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• How to configure networking on an appliance such that it can plug and play on any corporate network?

  - by Joshua Lim

  I had a chance to configure a Moxa NPort device server appliance on my client's network, it was very easy to do so, done in just 2 minutes. Here's what I did:- The Moxa device server had a preset IP address of 192.168.127.254 and subnet mask 255.255.255.0 - http://www.moxa.com/doc/manual/nport/5400/NPort_5400_Series_Users_Manual_v4.pdf Moxa provides a Windows software which I used to "scan" for the device server. It worked like magic! The software returns a list of device servers found. Each device server is identified by MAC address, and by selecting the device server using the software, I can reset the default IP address and subnet mask of that device server! In comparison, during an earlier project, I spent 2 hours trying to get KVM to work for a Windows 7 embedded appliance I'm trying to install in my client's network - http://superuser.com/questions/380305/how-to-configure-windows-7-professional-appliance-pc-on-my-clients-network-usin Prior to that, I have already tried pre-configuring the IP address and subnet mask to the one which my client provided, yet the appliance still can't connect to the client's network! I've also tried cross cable, didn't work either. After KVM worked, I discovered that the network settings were "lost" after I plug the machine into the client's network. Now my question is what can I do to setup my Windows 7 embedded appliance so that it can connect to any network like that the Moxa device server? I tried experimenting this on my network using a Windows machine configured to an IP address of 192.168.127.254 and subnet mask 255.255.255.0, but it doesn't connect to my network that uses 192.168.0.*. :( EDIT: I would like to point out that the Moxa Windows configuration software seems to be able to connect to any Moxa device connected to the network even if it is on a different subnet, as long as the network adapter shows "connected". This is important because the Moxa device has no VGSM port or interface to configure the IP address.

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• Visual Studio 2010 Beta 2, built-in font smoothing

  - by L. Shaydariv

  I've just installed Visual Studio 2010 Beta 2 onto my Windows XP to evaluate it and check whether it meets my preferences the way it did before. Okay, I've temporary defeated an urgent bug with a strange workaround (I could not open any file from the Solution Explorer), and it left bad memories to me. But however, it's okay. The first thing I've seen just opening the code editor was ClearType font rendering. Wow, so unexpectedly. I must note that I do not use standard Windows rendering techniques, but I still prefer GDI++, a font renderer developed by Japanese developers. (GDI++ allows to render the fonts in Mac/Win-Safari style over entire Windows.) Personally for me, GDI++ reaches the great font-rendering results allowing me to use the Dejavu Sans Mono font with really nice smoothing in Visual Studio 2008 (VS 2005 too, though VS 2005 crashes in this case). But GDI++ cannot affect Visual Studio 2010 Beta 2 text editor - it uses ClearType (right?), and it does not care about the system font smoothing settings. It could be an editor based on WPF, right? So as far as I can see, I can't use GDI++ anymore because it uses Windows GDI(+) but no WPF? So I've got several questions: Is it possible to disable VS 2010 b2 built-in ClearType or override it with another font smoother? Is it possible to install a Safari-like font renderer for Visual Studio 2010 [betas]? Thanks a lot.

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• Domain Controller DNS Best Practice/Practical Considerations for Domain Controllers in Child Domains

  - by joeqwerty

  I'm setting up several child domains in an existing Active Directory forest and I'm looking for some conventional wisdom/best practice guidance for configuring both DNS client settings on the child domain controllers and for the DNS zone replication scope. Assuming a single domain controller in each domain and assuming that each DC is also the DNS server for the domain (for simplicity's sake) should the child domain controller point to itself for DNS only or should it point to some combination (primary VS. secondary) of itself and the DNS server in the parent or root domain? If a parentchildgrandchild domain hierarchy exists (with a contiguous DNS namespace) how should DNS be configured on the grandchild DC? Regarding the DNS zone replication scope, if storing each domain's DNS zone on all DNS servers in the domain then I'm assuming a DNS delegation from the parent to the child needs to exist and that a forwarder from the child to the parent needs to exist. With a parentchildgrandchild domain hierarchy then does each child forward to the direct parent for the direct parent's zone or to the root zone? Does the delegation occur at the direct parent zone or from the root zone? If storing all DNS zones on all DNS servers in the forest does it make the above questions regarding the replication scope moot? Does the replication scope have some bearing on the DNS client settings on each DC?

