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  • Fill a table from a RAND based formula in Excel 2010

    - by Greg Reynolds
    I am trying to do a Monte Carlo simulation using Excel, but a lot of the tutorials I have found are either for older versions of the product, or are not quite what I am after. A simple example of the kind of think I am after is: Cell A1 contains the formula to simulate (for example int(6*rand())+1 to simulate rolling a dice). I have 10 rows of "Trials". What I want is to somehow point each row at a different calculation of the formula in A1. So I would end up with something like Trial Value 1 2 2 5 3 6 4 2 5 1 6 3 7 2 8 4 9 2 10 1 I have tried playing with some of the "What-if Analysis" tools, but I am a bit lost.

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  • Debian 5 is randomly shutting down.

    - by revofreak
    My debian 5 vps is suffering from random shutdowns. I reinstalled it several times, the hosts moved me to a different physical box, check the install image and said everyone else also uses it and is fine. Heres the output from syslog Mar 27 00:19:19 noobintraining-1 -- MARK -- Mar 27 00:32:01 noobintraining-1 shutdown[18142]: shutting down for system halt Mar 27 00:32:06 noobintraining-1 init: Switching to runlevel: 0 Mar 27 00:32:06 noobintraining-1 xinetd[15907]: Exiting... Mar 27 00:32:07 noobintraining-1 named[15865]: received control channel command 'stop -p' Mar 27 00:32:07 noobintraining-1 named[15865]: shutting down: flushing changes Mar 27 00:32:07 noobintraining-1 named[15865]: stopping command channel on 127.0.0.1#953 Mar 27 00:32:07 noobintraining-1 named[15865]: stopping command channel on ::1#953 Mar 27 00:32:07 noobintraining-1 named[15865]: no longer listening on ::#53 Mar 27 00:32:07 noobintraining-1 named[15865]: no longer listening on 127.0.0.1#53 Mar 27 00:32:07 noobintraining-1 named[15865]: no longer listening on 89.238.172.132#53 Mar 27 00:32:07 noobintraining-1 named[15865]: exiting Mar 27 00:32:07 noobintraining-1 exiting on signal 15 Any help is most appreciated!

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  • Determining Namespaces Not in the ACPI Spec

    - by Eddie B
    I am trying to determine how it may be possible to find documentation for namespaces that are not documented in the ACPI spec. I have an Asus uEFI BIOS v(3202) and I'm receiving kernel messages stating AE Namespace lookup failures for DSSP. This is referring to a namespace that is not in the ACPI spec. I'm presuming that this is vendor specific and refers to a Digital Sensor Signal Processor. That is only a presumption. In an effort to correct ACPI errors I have dumped my DSDT using acpidump and then decompiled it using iASL. Yet to fix the error I need to know the spec on the namespace. How can I get access to the BIOS documentation that isn't part of the ACPI spec?

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  • Public IP shows strange characters and Facebook registers logged-in session to a different location

    - by Stuart Kershaw
    I'm encountering some IP strangeness today and hoping to find an explanation. In short, I'm based in Seattle, WA with my ISP being Comcast. While browsing Facebook's account settings, I noticed that my active session was located to Mount Laurel, NJ. At that point I ran a search in Google for 'my public IP', which returned an interesting result: a string of characters in the following format: 2601:8:b000:xxx:xxxx:xxxx:xxxx:xxxx Normally, a search for my IP returns something like: 67.xxx.xx.xxx A phone call to Comcast got me nowhere, but using Comcast's phone-menu debugging tools, I was able to send a 'refresh signal' to my modem. After that, the search for 'my public IP' yielded the expected result... for about 5 minutes, and then it returned to the new string of characters. Does anyone know of an explanation for this?

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  • Why does my wifi fail to stay connected?

    - by Mark0978
    We have 5 different laptops in the house, 1 macbook, 1 Compaq, 3 dells, plus numerous little devices like ipods, squeezeboxs, squeezebox radios and controllers, you name it. All of them connect to and stay connected to the "downstairs" WIFI just fine. But my laptop (the most expensive of the lot) refuses to stay connected, preferring the much weaker and slower signal upstairs. My laptop is running Win7 (64 bit) Ultimate with an Intel 3945ABG WIFI contoller (It's a Dell Precision M6300). The WIFI Access Point is a Cisco WRT54G2 V1 with firmware: Firmware: DD-WRT v24-sp2 (10/10/09) micro Time: 11:11:10 up 42 min, load average: 0.06, 0.01, 0.00 WAN: Disabled

