevent remote workers from both editing the same file at once? Having one person wait for another person to finish editing is a very, very small inconvenience compared to the hour or more than it can take to compare two estimates by hand until you find and resolve the rival changes. Given this fact, I am surprised that almost none of the popular file sharing solutions seem to recognize this problem and provide some solution! Does anyone know of a service that does?

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• Are there cloud network drives that let users lock files or mark them as "in use"?

  - by Brandon Craig Rhodes

  Having spent several hours reading about the features and limitations of services like DropBox and Jungle Disk and the hundreds of competitors they seem to have (as though everyone with an AWS account these days goes ahead and writes a file sharing application just for fun), I have yet to find one that would let a team of people at a small business collaborate without stepping all over each other's toes. At a small business there are often many small documents per project — estimates, contracts, project plans, budgets — and team members frequently have to open and edit them, with all sorts of problems happening if two people edit a file at once. Even if a sharing service is smart enough to keep both versions of the file created, most small-business software (like word processors, spreadsheets, estimating software, or billing systems) has no way to compare — much less to merge! — the changes in two rival versions of a file that two people edited at the same time without each other's knowledge. So, my question: are their cloud-based file sharing solutions that not only provide a virtual network drive that people can access, but that also let users lock files — even if it's not a real lock but just a flag or indicator — that could possibly prevent remote workers from both editing the same file at once? Having one person wait for another person to finish editing is a very, very small inconvenience compared to the hour or more than it can take to compare two estimates by hand until you find and resolve the rival changes. Given this fact, I am surprised that almost none of the popular file sharing solutions seem to recognize this problem and provide some solution! Does anyone know of a service that does?

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• How to forceably unmount stuck network share in Mac OS X?

  - by Kyle Lowry

  Not long ago my Xserve failed (power loss) while an iMac was working with files on a particular network share (called "Work Share"). This volume, "Work Share", is now stuck. It can't be seen in the GUI, you can only detect it using the Terminal. Even after power cycling over the course of several days, ls -a still shows that it's there, but I can't unmount it using any command - not even as root in single user mode. Every time I attempt to unmount that volume, I get the message that the resource is busy (which it can't possibly be since nothing is using it), and error code 4915. The issue is that when I mount the real "Work Share", it internally is renamed to "Work Share-1", which breaks all my links, and several files in the share. If I can't unmount the false "Work Share", then that computer would be unuseable without a reformat, I would imagine - and I don't want it to have to come to that. I've tried everything I can think of - it looks like sudo can't save me now. Any ideas on how to unmount this stuck volume?

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• Guest can't access host windows network share

  - by Asteroza

  HI folks, I've recently run into a strange problem after upgrading to VMware player 3. Certain virtual machines (currently an XP and a VIsta VM) seem to have lost the ability to access the host (XP) network shared folders (SMB). Both VM machines are bridged networking, firewall is up. Host firewall is up. Host and guests use DHCP. All OS are workgroup connected. The Vista VM I am not completely sure, but the XP VM did have access to the host's network shared folders after the player upgrade. Then today it wouldn't work, network path can't be found. Now here's the wierd part. The host's network shared folders can be accessed properly by other PC's on the network (and as far as I know, no settings have been changed). The host is pingable from the guests, and name resolution works. The guests can access network shares on other PC's in the network, and access the internet. My Network Places shows the host PC, but double clicking on it takes a long time before it finally times out with an error. Doing a wireshark packet capture, the guest is sending out the protocol negotiation, and the host is sending a response, but after that the guest behaves like it didn't receive anything and is doing TCP retransmissions. Anybody have any idea what could be wrong? Yes I know I can drag and drop files or setup the special VMware shared folders, but I want to access the host just like any other network accessible shared folder. It just seems really odd when any other computer works, just not between the guest and host.