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• when should be choose simple php mail and when smpt with loggin+password?

  - by user43353

  Hi, My Case: web application that need to send 1,000 messages per day to main gmail account. (Only need to send email, not need receive emails - email client) 1. option - use php mail function + sendmail + config php.ini php example: <?php $to = '[email protected]'; $subject = 'the subject'; $message = 'hello'; $headers = 'From: [email protected]' . "\r\n" . 'Reply-To: [email protected]' . "\r\n" . 'X-Mailer: PHP/' . phpversion(); mail($to, $subject, $message, $headers); ?> php.ini config (ubuntu): sendmail_path = /usr/sbin/sendmail -t -i pros:don't need email account, easy to setup cons:? 2. option - use Zend_Mail + transport on smpt+ password auto php example(need include Zend_Mail classes): $config = array('auth' => 'login', 'username' => 'myusername', 'password' => 'password'); $transport = new Zend_Mail_Transport_Smtp('mail.server.com', $config); $mail = new Zend_Mail(); $mail->setBodyText('This is the text of the mail.'); $mail->setFrom('[email protected]', 'Some Sender'); $mail->addTo('[email protected]', 'Some Recipient'); $mail->setSubject('TestSubject'); $mail->send($transport); pros:? cons:? Questions: Can 1 option be filtered by gmail email server as spam? please can you add pros + cons to options above Thanks

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• Overriding vhost.conf to always allow PHP include access to directory

  - by Jeremy Dentel

  My predecessor in my job developed a simplistic newsletter system for our school's newspaper utilizing PEAR's Mail package. As I grow this system (and our site) we are constantly stuck with Plesk rewriting the vhost.conf file in which the PEAR include path has been manually entered. This has become an unwieldy task to actually manage and keep running. There's been a "note" from both the previous developer and I to attempt to solve this problem, but we can't entirely figure it out. I'm attempting a move to cPanel through another host, so hopefully it'll go away there, but until then, it can be tedious extremely difficult to get a solid uptake of the system without constant "web-presence." I've searched around and haven't found a solution. I'm rather new to the server management scene (command line was non-existant till around a year ago. =/), so I haven't found anything. Any help would be useful. "Similar Questions" popped this up, but it still seems to rely on vhost.conf, and will still allow changes within Plesk to overwrite the changes.

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• Windows XP Boot Issue - Diagnosing A Hard Drive Failure

  - by duffymo

  My five-year-old HP desktop running Windows XP SP3 wouldn't boot from the hard drive yesterday afternoon. I would see the boot sequence begin, then nothing but a black screen. Fortunately, I had just done an Acronis backup to my external drive in the morning, and I have a bootable USB key. I put the USB key into the drive, powered up the machine, and put the USB key first in line in the boot sequence. Voila! My machine came alive. But now I'm confused as to what the problem is and what to do next. I assumed that my hard drive was toast. But now that the machine is alive I can see files on my C: drive that have changes I made just yesterday. Clearly the drive is not dead. Here are my questions: What could explain my inability to boot from the hard drive? What would a remedy be? What's my best course of action? Should I replace the hard drive with a new one? If I replace the hard drive, do I reinstall the OS and apply the backup I did yesterday? If I decide that re-installing Windows XP makes no sense, how do I get back the Acronis backup that I did yesterday? I don't want to lose that. UPDATE: I just learned one more key fact. I'm having some work done on my house. I neglected to shut my machine down before the contractor came. My wife said he shut down the power to do some work on a circuit and then powered the house back up. I have a surge protector, but is it possible that cycling the power did some damage?

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• Is there a way to avoid Wacom Control Panel to stop showing in certain cases?

