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  • Does using a single cable to connect two switches create a bottleneck?

    - by Nick
    I realise this may be a stupid question for some, but it's something I've always wondered about. Let's say we have two gigabit switches and all of the devices on the network are also gigabit. If 10 computers connected to switch A need to transfer large amounts of data to a server on Switch B (at the same time), is the maximum transfer speed of each connection limited by the bandwidth of the connection between the two switches? In other words, would each computer only be able to transfer at a speed of one gigabit divided by the 10 machines trying to use the "bridge" between switches? If so, are there any workarounds so that every device can use it's maximum speed from point to point?

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  • What can I do to speed up my HTC Hero?

    - by Nick Bolton
    When I first got my HTC Hero phone it was very fast. But after a couple of weeks it's become slow. Typically (on any device), I've noticed that this is caused by having too much running at once... Is there a way I can limit the number of applications that are open? I think there's a task manager application in the market, so I'll try this. Does anyone have any further suggestions?

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  • Launching Installer Via Powershell and WinRM and Nothing Happens

    - by Nick DeMayo
    I'm currently working on a Powershell script to run some Microsoft Hotfix installers remotely on several Windows Server 2008 R2 servers that I manage. Basically, the script copies all the appropriate files up to the server, and then runs the installer via Invoke-Command, like so: function InstallCU { Write-Host "Installing June 2013 CU..." Invoke-Command -ComputerName $ServerName -ScriptBlock { Start-Process "c:\aaa\prjcusp2\ubersrvprj2010-kb2817530-fullfile-x64-glb.exe" -ArgumentList "/passive" } } If I run the "Start-Process" command locally on the server, the installer runs properly. However, when trying to run it remotely, nothing happens (actually, I can see the installer start up in Task Manager, but it closes a couple seconds later and doesn't run). I've attempted giving the Invoke-Command -Credentials, I've turned off UAC on the server, and I've ensured that my WinRM settings (running 'winrm quickconfig' and setting TrustedHosts to *) are correct. I've also tried having the Invoke-Command script run a local Powershell script to run the installer and changing the Argument from '/passive' to 'quiet' (in case it can't remotely launch something that has a UI), but again, no dice. Is there anything else I can try, or am I just not going to be able to do this?

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  • 'Multi' partition recipe from Ubuntu alternate install CD without preseed

    - by Nick Meyer
    The Ubuntu/Debian installer includes a built-in guided partitioning recipe, called 'multi', which creates separate /home, /usr, /var, and /tmp partitions. It can be selected by starting the installer with a preseed file. You can see it described in the Karmic install guide: # You can choose one of the three predefined partitioning recipes: # - atomic: all files in one partition # - home: separate /home partition # - multi: separate /home, /usr, /var, and /tmp partitions d-i partman-auto/choose_recipe select atomic Is there any way to use guided partitioning with this recipe from the Ubuntu alternate install CD without the need to create a preseed file?

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  • match and export subject line and from header with procmail

    - by Nick
    I would like to use procmail or a combination of procmail and formail to take an email message and match a specific keyword in the Subject: line/header, and if matched, export the contents of the Subject: line/header, and the contents of the From: line/header to a perl script. I have researched this, and have not been able to get this working all the way. I am new to procmail, and I assume I need to use a nesting block, but I am not sure how to get the data and then export it. I have been able to match the subject line and export it to a perl script where it is read via ARGV0, but get lost when trying to export and match multiple fields. I tried subscribing to the procmail listserv, but it appears to be broken. Can someone help me with this, please?

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  • postfix says mail sent ok, message does not arrive in ISPs inbox? no reject in log?

    - by Nick
    When I send a test message from my mail server to my @bellsouth.net email, The postfix log shows it was sent OK, but the message never arrives in my bellsouth inbox. Shouldn't I get a failure notice or a bounce if At&T is blocking the messages? I'm trying to troubleshoot why some customers aren't getting emails, but if there's nothing in mail.log to say the message is rejected, how do I know which messages were delivered successfully? The log shows: Feb 27 09:02:36 MyHOSTNAME postfix/pickup[26175]: D53A72713E5: uid=0 from=<root> Feb 27 09:02:36 MyHOSTNAME postfix/cleanup[26487]: D53A72713E5: message-id=<[email protected]> Feb 27 09:02:36 MyHOSTNAME postfix/qmgr[5595]: D53A72713E5: from=<[email protected]>, size=878, nrcpt=1 (queue active) Feb 27 09:02:37 MyHOSTNAME postfix/smtp[26490]: D53A72713E5: to=<[email protected]>, relay=gateway-f1.isp.att.net[204.127.217.16]:25, delay=0.57, delays=0.11/0.03/0.23/0.19, dsn=2.0.0, status=sent (250 ok ; id=20120227140036M0700qer4ne) Feb 27 09:02:37 MyHOSTNAME postfix/qmgr[5595]: D53A72713E5: removed The AT&T server accepted the message, right? I happen to have an At&T/Bellsouth email, but I don't have an account with every ISP we send to. I need some way of knowing if a message is getting to its destination or not. Is there any setting in my main.cf file that would affect whether or not we get reject/bounce notices?