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• Connect to WEP Wireless Network by command line on Ubuntu

  - by Tim

  Hi, I am a newbie to both network and Linux. I am now trying to connect to a WEP wireless network by command line on my Ubuntu 8.10, because the Network Manager does not support 64 bit WEP. (1) I firstly bring down the Network Manager and then try to connect to a wireless network, whose essid is candy and password is 5673212741. But it fails as shown in the following. I wonder why and how to do it correctly? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwconfig wlan0 essid candy opendo iwconfig wlan0 key 18018ce78e open $ sudo iwconfig wlan0 key 5673212741 open $ sudo dhclient wlan0 There is already a pid file /var/run/dhclient.pid with pid 9971 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on Socket/fallback DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 20 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9 No DHCPOFFERS received. No working leases in persistent database - sleeping. $ ping www.bbc.co.uk ping: unknown host www.bbc.co.uk (2) A less important question: why the scan for wireless networ does not work after I bring down the Network Manager? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwlist wlan0 scan wlan0 Interface doesn't support scanning : Network is down Thanks and regards!

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• Arch Linux: eth0 no carrier - network fails at boot

  - by user905686

  The problem My computer is connected to a network where dhcp is required. So my network configuration in /etc/rc.conf looks like interface=eth0 address= netmask= broadcast= gateway= My deamons are DAEMONS=(!hwclock syslog-ng network netfs crond ntpd) With this configuration, Arch hangs at boot a long time at "Network" (Still it says "[done]", but after boot I have no connection). I found out two workaround: Workaround 1 remove network from deamons run mii-tool --reset eth0 and dhcpcd eth0 after boot (somehow it does not work when placing these commands in /etc/rc.local. Then dhcp work very quickly (because of the reset!). Before executing the first command, ip link show eth0 has "NO CARRIER" in output. Afterwards, it doesn´t. (Also, mii-tool first shows "no link", afterwards eth0: 10 Mbit, half duplex, link ok. Workaround 2 Change network configuration to interface=eth0 address=x.y.z.21 netmask=255.255.255.0 broadcast=xxx.y.z.255 gateway=x.y.z.254 whereas x, y, z build the specific adresses of the network (Though dhcp is used, I get a static ip). Add the commands mii-tool --reset eth0 and dhcpcd eth0 to /etc/rc.local Now network starts quickly at boot (though I don´t know if successfully), the commands in /etc/rc.local are executed and the connection is fine after login. What to do? So the problem seems to be that dhcpcd stucks at "wating for carrier" or sth. I do not like the workaround, because some deamons need network (though they seem to start). What can I do to have eth0 ready for dhcp at boot? Or is there another problem?

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• Ubuntu 10.04 network manager issues

  - by Shark

  I was using the default network manager to connect to my wi-fi network, but if the connection is dropped or router restarted the network manager wont reconnect automatically after i guess a couple of tries and just gives a pop-up to connect manually . To avoid this annoyance I installed WICD but though it does try to reconnect to the network after a drop in connection it is unable to resolve the ip address and i am left with an even bigger annoyance . 1. Is there a way to counter either of these issues ? 2. Something like a background process that will check network status periodically and then try to connect to a favored network ? Edit- out put of lshw -C network *-network description: Wireless interface product: Broadcom Corporation vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:12:00.0 logical name: eth1 version: 01 serial: c0:cb:38:18:9b:7f width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=wl0 driverversion=5.60.48.36 ip=192.168.11.2 latency=0 multicast=yes wireless=IEEE 802.11 resources: irq:17 memory:fbc00000-fbc03fff *-network description: Ethernet interface product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:13:00.0 logical name: eth0 version: 02 serial: f0:4d:a2:94:2d:74 size: 10MB/s capacity: 100MB/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10MB/s resources: irq:29 ioport:e000(size=256) memory:d0b10000-d0b10fff(prefetchable) memory:d0b00000-d0b0ffff(prefetchable) memory:fb200000-fb21ffff(prefetchable)

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• How to auto syncronize files with network drive on Windows XP?

  - by stephenmm

  Windows XP: I would like to auto synchronize files between a a local drive and a network drive. I am aware of Windows Briefcase but it is very slow and I have to tell it to synchronize. I really like the way Dropbox does there synchronization as it is almost instantaneous. It is very impressive. I would just use Dropbox but I cannot install it on the remote machine. Is there some tool or script I can create that will watch a particular folder for any changes and then sync those changes to the networked drive automatically and nearly instantaneously? CLARIFICATION: I would like this tool/script to to be a daemon that starts when windows starts and continually monitors a folder for any changes to its contents. Once it observes changes in the source or the destination it synchronizes the files that changed (Very similar to the way Dropbox works). I have a good idea about how I would do this in a Perl script and if a tool does not exist that does this I will write it myself in Perl. If someone has already done this can they share the script?