  - by S.gfx

  This is the problem: Suddenly, you double click on desktop Wacom tablet settings icon, and it won't show the dialog. It appears to be loaded as it's shown down in the Windows taskbar. I suspect it is caused by change of resolution or some setting, maybe suddenly it sets the origin of the panel dialog at some 3000 pixels to the right or something. I have dug in the wacom_tablet.dat file to see if I can fix it changing some value there, but it looks like a log, a history, more than a ini for settings. And anyway does not solve it. My solution is having always a very complete settings file done and backed up to restore (with Wacom utility for this, which in previous driver versions did not exist) when this happens, but it is counter-productive: You change the settings even per each project (and software) needs. I have seen it happenning with Cintiq 12", intuos4 A6, Graphires, Intuos 1. Is it just me, doing something weird every time? I doubt it, it's normal use, I am amazed that it seems no one else has had this problem (or nobody asked). It happens often with typical use. Maybe it's because I'm setting a shortcut in the desktop? Weird as it works perfect until some random moment. (I have dug in Wacom's forums and FAQs, then here, but nothing related to it. Neither in "related questions".) The thing happens in Win XP, 7, etc. It's done so for years in my experience, and several times at work, which is worse.

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• Problem with mydomain.com no prefix

  - by user10711

  Short question is. I have a domain name mydomain.com, we have a company website hosted on an IIS server 2003 configuration. Going to the address bar and typing www.mydomain.com will show my website properly. Typing mydomain.com into the same address bar will return an under construction website that seems to be hosted on my webserver. My domain name is hosted by Network Solutions, and I think I have it configured correctly using their advanced DNS services. In their settings I have www.mydomain.com, * and @ also pointed to the ip address of my webserver. On my webserver itself using the IIS manager, under the Web Site, and Web Site Identification. I have configured both www.mydomain.com and mydomain.com configured to work on the IP address on the webserver. I am hosting 4 different websites on my IIS server, all the other sites use prefixes other than www, an example is mail.mydomain.com and a couple of others. None of them show an under construction page as their default homepage. I am really at a loss as to why it would show an under construction page, especially since it seems to be pointing to the correct server. The reason this is such a big deal is because when you search for my company on google, the link there is for mydomain.com and by clicking on the link it shows under construction which is really quite embarrassing. Thanks in advance for any help and if there are further questions let me know.

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• Some free cloud solution to enhance your business

  - by Saif Bechan

  I am co-owner of a small internet business. I am in charge of IT, and I try to get things done as low cost as possible. When investing in servers, resources and overall business costs your project can soon turn into a financial disaster. Cloud solutions can help you in solving some financial problems, they can help you in scalability problems, and overall performance problems of your server or web application. Recently I moved the whole internal/external communication(email,calendar,documents) of my business to the cloud. I did this by using the free version of Google Apps. This works great and is a big advantage on multiple levels. I do not have to fight spam anymore on my system, and there are less resources used on my system. Also switching servers will go a lot easier. Questions Can you name some cloud solution that you have used, or some you just recommend. They can fairy form financial benefits, organizational benefits, performance benefits. It doesn't matter as soon as it helps you spread the load of your business.

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• Redis as substitution for Memcache

  - by Boban P.

  We have distributed web app, and for now, as session handler, we use two separate instances of memcache in redundancy, so everything that is written in one memcache is also written in other. Memcache is fairly easy to install, use, and maintain but we have one problem: if one memcache fail, everything is fine, php comunicate with other instance which has all data (although, half of connections have a delay because they try to use failed one, wait a little, and then contact other memcache). When failed instance comes back to life again, it starts up empty. If established session request data from that instance, session fails, and user logs out, and that happens to half of users.So, we are thinking about to switch to redis for session handling, and maybe keep memcache for cache only. My questions are: If we setup redis instances as master-slave, and if master fails, can sentinel promote slave as new master and when old master comes back to life, will it stay as slave or not? Is redis call malloc at startup to allocate part of memory, like memcache or varnish, or it calls malloc for every key inserted? And what are pros and cons of that?

