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• How do i mitigate DDOS attacks on static servers?

  - by acidzombie24

  Here is a slightly different take on DDOS attacks. Rather than a server with dynamic content being attack i was curious how to deal with attacks on servers with STATIC CONTENT. This means cpu tends to not be an issue. Its either bandwidth or connection problems. How would i mitigate a DDOS attack knowing nothing about the attacker (for example country, ip address or anything else). I was wondering is shorting the timeout and increasing amount of connections is an acceptable solution? Or maybe that is completely useless? Also i would limit the amount of connections per IP address. Would the above help or be pointless? Keeping in mind everything is static checking for multiple request of the same page (html, css, js, etc) could be a sign of a attack. What are some measures i can take on a static content server?

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• mac osx script - find mounted disc with name, copy file from desktop to it, when copy complete, unmount disc

  - by Joshc

  Is there some kind of mac script which finds a newly mounted disc drive that has the name 'EXAMPLE', then copies a file/folder to it and safely ejects the disc when copy has finished? I don't mind if the script needs to be executed by a short cut. And will it work if there are multiple drives plugged in? The reason I am asking is becuase i have 5000 usb memory sticks that I need to copy about 20mb worth of data to it. Thanks in advance for any ideas.

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• How do I correct the kernel version loaded by Grub2 in Ubuntu 12.04

  - by Paul D'Ambra

  I have a linux vps running Ubuntu 12.04 and when I run uname-r it replies: paul@webforms:~$ uname -r 2.6.32.33-kvm-i386-20111128-dirty paul@webforms:~$ sudo grub-install -v grub-install (GRUB) 1.99-21ubuntu3.1 if I run update-grub I get: paul@webforms:~$ sudo update-grub Generating grub.cfg ... Found linux image: /boot/vmlinuz-3.2.0-26-generic-pae Found initrd image: /boot/initrd.img-3.2.0-26-generic-pae Found linux image: /boot/vmlinuz-2.6.38-15-generic-pae Found initrd image: /boot/initrd.img-2.6.38-15-generic-pae done and then rebooting gives me the same dirty kernel I'm going round in circles and as a relative noob I'm sure I must be missing something obvious so over to the hive-mind!!

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• Retuning voice in full song so that singer is on-tune

  - by Dan W

  I have some potentially great songs which are spoilt by singers who sing out of tune. Is there any easy to use (and hopefully cheap) software that 'corrects' the song so that they're not off-tune anymore? I don't mind too much if the backing is somewhat affected too, if the state-of-the-art isn't quite there yet. I've heard of auto-tune of course, but as far as I know, that's before the song is put together (i.e. the singer's voice as an individual track, before it's mixed with the backing).

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• NGINX 301 and 302 serving small nginx document body. Any way to remove this behaviour?

  - by anonymous-one

  We have noticed that when using nginx internal 301 and 302 handling, nginx will serve a small document body with the appropriate Location: ... header. Something along the lines of (in html): 301 redirect - nginx. As appropriate in the above behaviour, a content-type text/html and content-length header is also sent. We do a lot of 302 and some 301 redirects, the above behaviour is wasted bandwidth in our opinion. Any way to disable this behaviour? One idea that crossed our mind was to set error_page 301 302 to an empty text file. We have not tested this yet, but I am assuming even with the above, the content-type and content-length (0) headers will be sent. So, is there a clean way to send a "body-less" 301/302 redirect with nginx?

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• Dovecot/Postfix-mysql e-mail Aliases are not correctly forwarded

  - by jo_fryli

  I recently set up Dovecot/postfix-mysql on my Debian Squeeze Server and I have a bit of a problem. When ever I send a email to an alias ([email protected] forwarded to [email protected] for example) Postfix (or Dovecot, I'm not quite sure) puts this email into a Mailbox rather than forwarding it to the real Mail-Adress. I have tested all the MySQL queries and they all behave the way I intend them to do. foobar dovecot: deliver([email protected]): msgid=<000001385b464c9a-e40af11e-3bf4-49f6-903d-1d2369f6bfb6-000000@barfoo: saved mail to INBOX master.cf main.cf Keep in mind that normal E-Mail sending and receiving works just fine! I have set up my MySQL Tables with Postfixadmin. Thanks for your help!