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  • Ubuntu 9.04 Cannot Connect to visible open wifi ap (reason 6)

    - by Andrew Bolster
    I'm travelling currently so the last network i connected successfully to was my home wpa-psk network. I hadn't tried anything until i got to my accommodation that is an open network (that I'm on now on the Win7 partition on my laptop). The network (and a similar archetypical 'linksys' open network, aswell as some protected local networks are correctly displayed in network-manager and upon selection, it happily spins around to its hearts content for a while before saying 'no chance boy'. /var/log/syslog spills out the usual combination of wpa_supplicant and kernel messages, the most interesting of are that the kernel deauthentication reason 6 response. 6 apparently means class2FrameFromNonAuthStation...Client attempted to transfer data before it was authenticated. Anyone seen anything like this? I've already tried going closer to the router to no avail. I don't remember seeing this any other time I've connected to a open AP, even if that AP is far away. (Signal strength for this AP is good, kismet says its around -57dBm, well above the threshold of -80dBm, and I've tried all the suggestions from the 'Related Questions'

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  • Can I set up a 2nd home wireless router, with router2 connecting to the internet through a desktop which is wirelessly connected to router1?

    - by gil b.
    Hi, I apologize for the crudeness of my MSPaint drawing, but please view my diagram of what I'd like to accomplish: Proposed home network architecture Currently, all devices are connected to 1 wireless router. I would like to make my own subnet, with a box in-between my subnet and the shared wireless router, so that I can learn about IDS, traffic analysis, etc. I was also given a cisco PIX firewall to play around with, and it'd be an added bonus if I could incorporate that into my network. The reason for this proposed architecture is so that I can monitor all MY traffic, without seeing anything going on with my roommates' traffic. my MAIN Question is, is it possible to have my desktop connect to the wireless router with internet via wireless card AND share that connection via the ethernet card, hooked to wireless router 2? cable modem - wireless router - desktop pc connected wirelessly - wireless router 2 getting internet from wired connection to desktop pc - laptops connected wirelessly The PIX can be left out for now, but I'm wondering if it could eventually be incorporated? THANKS!

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  • Configuration of Home Network

    - by Wen Jie
    Previously my home network is as follows Speedtouch ST536 -> Linksys WRT54G But now as I have upgraded my internet subscription. My service provider gave me a "2Wire 2701 HGV" modem. I was wondering if it is possible to put the "2Wire" as an access point. So I might have a configuration as follows? Room Living Room Speedtouch ST536 -> Linksys WRT54G {Wireless} 2Wire 2701 HGV Because I find that my signal is very weak. Is there any way for me to do that?

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  • Network email alerts

    - by stephenfalken
    I would like to buy or d/l an application that will alert our sysadmin in the event of network failure, like via email and/or phone call. I've looked around the net before posting this question, but I have one main concern: if our network goes down, how can a network monitoring application send email to alert us that it's down? Doesn't this have to be an external application that looks at our network from outside? Well anyway, I want to find something that will handle this for us - freeware if possible, sice we're not looking for heavy analysis - just simple alerts. Advice is appreciated.

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  • wireless repeater vs wireless bridge?

    - by Kossel
    Scenario: I have a ADSL modem inside the studio which is connected with some wired/wireless devices. but when I'm in the backyard with my laptop the wireless signal is very poor, so the connection is very unstable. I have an old belkin wireless router and I read that it can be useful in this scenario. after some search, it's compatible with DD-WRT, and seems setting it both wireless repeater or wireless bridge can do the job. but which is better for speed and stability or for my purpose they are the same? wireless repeater wireless bridge

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  • How to identify cause of system lock on debian squeeze?

    - by David Sanders
    I have a desktop system at work with debian squeeze installed. Every couple days or so, when I come in in the morning, the system appears to be asleep and won't wake up. I suspect it goes into power save mode and then doesn't receive the wake up signal when I click the mouse or touch the keyboard. Does anyone know where I should look in order to start tracking this down? Like log files, etc? I doubt it, but maybe the fact that I'm using a mac aluminum usb keyboard and a wireless usb mouse (that has an off switch) has something to do with it? Maybe, when I turn my mouse off at the end of the day, the system loses track of the device somehow? I dunno :P. Thanks in advance.