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• Jenkins CI - Cannot allocate memory

  - by Programmieraffe

  I tested jenkins-ci successfully on a ubuntu 10.4 (with vmware fusion) on my local computer. Now I want to install and use it on my virtual server at hosteurope. The basic installation was no problem, but now I have problems with my build project. After pulling an mercurial update from a repository, ant is invoked and throws the following error in my build project: "Buildfile: /var/lib/jenkins/workspace/concrete5-seed-clean/build.xml [property] java.io.IOException: Cannot run program "/usr/bin/env": java.io.IOException: error=12, Cannot allocate memory" There is a known problem with heap size at virtual servers at hosteurope (http://faq.hosteurope.de/index.php?cpid=13918), so I tried to set the heap size manually: # for ant export ANT_OPTS="-Xms512m -Xmx512m" # jenkins # edited /etc/default/jenkins, added line JAVA_ARGS="-Xms512m -Xmx512m" # restarted jenkins via /etc/init.d/jenkins restart After setting this for ant, the command "ant -diagnostics" runs through and does not cause an error, but the error still occurs when I try to build the project. Server-Details: - http://www.hosteurope.de/produkt/Virtual-Server-Linux-L Ubuntu 10.4 LTS RAM: 1GB / Dynamic 2GB My questions: - Is 1GB enough for Jenkins or do I have to upgrade the server? - Is this error caused by ant or jenkins? Update: I got it running with ant options -Xmx128m -Xms128m, but sometimes the error occurs again. (this freaks me out, cause i can not reproduce it by now :/ ) Help much appreciated! Cheers, Matthias

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• DNS Round-robin, Load Balancing, Load sharing, and failover in 2012

  - by user1089770

  I have been reading many posts on serverfault as well as on other sites regarding all these. What I understand is, Multiple A records(round-robin dns) can be used for both : Load sharing (round-robin, but NOT load-balancing). Many people say that “Load Balancing” but I think there will be no load-balancing because “Balance” means (literally) “compare two(or more) and adjust” (and that is what Real s/w or h/w Load balancers do) but Browsers never do this, instead they randomly select and IP and connect to it. It doesn't have any knowledge about the current load of that server (probably, the IP it picked had the highest load!). Automatic failover (latest browsers only). Yes, I think DNS can be used as a simple failover system (at least in 2012, I dont know when it actually "came in effect"). please refer to : http://webmasters.stackexchange.com/questions/10927/using-multiple-a-records-for-my-domain-do-web-browsers-ever-try-more-than-one and Browser-based DNS failover using multiple A records and http://www.nber.org/sys-admin/dns-failover.html I would like to make sure my assumptions/findings are right. So let me know please.....

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• Excel chart with year-to-year comparison

  - by Craig

  Given this data: Date Year Month Usage (Kw-h) Cost/Month 02/19/08 2008 2 501 59.13 03/18/08 2008 3 404 48.49 04/16/08 2008 4 387 45.67 05/22/08 2008 5 319 37.85 06/23/08 2008 6 363 43.81 07/23/08 2008 7 372 48.86 08/21/08 2008 8 435 59.74 09/23/08 2008 9 358 49.9 10/16/08 2008 10 313 42.01 11/20/08 2008 11 328 39.99 12/16/08 2008 12 374 44.7 01/20/09 2009 1 474 55.35 02/19/09 2009 2 444 52.85 03/19/09 2009 3 398 49.25 04/17/09 2009 4 403 51.05 05/19/09 2009 5 405 49.61 06/18/09 2009 6 373 45.18 07/20/09 2009 7 337 44.67 08/18/09 2009 8 369 50.73 09/17/09 2009 9 377 52.36 10/16/09 2009 10 309 43.4 11/17/09 2009 11 249 34.14 12/16/09 2009 12 327 41.79 01/20/10 2010 1 356 45.66 I would like to produce a report that displays a Usage (Kw-h) line for each year. Features: Y axis: Usage (Kw-h) X axis: Month Line 0..n: lines representing each year's monthly Usage (Kw-h) Bonus points: instead of a line for each year, each month would have a high-low-close (HLC) bar; 'close' would be replaced by the average second Y axis and HLC bar that represents cost/month Questions: Can this be done without a Pivot table? Do I need to have the Year and Month column or can Excel automatically determine this? Current chart:

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• Triple-monitor set-up (2 unique, 1 cloned): Can a VGA splitter be used on one output of a dual-head

  - by stakx

  Background: I'm currently researching hardware components for some kind of information terminal we're building. This application of ours makes use of three output screens: (1) A touch screen where all user input is made; (2) A regular LCD monitor where the requested information is being displayed; and (3) A projector which displays exactly the same signal as screen (2) does. (All screens will run at the same resolution of 1024x768 btw.) Now I figured that using a dual-head video card would be sufficient, let's say a Matrox P690 low-profile PCI card. This would involve having a Y cable connected to the graphics card itself, then two DVI-to-VGA adapters at each end of the Y cable, and then having a VGA splitter on one of the VGA outputs. The following shows the setup in question: 0--1---------2-> VGA (DSUB-15) \ \ ----2-3---------> VGA (DSUB-15) \ \ -----------------> VGA (DSUB-15) 0: graphics card (LFH60 jack) 1: LFH60 to DVI-I dual monitor Y cable 2: DVI-to-VGA adapters 3: VGA splitter cable Question(s): Will this work? I'm particularly concerned about the following points: Can a low-profile PCI video card output a signal which is strong enough for three monitors (even if it's a dual-head card)? Does the combination of so many adapters and splitter cables work? (The LFH-to-DVI cable comes with the video card) Will the VGA splitter cable degrade the signal on the output screen & projector significantly? (If so, would a USB-powered splitter cable remedy this problem?) I can't possibly expect anyone to answer all those questions, but any input is appreciated.

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• XP Pro freezes on welcome screen

  - by Peter B

  I have a problem that sounds much the same as http://superuser.com/questions/83101/how-to-diagnose-a-freeze-on-startup-in-windows-xp About every 2nd or 3rd boot, XP-Pro freezes on the Welcome page (the one showing the user name icons). The mouse moves the cursor OK, but clicking on an icon does nothing, and neither does any keystroke. If you press too many keys there is a beep and after that the mouse won't move the cursor anymore. The work-around is always to reboot into Safe mode and request a CHKDSK /R After this, the next boot is fine. There are no related entries in the Event log when the problem occurs. The only two entries are: "Microsoft (R) Windows (R) 5.01. 2600 Service Pack 3 Multiprocessor Free." "The Event log service was started." Update 1: Many thanks for that but I found no problems with any diagnostics I have run. But, I have managed to locate, and code round, the source of the problem - which is with whatever processing goes on behind the XP Welcome (as opposed to "classic") login screen. Unfortunately, having classic login means you don't get the useful Fast User Switching (FUS) login/switch mode. So, to retain this, my fix is: Add a Windows shutdown script (using gpedit.msc) to force "classic" mode for the first logon after next XP startup, by running: reg add "hklm\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v LogonType /t REG_DWORD /d 0 /f Add a Scheduled Task to run at User Logon that enables Welcome screen (and hence FUS) by running the same command with 1 instead of 0 after the /d flag. The task is run as a privileged user (who can run "reg add").

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• Wireless to Wireless Transfer Slow on a Linksys WRT54GL

  - by Kyle Brandt

  The Situation: When I try to transfer a file from one computer to another that are both connected via wireless on a WRT54GL (in a office) with dd-wrt firmware I often get bad speeds. In generally they average around 100 kilobytes a second. Either computer can download via wireless from the Internet at at about 2 megabytes a second. The speed is slow with the transfer of one large file. There are about 20 other wireless networks that the computers can see, so there is a lot of noise, but I don't have the equipment to really monitor the frequencies well. But that still seems pretty slow. I thought maybe it was the transmit on each card, but even when they are 5 feet away with a line of sight I still get these speeds. According to Linux both cards are operating at 54g. My Questions: Is this normal for this sort of consumer level wireless equipment? Anything I can do to improve it? why is wireless to wireless transfer slow when everything else isn't? Whats steps might I take to figure out what is happening? For example, are lots of packets not making to the access point requiring retransmissions? Above all, I want to find out what the problem actually is. This may seem odd, but at this point I am more interested in understanding what the problem is than fixing it. What I have tried: I have tried messing with lots of settings. Different channels, xmit power, G-Only, none of which has made anything any better. I've also tried upgrading to newer dd-wrt firmware version and doing a reset to wipe out the settings.