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• Sendmail.mc: alias all incoming e-mails to one account

  - by Angus

  I need to alias all mail coming from another SMTP server to this one account "myinbox". The system in question is to receive all e-mail on the domain, if that's any help. http://william.shallum.net/random-notes/sendmailredirectallmailfordevelopment is a template for the beginning of a solution, but that routes everything (including outgoing and internal mail) to that one account, and trying to understand how these R rules work is making my head spin. I think the answer is in sendmail.mc rather than any Procmail configuration. So I think what I generally don't want the filter to do is: Interfere w/any outgoing e-mail Interfere w/any internal e-mail Sometimes some cron job causes "root" to mail to "root". I don't want these to go to myinbox. Cause infinite loops Who does? Bounce messages and any DSNs come to mind. I'm running Sendmail 8.13.1 and Procmail 3.22.

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• create replica of ext4 filesystem and re-use it

  - by Jatin

  Is there a way that I can use my Linux ext4 file system, as such and then use it on some other computer. I have a dual-boot of Windows 7 and Ubuntu 10.04 and my partition table looks like this: My question might not be clear, so explaining it with an example. Can I copy my Linux partition on a flash drive and then use it on a different PC, with or without any need to install Ubuntu on new PC, by simply booting from the copied ext4 partition. This way, I can easily port my Ubuntu packages and other applications, settings etc. from one PC to other. If it's a very stupid question, please don't mind.

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• Provision storage in SAN encironment

  - by wildchild

  hi,.. Can somebody help in understanding how Lun Provisioning is done in clariion based on client requirement. Say, a client needs one 50 GB space on the host( for application) ,two -350 GBs ( for DB and stuff) on the same host and i have 4 raid groups with space of 200 GB in one 50 GB in second and 400 GB and 400GB in rest two all having 5 disks. And , I 'm using Raid 5 only. How do i provision keeping performance in mind( so that performance hit is not there)?..And i need to understand the concept of meta head as well. Please help me by elaborating the above scenario..I am learning to provision storage in non productive environment( b'fore going ahead and working on client prod server) and i have been learning a lot from SF ...I request the seniors here to help me understand it better. Thanks for reading

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• mysql client fails to start on command line

  - by Mark Basmayor

  Hi, I have been using the mysql command line client a lot before but I suddenly start getting this error when I try to launch it. mysql: relocation error: mysql: symbol strmov_overlapp, version libmysqlclient_16 not defined in file libmysqlclient.so.16 with link time reference The only significant event that comes into my mind is updating from Ubuntu 9.10 to 10.4. I'm not sure if there's anything else that I did to mess it up. I tried uninstalling both the mysql server and mysql client like so but to no avail. sudo aptitude purge mysql-server-5.1 Any help will be much appreciated, thanks.

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• How can I transfer a blog hosted on Community Server to WordPress?

  - by Martin Plante

  I have a blog hosted on Community Server 2.1 (old version). I want to transfer it to WordPress (.com). I have tried exporting it to the BlogML format, but it failed with an exception. I saved a copy of the full RSS feed, by setting the # of posts to show to a huge number, save, then lower it back. I have all images and do not mind having to upload and rename them one by one. There must be a way to read that RSS file and either directly import it into WordPress, or for a more complicated path, transform it with the proper XSLT into the BlogML (or other) format, to import it into WordPress?

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• Trackpad Drag lock pissing me off with Windows 7

  - by rockinthesixstring

  This is driving me insane and I've scowered the web for two days trying to fix this. I just picked up an Apple Magic Trackpad to be used exclusively on a Windows 7 PC (not apple with bootcamp). I found a nice driver that got it working right away, but when I'm moving the cursor around the screen, often it will begin "highlighting" text, or picking up and dragging things I don't want it to. I looked in the "regedit" where people are saying there is binary that can be changed, however the driver I installed doesn't use the binary being suggested. Can anyone suggest a better driver for my situation or a way to disable the drag lock that is driving me so nuts? I don't mind not being able to lift my finger when dragging, it's a far better compromise than having the insane feature.