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  • How Do I Get poledit.exe Out Of Windows 2000 Service Pack 4?

    - by Nick
    I've read that I can get poledit.exe from Windows 2000 Service Pack 4, but have been unable to figure out how. I've downloaded the service pack from Microsoft's website, "W2KSP4_EN.EXE", and extracted it using the "/x" option on the command line: W2KSP4_EN.EXE /x Which produced an i386 folder with a bunch of files in it, but poledit.exe isn't there. Theres a "poledit.ex_", but changing the "_" to an "e" and trying to execute it results in the error: The NTVDM CPU has encountered an illegal instruction. I'm trying to do this on a winXP Pro machine. I know I've gotten this to work before, but don't remember how I did it. What am I missing?

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  • Looking for CPU/GPU Temperature Monitor with Live Logging

    - by Nick Gotch
    I'm looking for a CPU/GPU temperature monitor with live logging that's also free. This question recommended some good software but doesn't meet my needs. I tried HWMonitor and it works great except it doesn't have live logging. I need live logging because the system I'm using seems to overheat and shutdown (assuming it's related to overheating) and I'd like to catch the failing point.

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  • User-friendly program to create editable & searchable pdf files, like tax & application forms and su

    - by Nick Gorbikoff
    Hello. Can somebody recommend user-friendly program that will create ( or convert from Excel & Word, or OpenOffice) editable pdf forms. You know like tax forms, that some of us filled out. Where you can create a form with predefined format and stationary, but let user edit/fill out fields. I need something user-friendly that a regular person can use. I'm NOT looking for a pdf library ( I already use wkhtmltopdf for generating pdfs programmaticaly). The reason is that we have about 400 documents ( internal expense forms, traing forms, etc) in .doc and .xls format that we want to convert to editable pdf ( so that people don't have to fill them out by hand). Coding 400 templates and then converting them using some lib or command line tool - is not my idea of fun, espsecially since those form change all the time. I'd like to just give HR and Quality department the tool, so that they can maintain those documents. I looked at everything listed on this page ( http://www.cogniview.com/convert-pdf-to-excel/post/pdf-editing-creation-50-open-sourcefree-alternatives-to-adobe-acrobat/ ), but can't find what I need. Thank you!!!

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  • How to update OSX when space is tight?

    - by Nick L
    Software Update has notified me of a new OSX system update (including the Mac App Store). It claims to be about 1.6GB in size. I have 4.6GB of free space on my hard drive. However, when I attempt to actually run the update, it fails because it claims to need 6.9GB of free space. Is there any particular reason Software Update needs so much space beyond the downloaded file size and are there any work arounds? Thanks.

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  • Cannot select fields with the mouse Windows 7

    - by Nick
    Lately I cannot select a word (field) with the mouse. When I left click on a field drag the mouse to the end of the field then release the button, the selection (blue shading) disappears. Sometimes after several tries the shading stays and I can delete the field. Up to a week ago everything worked fine. Is this a bug, virus? I am using Windows 7 Also, in Live Mail after I finished reading an item in the Inbox, I click the X in the upper right corner to return to the rest of my mail, but instead it takes me back to the desktop and have to double click the Live Mail again to continue. Again this only happened recently. Things worked OK before and this does not happen regularly.

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  • Passing all traffic through Cloudflare

    - by Nick
    I am new to Linux System Administration and I am experimenting with iptables trying to learn how to really lock down a system with them. And one thing a friend of mine recommended was that there was a way to pass all incoming traffic through Cloudflare so even if attackers resolved the server ip they still couldn't (D)dos it directly. This is exactly what they said: "Simply config your servers iptables to only allow incoming connections from CloudFlares IP ranges then set it to allow only your IP/IP range to connect on port 21 (SSH)" Could someone help me on what command I'd need to run for Ubuntu to get this effect?

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  • Simple options for port forwarding to a different port?

    - by Nick
    I have three network printers at our local office, all of which listen on port 9100. Non of them offer the option of changing the listening port. We have a single public static IP address, and access to our main network is through a Linksys WRT-54G. We need to be able to print to these printers from outside the office. The problem is, with the 54G, I can only forward a port to the SAME port on a particular IP address. What I really need though is a way to forward to an ip address and a DIFFERENT port. I need to do this: In port Destination 9100 192.168.1.1 : 9100 9101 192.168.1.2 : 9100 9102 192.168.1.3 : 9100 So I'm looking for options. I could setup an old computer with two network cards and IPtables I suppose, but that seems like a lot of overhead for something relatively simple. Is there a way a virtual machine (read: one network card) could do the advanced port forwarding? Where I forward all traffic to it, and it forwards it on to the right printer? Or what about those mini Linux distros that replace the WRT-54G's firmware? Do any of those support what I need "out of the box"? I have a spare WRT- could I make it an IP tables router? Recommendations for mini distros? Or is there an off-the-shelf product that does this (cheap/local preferred)? Any advice / options appreciated. Thanks!

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  • sql server textbook

    - by Nick P
    I am a student that is about to take an independent study class on SQL Server management. I would like some suggestions for textbooks that could guide me. I will be expected to install and configure SQL server 2008 in a Windows Server 2008 environment and provide tools(scripts) to administer a database for future students. I've reviewed the Murach book, and it doesn't seem to go into enough depth.