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• Wastage of resources in Virtualization

  - by Sabeen Malik

  I have asked this question on SO, but was suggested that i ask it here on SF, so here it goes. http://stackoverflow.com/questions/3010753/wastage-of-resources-in-virtualization I am not sure if this is the right place to ask the question. However i hope it is. When looking for a VPS earlier today, I was trying to understand how each container would work in the background. Keeping in mind the fact that the operating system uses most of the memory and power on a system, wouldn't having multiple operating systems in the same machine mean more wastage of resources. For instance if i was running centOS on a dedicated box and it was running lets say 20 background OS level processes. Then i go and install a virtualization platform and install 5 more centOS virtual machines in the same system which are exactly the same as the host operating system. Doesn't this mean duplication of those 20 processes 6 times? So internally the context switching is happening between 120 processes instead of 20? Further Notes: Here is an example of what i am thinking: I have a master-slave configuration for a long running, cpu + memory intensive process, which can be distributed to 4 machines. Lets say when the process runs on these 4 machines with lets say 1 Gh CPU and 1 Gig RAM, i get 400 results per hour from the cluster (assuming 100 results from one machine) . Now i get a bigger machine ( lets say 4Gh and 4 Gig RAM), have 4 virtual hosts on it with 1 Gz CPU and 1 Gig RAM. Will this configuration give me the same 4 results per hour from these 4 virtual hosts?

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• How does one make sure or even guarantee server time are sync correctly between dozens of servers across multiple datacenter on different location?

  - by forestclown

  Currently our web applications contain a logic to check if the data sent to the web server is expired or not by comparing the timestamp of the data with the date/time of the server. Everything goes will, until some dude from data center accidentally modify one of the web server date/time and causes some disruptions in our web services. My managers are of course not happy with this, and said we shouldn't use timestamp to check expiry in the first place...anyway.... Network Time Protocol is implemented, because of data centers are spread across different continents so we have one NTP server in each data center. The servers within the data center will have cron jobs to check against the time with their NTP server from the same data center. If time is out of sync it will auto update the server date/time. But then with our managers not happy with it, and think it could still easily causes the same problem. e.g. what if someone accidentally modify the NTP date/time? what if all the NTP servers are out of sync with each other? which NTP servers we can really trust? and blah blah.. So my questions are: What are the current practice to sync date/time between servers across multiple data centers or locations? How does one manages time stamp between web apps? e.g. Server A send data (contain timestamp of Server A) to Server B (compare timestamp between Server B and the timestamp from the data to see if it has expired or not. This is to avoid HTTP replay) Should we really not use timestamp check? Thanks & Best Regards

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• How to disable mod_security2 rule (false positive) for one domain on centos 5

  - by nicholas.alipaz

  Hi I have mod_security enabled on a centos5 server and one of the rules is keeping a user from posting some text on a form. The text is legitimate but it has the words 'create' and an html <table> tag later in it so it is causing a false positive. The error I am receiving is below: [Sun Apr 25 20:36:53 2010] [error] [client 76.171.171.xxx] ModSecurity: Access denied with code 500 (phase 2). Pattern match "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" at ARGS:body. [file "/usr/local/apache/conf/modsec2.user.conf"] [line "352"] [id "300015"] [rev "1"] [msg "Generic SQL injection protection"] [severity "CRITICAL"] [hostname "www.mysite.com"] [uri "/node/181/edit"] [unique_id "@TaVDEWnlusAABQv9@oAAAAD"] and here is /usr/local/apache/conf/modsec2.user.conf (line 352) #Generic SQL sigs SecRule ARGS "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" "id:1,rev:1,severity:2,msg:'Generic SQL injection protection'" The questions I have are: What should I do to "whitelist" or allow this rule to get through? What file do I create and where? How should I alter this rule? Can I set it to only be allowed for the one domain, since it is the only one having the issue on this dedicated server or is there a better way to exclude table tags perhaps? Thanks guys