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• Backing up mail accounts without full access to mailserver

  - by Agos

  Hi everybody. I'm in the process of migrating some stuff from a (crappy) hosting. Files were easy with SSH access, but mail is giving me some thoughts. This is the situation: qmail server, no ssh access I own postmaster account accounts are accessible via web interface or POP3 I'm interested in transferring emails, but if whole accounts can be transferred it'd be better. Being POP3 I'm fairly confident every message has been downloaded, but of course I'd like to download the whole thing to be safer. Right now I have this in mind: Enter in web admin Change each account's password (it's only a dozen or so accounts so still feasible) Send new password to user telling him please not to change it getmail or something like that put on new IMAP server in some way (which I still haven't planned) But I feel there should be a better way to do this. Is there? Thanks in advance!

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• Any way to disable specific CPU sleep modes?

  - by Philippe

  I just got a new Toshiba Tecra S11 notebook, which has a Core i5 520M CPU, and it appears to suffer from a well-known problem: a high pitched noise when the CPU is idle. Googling around revealed that this is caused by a specific power-saving mode in the CPU. In most cases, C4 mode is blamed for the noise. So my question is: is it possible to disable C4 mode (or any other "sleep" mode) using some utility or BIOS setting? I don't mind if it hurts battery life. I'd appreciate any advice on this matter. It's driving me crazy.

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• Configuring NVIDIA Quadro with Dell Precision M4600

  - by vsecades

  After a frustrating couple of weeks when I recently bought my Dell Precision laptop, I managed to fix an issue where Ubuntu (yes, was NOT using Windows, get serious) would not recognize the video card and would cause all sorts of problems all over the place. I ended up one Saturday morning nearly throwing this thing away, when I managed to find a post about NVIDIA Optimus technology... ( http://www.pcmag.com/article2/0,2817,2358963,00.asp ). Now I am a huge advocate of disruptive new stuff, as long as we keep the broader audience in mind. Anyhow, disabling this (which as the BIOS settings state only work on Windows 7 or later), effectively allow the NVIDIA based Ubuntu driver to kick in full force. No need for a trash can anymore thankfully. As I saw multiple posts all over the place about this, check your BIOS, disable and try the video again to see if this corrects your issues. Best of luck!

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• rails didnt install correclty, specificly the uninstaller

  - by sam

  ive just installed rails using railsinstaller.org for osx, rails and ruby seem to be working ok (checked by running rails -v and ruby --version). But when it installed i got an error saying that not there were errors and the uninstaller didnt install correctly. Somthing odd i saw was that when i load terminal i get this showing up Last login: Fri Nov 30 13:12:09 on ttys000 unknown5c969d7cc475:~ Sam$ specificly the "unknon5c96..." part im not sure if its related ? I think i might have got the install error as xcode wasnt installed first, for peice of mind id like to unistall it and load it back on, but when i try and run the installer from the application folder it just asks for my password and then dose nothing.. any ideas how i can fix this ?

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• Windows 7 Index Search does not work in Google Drive folder

  - by Joel

  I recently installed Google Drive on my Windows 7 laptop and began syncing all my files a few days ago. All was well until I needed to search for some documents in my local copy of Google Drive using Windows 7 Search feature. Windows did not return any results at all. Weirdly, when I turned off Windows indexing for that folder, it began returning results. I don't mind using windows search w/o the index but sometimes it takes too long to search (especially for keywords inside documents like Word and Excel). It's driving me nuts to the point where I have given up on Windows Search and switched to Google Drive's online search to look for files (not as convenient as I still have to go back go google drive in Windows to locate the folder). Any help appreciated!

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• Multiple Graphics cards - Non Multi-Display Setup

  - by Alan Thomas

  Is it possible for me to utilize the processing capabilities of multiple graphics cards, even if I'm only using one monitor? I recently bought a new AMD graphics card, fairly top of the line. I also have a two year old, decent nVidia card. They're obviously very different cards. I don't really mind for gaming because my current card can handle most games fine by itself. I'm concerned about video editing programs such as Adobe Premiere and After Effects. Would the system be able to utilize the power of both cards to, say, render a video? I have both drivers still installed on my machine. And because there is only one monitor connected to my current graphics card (AMD) the nVidia would be connected to no display. So I am wondering whether it would or could be utilized in some way to help in processing video. Thanks!