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• ubuntu 12.04 kvm virtual server network setup, can't get the machine to be connectable

  - by xyious

  I have worked on my Ubuntu Server host for weeks now and I just can not manage to get the virtual machines into the network.... here's what I need to do: I need to be able to create virtual machines that have IP addresses that can be reached from the outside (192.168 network). I need to be able to connect to the virtual machines through ssh, ftp, http and preferably https, anything else doesn't matter that much. So far everything seems simple enough and I have a lot of leeway in terms of IP address range and server/client configuration. I have the option of taking part of a /24 net as most IPs aren't used, and if it's absolutely necessary I have the option of creating a new /24 subnet. Also have the option of reformatting and reinstalling OS on the host and recreating the virtual machines as nothing has been done other than trying to get virtual machines to work. I would prefer if the virtual machines were just part of the normal network which would be 192.168.5.0/24. The host machine has 2 network cards so I don't even necessarily need the Host to be connectable in the same /24 network. I have tried (I think) just about everything from about 5 different tutorials on bridging (giving br0 the same IP that eth0 used to have (Host is able to connect to VM and vice versa, VM doesn't have outside network access), having eth0 set up like it always was and having br0 have a different IP (same as above), NAT with port forwarding (which I would have preferred not to use but will if it works), turning off one of the hosts network cards and just using one of them, different subnets.... etc. I do know my way around iptables fairly well.... Host is 64bit Ubuntu Server 12.04, using libvirt/kvm. edits: Local network is 192.168.5.0/24, host has static ip 192.168.5.254, GW .5.1 which is also nameserver. We have a second Local network at 192.168.10.0/24 with .10.1 GW, but both hosts and VMs were supposed to go into the .5 subnet. The .10 subnet isn't required, but it wouldn't be horrible if the Host were only accessible in the .10 subnet.

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• Share a Printer on Your Network from Vista or XP to Windows 7

  - by Mysticgeek

  The other day we looked at sharing a printer between Windows 7 machines, but you may only have one Windows 7 machine and the printer is connected to a Vista or XP computer. Today we show you how to share a printer from either Vista or XP to Windows 7. We previously showed you how to share files and printers between Windows 7 and XP. But what if you have a printer connected to an XP or Vista machine in another room, and you want to print to it from Windows 7? This guide will walk you through the process. Note: In these examples we’re using 32-bit versions of Windows 7, Vista, and XP on a basic home network. We are using an HP PSC 1500 printer, but keep in mind every printer is different so finding and installing the correct drivers will vary. Share a Printer from Vista To share the printer on a Vista machine click on Start and enter printers into the search box and hit Enter. Right-click on the printer you want to share and select Sharing from the context menu. Now in Printer Properties, select the Sharing tab, mark the box next to Share this printer, and give the printer a name. Make sure the name is something simple with no spaces then click Ok. Share a Printer from XP To share a printer from XP click on Start then select Printers and Faxes. In the Printers and Faxes window right-click on the printer to share and select Sharing. In the Printer Properties window select the Sharing tab and the radio button next to Share this printer and give it a short name with no spaces then click Ok. Add Printer to Windows 7 Now that we have the printer on Vista or XP set up to be shared, it’s time to add it to Windows 7. Open the Start Menu and click on Devices and Printers. In Devices and Printers click on Add a printer. Next click on Add a network, wireless or Bluetooth printer. Windows 7 will search for the printer on your network and once its been found click Next. The printer has been successfully added…click Next. Now you can set it as the default printer and send a test page to verify everything works. If everything is successful, close out of the add printer screens and you should be good to go.   Alternate Method If the method above doesn’t work, you’ll can try the following for either XP or Vista. In our example, when trying to add the printer connected to our XP machine, it wasn’t recognized automatically. If you’re search pulls up nothing then click on The printer that I want isn’t listed. In the Add Printer window under Find a printer by name or TCP/IP address click the radio button next to Select a shared printer by name. You can either type in the path to the printer or click on Browse to find it. In this instance we decided to browse to it and notice we have 5 computers found on the network. We want to be able to print to the XPMCE computer so we double-click on that. Type in the username and password for that computer… Now we see the printer and can select it. The path to the printer is put into the Select a shared printer by name field. Wait while Windows connects to the printer and installs it… It’s successfully added…click Next. Now you can set it as the default printer or not and print a test page to make sure everything works successfully. Now when we go back to Devices and Printers under Printers and Faxes, we see the HP printer on XPMCE. Conclusion Sharing a printer from one machine to another can sometimes be tricky, but the method we used here in our setup worked well. Since the printer we used is fairly new, there wasn’t a problem with locating any drivers for it. Windows 7 includes a lot of device drivers already so you may be surprised on what it’s able to install. Your results may vary depending on your type of printer, Windows version, and network setup. This should get you started configuring the machines on your network—hopefully with good results.  If you you have two Windows 7 computers, then sharing a printer or files is easy through the Homegroup feature. You can also share a printer between Windows 7 machines on the same network but not Homegroup. Similar Articles Productive Geek Tips Share a Printer Between Windows 7 Machines Not in the Same HomegroupShare Files and Printers between Windows 7 and XPHow To Share Files and Printers Between Windows 7 and VistaEnable Mapping to \HostnameC$ Share on Windows 7 or VistaUse the Homegroup Feature in Windows 7 to Share Printers and Files TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Enable Check Box Selection in Windows 7 OnlineOCR – Free OCR Service Betting on the Blind Side, a Vanity Fair article 30 Minimal Logo Designs that Say More with Less LEGO Digital Designer – Free Create a Personal Website Quickly using Flavors.me