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  • RJ45 female to male fault

    - by GeoPhoenix
    i have the following - common - problem, on one end of the cable, there are RJ45 males T586 A which are connected to a 8-port switcher, on the other end, there supposed to be RJ45 females _T586 A which in turn will allow another RJ45 male to be connected. the commonly used color scheme was followed on males (having the head down) blue white blue orange white green green white orange brown white brown the problem i believe is located on female end of cable, which i try multiple time to follow the numbers designated by the module, which is the list above in reverse, and as listed resulting in no signal transmission. tried the T586B (both ends) for device to device once, but no results. Which is the proper way of handling this wiring? There were also additional RJ45 females with the numbers 6-5-4-3, but 1 to 8 isn't supposed to be used for this?

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  • Dynamic VPN tunneling technologies

    - by Adam
    Ok, so I'm asking a more specific question this time. I'm writing a paper about Cisco's DMVPN and one of the tasks I have is to make the analysis of available network solutions which use dynamic VPN tunnels. Because the paper is about DMVPN, I have to compare those solutions to it. I know there are a lot of dynamic tunneling technologies but I'm looking for ones that can be compared to DMVPN. So the question is: are there any technologies which use dynamic VPN tunnels (not necessarily using crypto) that can be compared to DMVPN? What are those technologies?

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  • A design for watching IPTV anywhere in the house?

    - by Carlos
    I'm currently getting TV and internet via IP to my house. The service comes into an ISP-supplied Router (ST585) which is in turn connected to an IPTV box. I need to replace the router, as it's port forwarding seems to be broken, so I was thinking of getting a box with an IGMP proxy. I once mistakenly got a non-IGMP box, with the result that the internet worked, but the IPTV didn't. The trouble is, I have no idea how to set up the IPTV part of the installation. I do have a copy of the ST585 configuration, but it doesn't look anything like the Cisco stuff that I learned about at CCNA. What are the steps necessary to reproduce the IGMP setup? I was thinking of WireSharking the communications on the network, but I suppose I'd need a hub for that? As a bonus, since the packets are coming in with the TV signal, is it possible to mess with the IGMP setup so I can watch TV anywhere in the house?

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  • A design for watching IPTV anywhere in the house?

    - by Carlos
    I'm currently getting TV and internet via IP to my house. The service comes into an ISP-supplied Router (ST585) which is in turn connected to an IPTV box. I need to replace the router, as it's port forwarding seems to be broken, so I was thinking of getting a box with an IGMP proxy. I once mistakenly got a non-IGMP box, with the result that the internet worked, but the IPTV didn't. The trouble is, I have no idea how to set up the IPTV part of the installation. I do have a copy of the ST585 configuration, but it doesn't look anything like the Cisco stuff that I learned about at CCNA. What are the steps necessary to reproduce the IGMP setup? I was thinking of WireSharking the communications on the network, but I suppose I'd need a hub for that? As a bonus, since the packets are coming in with the TV signal, is it possible to mess with the IGMP setup so I can watch TV anywhere in the house?

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  • TV video constantly skips 1/2 second, plays 1 second; green on bottom

    - by Robert
    I just got DirecTV. It worked for a day, but now the TV video constantly skips 1/2 second, then plays 1 second. Also, the bottom 5th of the screen is solid green. The audio does not skip. I tried to do "Set up TV signal" (in Media Center) - but I get an error. See the post I just made here titled "Error - “IR Hardware not detected” - but it’s installed/working." Thanks for your help.

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  • Need Help Debugging BSOD

    - by nmuntz
    For the last few days I've been getting a BSOD at least once a day. Apparently the crash has been caused by ntkrpamp.exe and searching on google has revealed that the issue seems to be related to bad RAM. I have run memtest and my RAM modules have no errors on them. I'm pretty sure the issue is related to drivers, but I can't figure out which one. I'm not an expert in interpreting the output of windbg so any pointers would be greatly appreciated. Here is my analysis with WinDbg. It was too long to paste it here. One strange thing i noticed is that my Windows XP is in Spanish (SP3) and ntkrpamp.exe copyright info seems to be in portuguese. Not sure if that could be an issue, perhaps i have the wrong ntkrpamp.exe... Thanks a lot in advance

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  • how to troubleshoot shutdown problems in windows 7

    - by Ieyasu Sawada
    I have a desktop with windows 7 ultimate installed. Whenever I shut it down from the start button. The text that says that it is logging off and shutting down is present and the monitor blacks out and says no signal. But the lights in the RAM is still on and all the fans in the desktop is still spinning. Why is that? It seems like its not shutting down completely. I have also got disk problems lately. Event id 175 and 50. Which I think is caused by the computer not shutting down completely. How do I troubleshoot this one? Feel free to ask if you need more details, thanks.