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• Keyboard issue when using kitty+puttycyg but not when using putty or cygwin alone

  - by kamaradclimber

  I would like to use a unique way to use console on my windows setup. Previously I used putty for remote access to linux servers and cygwin to have unix-like tools on windows. Then I discovered kitty which is a patched putty and have added the puttycyg patch. It provides the same way to connect to remote and local console. However, there is a strange behavior using vim when connected to the local console (using the puttycyg patch) : keys display A/B/C/D and replace the current character by these letter. In insert mode it does replace the caracter, in normal mode, no modification is made to the document even if the caracter is displayed as replaced. For instance, when I type : fixed bug with product deleted I get : fixed bbug wiwith prprodudueleteted I have read a lot of questions about this type of issue 3, 4 and googled it but there is no answer that work for me. The issue is present only for the setup kitty+puttycyg patch : cygwin alone works perfectly (and putty alone works also for access to linux servers). Any help would be appreciated !

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• Relation between server_name in nginx sites-available, /etc/hosts file and A-records

  - by user2818584

  I have the following two server-blocks in my config-file in sites-available: server { listen 80; server_name www.mydomain.be; root /usr/share/nginx/html; index index.html index.htm; location / { try_files $uri $uri/ =404; } } server { listen 80; server_name sub.mydomain.be; root /usr/share/nginx/sub; index index.html index.htm; location / { try_files $uri $uri/ =404; } } I also created an A-record for both www.domain.be and sub.domain.be with the IP of my server as value. Yet, when I try to reload my nginx configuration with service nginx reload it fails. When I remove the second server-block, it reloads as expected. I know this topic is popular, and that there are loads of such [nginx][subdomain] questions here, but none of them seems to discuss explicitly how the following three things hang together: virtual hosts or server blocks in nginx (est. server_name matching) the effect of A-records on how nginx processes requests the need to add hosts to /etc/hosts Right now I have the impression that a lack of knowledge of this bigger picture, rather than specific knowledge of nginx configuration prevents me from making this work.

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• Sandra reports my CPU as "Engineering Sample", how can I be sure this is correct?

  - by stevenvh

  I ran SiSoftware's Sandra on my new PC, and for my CPU it reports: Generation : G8 / T29 Name : TN0 (Trinity) FX/Opteron 32nm (ES) Revision/Stepping : 0 : 10 / 1 Stepping Mask : TN-A1 Microcode : MU6F10010F The (ES) is a well-known code in product development, meaning "Engineering Sample". Those are beta versions of the CPU, which still may contain some bugs, or even have features switches off. I contacted both the PC's manufacturer Medion as well as AMD about this. I had to downvote the Medion helpdesk here. The person I talked to boldly said Sandra was wrong (without knowing how Sandra got this information; he didn't even know the software), and used the word "impossible". His conclusion was "We’re not taking this in consideration for service”. Right. So, if you like Medion for their good prices, but like good support even better, you may consider buying your PC elsewhere. AMD was more helpful, but wanted to be sure before replacing the part (which I find reasonable). They suggested that I dismount the cooler from the CPU to check what was printed on it to be sure. I'm a bit reluctant here: I would have to wipe the thermal paste from the CPU, and won't know for sure my cooling will still be OK afterwards. Questions Has anybody actually found a confirmed ES CPU in her PC? Is anybody aware of Sandra erroneously reporting CPUs as Engineering Samples? How can you tell an ES, apart from the print on the package? Shouldn't Stepping Mask identify the CPU uniquely?

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• Laptop shuts down randomly without warning

  - by Robert P.