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• Share a Printer on Your Network from Vista or XP to Windows 7

  - by Mysticgeek

  The other day we looked at sharing a printer between Windows 7 machines, but you may only have one Windows 7 machine and the printer is connected to a Vista or XP computer. Today we show you how to share a printer from either Vista or XP to Windows 7. We previously showed you how to share files and printers between Windows 7 and XP. But what if you have a printer connected to an XP or Vista machine in another room, and you want to print to it from Windows 7? This guide will walk you through the process. Note: In these examples we’re using 32-bit versions of Windows 7, Vista, and XP on a basic home network. We are using an HP PSC 1500 printer, but keep in mind every printer is different so finding and installing the correct drivers will vary. Share a Printer from Vista To share the printer on a Vista machine click on Start and enter printers into the search box and hit Enter. Right-click on the printer you want to share and select Sharing from the context menu. Now in Printer Properties, select the Sharing tab, mark the box next to Share this printer, and give the printer a name. Make sure the name is something simple with no spaces then click Ok. Share a Printer from XP To share a printer from XP click on Start then select Printers and Faxes. In the Printers and Faxes window right-click on the printer to share and select Sharing. In the Printer Properties window select the Sharing tab and the radio button next to Share this printer and give it a short name with no spaces then click Ok. Add Printer to Windows 7 Now that we have the printer on Vista or XP set up to be shared, it’s time to add it to Windows 7. Open the Start Menu and click on Devices and Printers. In Devices and Printers click on Add a printer. Next click on Add a network, wireless or Bluetooth printer. Windows 7 will search for the printer on your network and once its been found click Next. The printer has been successfully added…click Next. Now you can set it as the default printer and send a test page to verify everything works. If everything is successful, close out of the add printer screens and you should be good to go.   Alternate Method If the method above doesn’t work, you’ll can try the following for either XP or Vista. In our example, when trying to add the printer connected to our XP machine, it wasn’t recognized automatically. If you’re search pulls up nothing then click on The printer that I want isn’t listed. In the Add Printer window under Find a printer by name or TCP/IP address click the radio button next to Select a shared printer by name. You can either type in the path to the printer or click on Browse to find it. In this instance we decided to browse to it and notice we have 5 computers found on the network. We want to be able to print to the XPMCE computer so we double-click on that. Type in the username and password for that computer… Now we see the printer and can select it. The path to the printer is put into the Select a shared printer by name field. Wait while Windows connects to the printer and installs it… It’s successfully added…click Next. Now you can set it as the default printer or not and print a test page to make sure everything works successfully. Now when we go back to Devices and Printers under Printers and Faxes, we see the HP printer on XPMCE. Conclusion Sharing a printer from one machine to another can sometimes be tricky, but the method we used here in our setup worked well. Since the printer we used is fairly new, there wasn’t a problem with locating any drivers for it. Windows 7 includes a lot of device drivers already so you may be surprised on what it’s able to install. Your results may vary depending on your type of printer, Windows version, and network setup. This should get you started configuring the machines on your network—hopefully with good results.  If you you have two Windows 7 computers, then sharing a printer or files is easy through the Homegroup feature. You can also share a printer between Windows 7 machines on the same network but not Homegroup. Similar Articles Productive Geek Tips Share a Printer Between Windows 7 Machines Not in the Same HomegroupShare Files and Printers between Windows 7 and XPHow To Share Files and Printers Between Windows 7 and VistaEnable Mapping to \HostnameC$ Share on Windows 7 or VistaUse the Homegroup Feature in Windows 7 to Share Printers and Files TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Enable Check Box Selection in Windows 7 OnlineOCR – Free OCR Service Betting on the Blind Side, a Vanity Fair article 30 Minimal Logo Designs that Say More with Less LEGO Digital Designer – Free Create a Personal Website Quickly using Flavors.me