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  • How to set up Asus RT-N66U in bridge mode with wired connection to main router?

    - by Milligan
    I have a wired router (TP-Link RT-860) in the basement where the cable service comes in. Eight wired ethernet connections span two buildings. I currently have a Linksys wireless router set up in bridge mode, but its signal doesn't span the whole area. I have purchased an Asus RT-N66U to replace it, but I can't figure out how to set it up in bridge mode. Does anyone know if this is possible? Second question: Would there be any advantage in installing DD-WRT on the Asus?

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  • Second monitor not detected

    - by Gabriel
    Hi I have two VGA monitors, my GPU is ATI PowerColor 6850 which has two DVI slots, I use adapters for both VGA monitors. If I connect any the two monitors in the first slot it will work right away (along the plugin confirmation sound). And if I connect any of both monitors to the second slot I won't get anything, nor a signal or confirmation sound. I also tried auto detecting via Catalyst Control Center and Windows Desktop Resolution. I have the latest drivers installed. EDIT: I found this on the Spec Description: Display Connectors DL-DVI-I/SL-DVI-D And in NewEgg: 2 x DVI (1 Single Link, 1 Dual Link) Could this have anything to do with my issue?

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  • Apple Airport Extreme Wireless Card M8881 Connectivity Issue

    - by Carlosfocker
    I bought a Apple Airport Extreme Wireless Card M8881 with the antenna for my old Power Mac G5 1.6 Ghz. The computer is running OS X 10.4. The card works and I can connect to my dlink 802.11g wireless router using WPA2/AES encryption. The problem is that the connection has intermittent connectivity issues. When the issue occurs the signal bars for the connection drop to one or two bars and the performance of the connection suffers greatly. The computer isn't far from the wireless router. I have a laptop at the desk where the mac is and it does not have any issues. I'm not sure what it might be? Updated drivers? Firmware? Let me know if I forgot any important information.

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  • Real-time threat finder

    - by Rohit
    I want to make a small program that is capable to download files from the cloud onto my system. As the file reaches my system, another program on my system will analyze the file and try to find suspicious behaviors in it. I want to make a system similar to ThreatExpert (www.threatexpert.com). The suspicious data gathered by my program will be sent to Anti-Virus companies for analysis. I want to know whether this program can be written in .NET or as a PHP website. I have no experience of Cloud computing. How to retrieve files from the cloud?

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  • Trouble with external monitor under Windows 7 on MacBook Pro Boot Camp

    - by Colm
    I'm running Windows 7 32-bit on a mid-2010 15" MacBook Pro Intel Core i5 under Boot Camp. I've had trouble getting it to work with my second display and searching Google for an appropriate answer has failed me. I'm on the latest version of Boot Camp - 3.2 - and have updated the drivers for the NVIDIA GeForce GT 330M. The monitor is connected via a VGA cable, and is a Dell ST2410. The monitor is recognised by Windows, which knows it's a Dell and its resolution. The desktop should be extended onto the second monitor - however nothing is showing. It remains black, though it doesn't show a lack of signal coming through which I would have expected. Any ideas what's wrong?

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  • MSSQL: Choice of service accounts

    - by Troels Arvin
    When installing MS SQL Server 2008, one needs to associate a service account with the installation (possibly even several accounts, one for the SQL Server Agent, one for Analysis Services, ..., but let's leave that for the case of simplicity). The service account may be local account, or a Windows domain account. If a domain account is used: Can MSSQL start, if connectivity to the domain controllers is temporarily down? If the answer is yes: Should each DBMS instance on each server have a separate account, or does it make sense to use a particular "MSSQL" domain account on all MSSQL-installations in the organization? If separate accounts are used for each instance on each server: Does it make sense to create a special MSSQL security group in the domain and place all the MSSQL service accounts in that group, perhaps to ease replication, etc? Is there a common, generally accepted naming convention for MSSQL service account(s)?

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  • Have to reset wireless frequently on iPad / Macs connected to Cisco WRV200

    - by retailevolved
    I have a Cisco WRV200 set up in our small office. The wireless signal works great for PCs, but I have found that Macs and iPads have to frequently reset the connection. It will be working for about 10 minutes, then stop. To fix it, I just turn off Airport and turn it on again. On an iPad, I have to go into settings, shut the wireless off, and then turn it on again. The router is broadcasting mixed B/G on channel 6. Security is WPA-PSK2. Anybody out there had similar issues with their router? How can I fix it?

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