  My Asus Zenbook UX32V turns off randomly when I'm working on it. This happens both when the computer is recently turned on (5 minutes), and after being on for several days. I'm not running any heavy software The laptop is not heating The fan is not working on the maximum capacity (it's not heating) It happens when the laptop is lying still on the table It is no warning, it simply goes black It happens both when charging and on battery My guess is that it suddenly lose power somehow. What puzzles me is that I can flip the laptop upside down, sideways, shake it, etc. without it shutting off. This makes me think it's not something that's loose causing occasional short-circuits. I realize that the laptop probably doesn't like flipping and shaking, but it was the best way I could troubleshoot. I rarely turn the computer off, only have it in hibernate or sleep mode (most often hibernate). I've never experienced that the laptop is off when I wake it up from sleep mode. I've had the problem for a few months and it happens 2-8 times a week. Specs: Asus Zenbook UX32V Windows 8.1 (it happened in Windows 8.0 too) Intel i5-3317U CPU @ 1.70GHz The laptop is approx 1.5 years, but it has a small dent on one of the sides that probably voids the warranty. The dent has been there since week one and I don't think it's related to the problems I'm having now. Does anyone have a clue what might cause this, and how it might be fixed? I've read all other questions (some of which are listed below) that seem related to my issue, but none report the same behavior as I'm experiencing. Most report heavy games, heating etc. Asus N53J Laptop randomly shuts down Laptop is randomly shutting off Computer shuts down without warning My laptop acer aspire 5720 suddenly turn off randomly Computer randomly shutting down Windows 8.1 randomly shuts self down ASUS K55VM Laptop unexpectedly shuts down

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• How to configure IIS for SVG and web testing with Visual Studio?

  - by macias

  Let's say I have a simple web page with svg image in it: <img src="foobar.svg" alt="not working" /> If I make this page as static html page and view it directly svg is displayed. If I type the address of this svg -- it is displayed. But when I make this as .aspx page and launch it dynamically from Visual Studio I get alt text. If I type the address of this svg (from localhost, not as a local file) -- browser tries to download it instead of displaying. I already defined mime type in IIS (for entire server -- "image/svg+xml") and restarted IIS. Same effect as before. Question: what should I do more? Update WireShark won't work (it is in documentation), I tried also RawCap, but it cannot trace my connection (odd), luckily Fiddler worked: From client: GET http://127.0.0.1:1731/svg/document_edit.svg HTTP/1.1 Host: 127.0.0.1:1731 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:10.0.1) Gecko/20100101 Firefox/10.0.1 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip, deflate Connection: keep-alive Answer from server: HTTP/1.1 200 OK Server: ASP.NET Development Server/10.0.0.0 Date: Thu, 16 Feb 2012 11:14:38 GMT X-AspNet-Version: 4.0.30319 Cache-Control: private Content-Type: application/octet-stream Content-Length: 87924 Connection: Close <?xml version="1.0" encoding="UTF-8" standalone="no"?> <!-- Created with Inkscape (http://www.inkscape.org/) --> <svg xmlns: *** FIDDLER: RawDisplay truncated at 128 characters. Right-click to disable truncation. *** For the record, here is useful Q&A for Fiddler: http://stackoverflow.com/questions/826134/how-to-display-localhost-traffic-in-fiddler-while-debugging-an-asp-net-applicati

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• how many sites IIS 6 can handle

  - by Sarah Nasir

  Is there a limit for creating Sites in IIS. i have searched and some forums have it in discussion which says there is no limit. Someone mentioned that he has created upto 100,000 sites in IIS 6 but i dont know his server specs though. Personally i feel that whatever the limit of IIS, the resources will be run out well before the limit reaches. how do big sites like blogger and wordpress handle a huge number of sites on their server. Questions: 1) Is there an upper limit for IIS 6.0? if yes then what is it 2) What should be a good number of requests IIS should serve for a decent server? (I am not talking about dynamic requests on server or logs.) 3) Is there a way I can do the test run on my cloud to test the capability of my server. what factors should i keep in view. db request, page size, disk read/writes etc ? Response shall be highly appreciated.

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