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• Find only physical network adapters with WMI Win32_NetworkAdapter class

  - by Mladen Prajdic

  WMI is Windows Management Instrumentation infrastructure for managing data and machines. We can access it by using WQL (WMI querying language or SQL for WMI). One thing to remember from the WQL link is that it doesn't support ORDER BY. This means that when you do SELECT * FROM wmiObject, the returned order of the objects is not guaranteed. It can return adapters in different order based on logged-in user, permissions of that user, etc… This is not documented anywhere that I've looked and is derived just from my observations. To get network adapters we have to query the Win32_NetworkAdapter class. This returns us all network adapters that windows detect, real and virtual ones, however it only supplies IPv4 data. I've tried various methods of combining properties that are common on all systems since Windows XP. The first thing to do to remove all virtual adapters (like tunneling, WAN miniports, etc…) created by Microsoft. We do this by adding WHERE Manufacturer!='Microsoft' to our WMI query. This greatly narrows the number of adapters we have to work with. Just on my machine it went from 20 adapters to 5. What was left were one real physical Realtek LAN adapter, 2 virtual adapters installed by VMware and 2 virtual adapters installed by VirtualBox. If you read the Win32_NetworkAdapter help page you'd notice that there's an AdapterType that enumerates various adapter types like LAN or Wireless and AdapterTypeID that gives you the same information as AdapterType only in integer form. The dirty little secret is that these 2 properties don't work. They are both hardcoded, AdapterTypeID to "0" and AdapterType to "Ethernet 802.3". The only exceptions I've seen so far are adapters that have no values at all for the two properties, "RAS Async Adapter" that has values of AdapterType = "Wide Area Network" and AdapterTypeID = "3" and various tunneling adapters that have values of AdapterType = "Tunnel" and AdapterTypeID = "15". In the help docs there isn't even a value for 15. So this property was of no help. Next property to give hope is NetConnectionId. This is the name of the network connection as it appears in the Control Panel -> Network Connections. Problem is this value is also localized into various languages and can have different names for different connection. So both of these properties don't help and we haven't even started talking about eliminating virtual adapters. Same as the previous one this property was also of no help. Next two properties I checked were ConfigManagerErrorCode and NetConnectionStatus in hopes of finding disabled and disconnected adapters. If an adapter is enabled but disconnected the ConfigManagerErrorCode = 0 with different NetConnectionStatus. If the adapter is disabled it reports ConfigManagerErrorCode = 22. This looked like a win by using (ConfigManagerErrorCode=0 or ConfigManagerErrorCode=22) in our condition. This way we get enabled (connected and disconnected adapters). Problem with all of the above properties is that none of them filter out the virtual adapters installed by virtualization software like VMware and VirtualBox. The last property to give hope is PNPDeviceID. There's an interesting observation about physical and virtual adapters with this property. Every virtual adapter PNPDeviceID starts with "ROOT\". Even VMware and VirtualBox ones. There were some really, really old physical adapters that had PNPDeviceID starting with "ROOT\" but those were in pre win XP era AFAIK. Since my minimum system to check was Windows XP SP2 I didn't have to worry about those. The only virtual adapter I've seen to not have PNPDeviceID start with "ROOT\" is the RAS Async Adapter for Wide Area Network. But because it is made by Microsoft we've eliminated it with the first condition for the manufacturer. Using the PNPDeviceID has so far proven to be really effective and I've tested it on over 20 different computers of various configurations from Windows XP laptops with wireless and bluetooth cards to virtualized Windows 2008 R2 servers. So far it always worked as expected. I will appreciate you letting me know if you find a configuration where it doesn't work. Let's see some C# code how to do this: ManagementObjectSearcher mos = null;// WHERE Manufacturer!