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• New Linux Mint User Networking questions

  - by nyCecilia

  I have a readynas that I've been using with XP, Vista, and Win7. Because of weirdness with Vista, it is set up for full read/write guest access. Now I have a Linux Mint netbook. I have set up smb on it and can read from the readynas smb shares, but I can't write. What else can I check? Part2--(keep in mind my network knowledge is small...or smaller) what is the difference between NFS and SMB, can a readynas be set up to allow access to the SMB shares via NFS (if I can figure out NFS lol)? A link to a guide for beginners would be appreciated, google searching "Linux Mint Readynas" doesn't give me anything useful.

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• How do I make a Windows virtual machine replicate to another datacenter/cloud?

  - by zippy

  We have a Windows 2008 VM running IIS and SQL Server Express (it's an all-in-one web application). We need to have another copy at our secondary datacenter site. What is the best way to do this? It doesn't have to be running all the time but it has to have almost the latest copy of the current VM. I took a look at VMWare Fault Tolerance and after the heart attack at the price I starting looking for another solution. If need be I wouldn't mind copying it over to a cloud VM provider, if I can find one that lets me copy my own VMs up and start them up without any conversion process.

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• Rename Devices in Device Manager

  - by Luke

  This is mostly just for the USB ports, as I recognize everything else in computers.... Anyways, is there a way to rename, or otherwise, identify which USB port (or other hardware for that matter) is which device in Device Manager? I know I can plug in a flash drive, then see what port it is connected with, and find out that way. What I would like though, is to find out that a certain plug is always a certain device in Device Manager. If I can then have a system in mind that always has the same order, I can look and see if a USB port is not being detected or not working properly, and as I uninstall/reinstall USB devices, I know I won't lose my keyboard or mouse, for example. The OS in question currently is Windows 7, but I would accept a solution for ANY version of Windows USB Devices | +--+USB Root Hub Port A | | | ---Keyboard | +--+USB Root Hub Port B | | | ---Mouse | +--+USB Root Hub Port C | ---Empty

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• Explaining Git to someone new to revision control

  - by MaxMackie

  I've recently decided to jump into the whole world of revision control to work on some open source projects I have. I looked around (subversion, mercurial, git, etc) and found that Git seemed to make more sense conceptually to me. I've set everything up on my computer (opensuse) and made an account on gitorious (let me know if there is a more simple/better hosting provider). I understand Git from a conceptual point of view (work locally, commit to a local repo, others can now checkout from you, right?). But where does gitorious come into play? I commit to them as well as committing locally? Apart from conceptually, I don't quite understand HOW it works when it comes to making a local repository and running git init inside a folder and that HEAD file. Keep in mind I have never used any form of revision control ever before. So even the most basic concepts are foreign to me. As I post this, I'm also reading up and trying to figure it out myself.

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• Can I disable certificate error/warning in Firefox/Chrome/Internet Explorer?

  - by Poni

  Exactly as the title says; I don't mind which browser, I just want to type "https://........" and see the page normally without any certificate error, knowing that I might risk myself by allowing an invalid certificate! It seems like every browser producer thinks he knows better than me, the Super User !! =) Now, does anyone know how to remove warning/error related to this? In any of these browsers (Firefox/Chrome/Internet Explorer/[you-may-suggest])? Oh, and don't advise me a workaround like adding to exceptions. Please don't mention that. I'd highly appriciate a concise & precise answer! Edit: The answer I seek concerns ONLY the browser. No third-party objects to be used.

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• Gmail exchange settings for desktop mail clients?

  - by Abhishek

  So I have an ipad, and I have my gmail account there configured via Microsoft Exchange... I don't know a lot about the underlying technologies, but using exchange is mind blowingly awesome... I mean, I receive mail INSTANTLY, and to be able to sync things like my calendars and my contacts at the same time, its just amazing... So enough gloating, and onwards to the real problem... How do I do the same thing on my Mac? Any email client will do... I've tried both, the built in Mac Mail (4.5) app, as well as Outlook for Mac 2011... And I can't get it to work on either...

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• Transfer Raid Drives to External Enclosure

  - by dubbeat

  I have 2 raid disks (a grand total of 360GB) in my laptop. I'm fast running out of space and want to install new drives. I've a pretty good idea how to do this. My question is what can I do with the drives that I remove? I've got lots of media files on these drives that I'd like to keep and maybe transfer back onto my laptop once I have the new drives installed. Bearing in mind that I know next to nothing about hardware how do you suggegst I go about reusing the removed drives somehow? Thanks,

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