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  • Reduce Windows DNS Service caching on Window

    - by Nick G
    I'm struggling with DNS caching issues on a Windows based LAN. I've noticed that if I change a DNS record on a domain hosted by a 3rd party nameserver, that I always seem to be the very last person to see the change happen. I can often query the domain using a service which checks propagation around the world like www.whatsmydns.net but I usually find that all other DNS servers are correct and it's only my own server which has the old IP - even 8-12 hours later. This is an issue for us as we're website developers and often making changes to DNS records so these huge delays are frustrating. It seems to be because our primary domain controller server (+Active Directory & DNS) on our LAN (which is also our local DNS server) caches records for AGES (Way beyond it's published TTL). How can I stop the Windows DNS server from caching, or reduce the caching to only an hour or so?

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  • Use Seagate hard drive for both mac and windows

    - by Nick LaMarca
    I recently bought a seagate for mac 1tb external hard drive. When I connect to my macbook through the fire wire it works fine, but I also have media on my dell laptop which is running vista. When I connect the hard drive to that laptop using the usb cable vista doesnt recognize it. What am I doing wrong?

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  • Use Seagate hard drive for both mac and windows

    - by Nick LaMarca
    I recently bought a seagate for mac 1tb external hard drive. When I connect to my macbook through the fire wire it works fine, but I also have media on my dell laptop which is running vista. When I connect the hard drive to that laptop using the usb cable vista doesnt recognize it. What am I doing wrong?

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  • simple apache2 reverse proxy setup not working

    - by Nick
    I know what proxy is (very high level), it's just I have never set up one, and it feels like I might be missing some big fat point here. My setup: client server (static IP), runs apache on port 80 proxy (has 2 network cards, one is on the clients network, the other one with a static IP on the server network), runs apache on port 80 I am trying to configure these three machines so that when client requests: http://proxy/machine1 It gets served server's pages at server root URL, i.e. http://server/ I can access client pages just fine. However, when I try accessing a page from the client machine, it simply gets redirected to server's IP address, which it clearly can't access since they are not on the same network: ... <meta http-equiv="REFRESH" content="0;url=http://server/machine1"></meta> <title>Redirect</title> ... My apache2 config is: LoadModule proxy_module /modules/mod_proxy.so LoadModule proxy_http_module /modules/mod_proxy_http.so ProxyRequests off <Proxy *> Order Allow,Deny Allow from all </Proxy> ProxyPass /machine1 http://server:80 <Location /machine1> ProxyPassReverse / </Location> What gives? Thanks!

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  • Chef Knife-Windows

    - by Nick Zagoreos
    I'm trying to bootstrap a windows 2008 R2 Server with chef and i'm receiving this error :"CScript Error: Execution of the Windows Script Host failed. (0x800A0007)". After some research i find out that i must install the "specific_install" gem and use Knife-windows gem from git but when i'm trying to install gem with this command "gem specific_install -l https://github.com/opscode/knife-windows.git" i'm receiving the following error : "ERROR: While executing gem ... (NoMethodError) undefined method `build' for Gem::Package:Module" What am i doing wrog? Thank you in advance

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  • Prevent outgoing traffic unless OpenVPN connection is active using pf.conf on Mac OS X

    - by Nick
    I've been able to deny all connections to external networks unless my OpenVPN connection is active using pf.conf. However, I lose Wi-Fi connectivity if the connection is broken by closing and opening the laptop lid or toggling Wi-Fi off and on again. I'm on Mac OS 10.8.1. I connect to the Web via Wi-Fi (from varying locations, including Internet cafés). The OpenVPN connection is set up with Viscosity. I have the following packet filter rules set up in /etc/pf.conf # Deny all packets unless they pass through the OpenVPN connection wifi=en1 vpn=tun0 block all set skip on lo pass on $wifi proto udp to [OpenVPN server IP address] port 443 pass on $vpn I start the packet filter service with sudo pfctl -e and load the new rules with sudo pfctl -f /etc/pf.conf. I have also edited /System/Library/LaunchDaemons/com.apple.pfctl.plist and changed the line <string>-f</string> to read <string>-ef</string> so that the packet filter launches at system startup. This all seems to works great at first: applications can only connect to the web if the OpenVPN connection is active, so I'm never leaking data over an insecure connection. But, if I close and reopen my laptop lid or turn Wi-Fi off and on again, the Wi-Fi connection is lost, and I see an exclamation mark in the Wi-Fi icon in the status bar. Clicking the Wi-Fi icon shows an "Alert: No Internet connection" message: To regain the connection, I have to disconnect and reconnect Wi-Fi, sometimes five or six times, before the "Alert: No Internet connection" message disappears and I'm able to open the VPN connection again. Other times, the Wi-Fi alert disappears of its own accord, the exclamation mark clears, and I'm able to connect again. Either way, it can take five minutes or more to get a connection again, which can be frustrating. Why does Wi-Fi report "No internet connection" after losing connectivity, and how can I diagnose this issue and fix it?

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