='Microsoft' removes all of the // Microsoft provided virtual adapters like tunneling, miniports, and Wide Area Network adapters.mos = new ManagementObjectSearcher(@"SELECT * FROM Win32_NetworkAdapter WHERE Manufacturer != 'Microsoft'");// Trying the ConfigManagerErrorCode and NetConnectionStatus variations // proved to still not be enough and it returns adapters installed by // the virtualization software like VMWare and VirtualBox// ConfigManagerErrorCode = 0 -> Device is working properly. This covers enabled and/or disconnected devices// ConfigManagerErrorCode = 22 AND NetConnectionStatus = 0 -> Device is disabled and Disconnected. // Some virtual devices report ConfigManagerErrorCode = 22 (disabled) and some other NetConnectionStatus than 0mos = new ManagementObjectSearcher(@"SELECT * FROM Win32_NetworkAdapter WHERE Manufacturer != 'Microsoft' AND (ConfigManagerErrorCode = 0 OR (ConfigManagerErrorCode = 22 AND NetConnectionStatus = 0))");// Final solution with filtering on the Manufacturer and PNPDeviceID not starting with "ROOT\"// Physical devices have PNPDeviceID starting with "PCI\" or something else besides "ROOT\"mos = new ManagementObjectSearcher(@"SELECT * FROM Win32_NetworkAdapter WHERE Manufacturer != 'Microsoft' AND NOT PNPDeviceID LIKE 'ROOT\\%'");// Get the physical adapters and sort them by their index. // This is needed because they're not sorted by defaultIList<ManagementObject> managementObjectList = mos.Get() .Cast<ManagementObject>() .OrderBy(p => Convert.ToUInt32(p.Properties["Index"].Value)) .ToList();// Let's just show all the properties for all physical adapters.foreach (ManagementObject mo in managementObjectList){ foreach (PropertyData pd in mo.Properties) Console.WriteLine(pd.Name + ": " + (pd.Value ?? "N/A"));}   That's it. Hope this helps you in some way.

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• Image 8-connectivity without excessive branching?

  - by shoosh

  I'm writing a low level image processing algorithm which needs to do alot of 8-connectivity checks for pixels. For every pixel I often need to check the pixels above it, below it and on its sides and diagonals. On the edges of the image there are special cases where there are only 5 or 3 neighbors instead of 8 neighbors for a pixels. The naive way to do it is for every access to check if the coordinates are in the right range and if not, return some default value. I'm looking for a way to avoid all these checks since they introduce a large overhead to the algorithm. Are there any tricks to avoid it altogether?

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• dynamic broadcast receiver for connectivity changes

  - by android-dev

  I'm trying to register a dynamic broadcast receiver using the following: BroadcastReceiver connectivityReceiver = new ConnectivityChangeIntentReceiver(); IntentFilter connectivityFilter = new IntentFilter(); filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); filter.addAction(android.net.ConnectivityManager.CONNECTIVITY_ACTION); myApplicationContext.registerReceiver(connectivityReceiver, connectivityFilter); but I see my ConnectivityChangeIntentReceiver.onReceive method is not called when I turn off Wifi through settings or change to airplane mode. Has anyone faced a similar problem? I do not want to statically register the receiver in the Manifest file, as I don't want my app to be started by connectivity changes.

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