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• openldap make sure password does not contain username

  - by Ryan Horrisberger

  Is there a way using openldap to ensure that a user's password does not contain their name or their username? I know that you can use the ppolicy overlay pwdCheckModule by writing a C function to do password checking, but is this the best approach? It doesn't seem like many folks are doing password quality checking this way--the only example I've found is a github example which only does basic checking.

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• How to encrypt dual boot windows 7 and xp (bitlocker, truecrypt combo?) on sdd (recommended?)

  - by therobyouknow

  I would like to setup a dual boot Windows 7 and Windows XP laptop/notebook computer where each operation system's partition is fully encrypted. I would like to do this on a SSD - a 128Gb Crucial M4. My research Dual boot of truecrypt encrypted OSs on one drive (not possible - in Truecript 7.x at time of writing) This cannot be done on a standard Truecrypt setup - it will only support encrypting one of the operating systems. I have tried this and also read about it here on superuser.com However, I did see a solution here that uses grub4dos as the initial bootloader to chain to separate truecrypt encrypted OSs, in my case Windows 7 and Windows XP: http://yyzyyz.blogspot.co.uk/2010/06/truecrypt-how-to-encrypt-multiple.html I am not going to consider this solution as it relies upon some custom code for use in the bootloader that is provided by the author. I would prefer a solution that can be fully understood so that I can be sure that there is nothing undesirable occuring (i.e. malware or just simply bugs in the code). I would like to believe such a solution doesn't have those risks but I can't be sure. BitLocker and Truecrypt combination - possible solution? So I am now considering a combination of encryption programs: I now aim to encrypt Windows XP with Truecrypt and Windows 7 with BitLocker. Assuming Truecrypt bootloader can boot into non-Truecrypt OSs (e.g. via hitting Escape to go to another menu), then this solution may be viable. SSDs and Encryption (use fastest possible spinning hard disk instead (?)) I read on various superuser.com posts and elsewhere that current SSDs are not suited to whole drive encryption for various reasons: impact of performance algorithms that give SSDs advantage over spinning harddisks. Algorithms used in compression of data for example. Wear on the SSD, shortening its life Security issues whereby data is repeated, as indicated in some Truecrypt documentation So I am now considering not using SSD. But with the aim to have the fastest drive possible, I am considering using the Western Digital Scorpion black 2.5" 7200rpm harddisk as this appears to be top rated among spinning platter-based harddrives (don't work for Western Digital). Summary So to achieve whole drive encrypted dual boot Windows 7 and Windows XP with minimal performance impact I intend to use a combination of Truecrypt and Bitlocker on a top-rated conventional spinning platter-based harddisk. Questions Will my summary: achieve whole disk encryption of the dual-boot Windows XP, Windows 7? OR an you suggest a simpler solution, including one that only requires only Truecrypt (BitLocker not available on XP). Or another encryption tool, including paid-for? provide the highest performance. Am I correct to avoid using SDD with encryption for the reasons I discovered? Are the concerns about SSDs and encryption still very real (some articles I read go back to 2010) Thanks for your input!

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• Best way to partition 1TB (Linux&Windows7)

  - by Simon

  Any intelligent way to partition 1TB and be prepared for resizing/adding/deleting partitions? I was thinking about LVM, but as far as i remember, Windows7 can't be installed on logical volume right? For now my plan is: - ~150GB for Windows7 and other stuff (VisualStudio..., maybe I'll split it 100/50 or something like that) - simple NTFS - 850GB = LVM - disk for linux (Ubuntu) and other stuff virtual machines etc. I'm mostly interested in how and what tools should I use to get easy in maintain partitions for both systems.

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• Linux Software RAID1 Rebuild Completes, but after reboot, its degraded again

  - by zimmy6996

  I have been beating my head with an issue here, and I'm now turning to the internet for help. I have a system running Mandrake Linux, with the following configuration: /dev/hda - This is a IDE drive. Has some partitions on it that boot the system and make up most of the file system. /dev/sda - This is drive 1 of 2 for a software raid /dev/md0 /dev/sdb - This is drive 2 of 2 for a software raid /dev/md0 md0 gets mounted but fstab as /data-storage, so it is not critical to the systems ability to boot. We can comment it out of fstab, and the system works just fine either way. The problem is, we have a failed sdb drive. So I shut the box down, and have pulled the failed disk and installed a new disk. When the system boots up, /proc/mdstat shows only sda as part of the raid. I then run the various command to rebuild the RAID to /dev/sdb. Everything rebuilds correctly, and upon completion, you look at /proc/mdstat and it shows 2 drives sda1(0) and sdb1(1). Everything looks great. Then you reboot the box ... UGH!!! Once rebooted, sdb is missing again from the RAID. It is like the rebuild never happened. I can walk through the commands to rebuild it again, and it will work, but again, after reboot, the box seems to make sdb just vanish! The real odd thing is, if after reboot, I pull sda out of the box, and try to get the system to load with the rebuilt sdb drive in the system, and when I do, the system actually throws and error just after grub, and says something about drive error, and the system has to shut down. Thoughts??? I'm starting to wonder if grub has something to do with this mess. That the drive isn't being setup within grub to be visible at boot? This RAID array isn't necessary for the system to boot, but when the replacement drive is in there, without SDA it won't boot system, so it makes me believe there is something to that. On top of that, there just seems to be something wonky here the drive falling off of RAID after reboot. I've hit the point of pounding my head on the keyboard. Any help would be greatly appreciated!!!

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• Local Apache on Windows XP not finishing page requests

  - by asgeo1

  I have Apache 2.2.11 installed locally on my Windows XP (SP3) dev machine, which I setup about 3 months ago. I have just started having a strange problem in the last few week. Apache is serving some basic PHP applications like phpMyAdmin. When I make a page request, Apache appears to not finish serving all resources for that page. Firefox shows the "Transferring data from servername..." message, and the page never completes. The same problem happens in Internet Explorer too. I can sometimes tell which resource it is waiting on, because most of the page will render except for some image or similar resources. (Not sure why Firebug doesn't show this) It doesn't have the problem every page request - for page requests where most of the resources are cached in my browser, the page request will work with no problems. Or pages that are very light will work with no problems. However, if I "hard" refresh the page, I will have this problem (probably because it is requesting all page resources) Does anyone know what this could be? It is so strange that it has only just started happening - and I did not make any changes to my system (that I am aware of) I tried playing with the Apache ThreadsPerChild setting, but it did not seem to make a difference. UPDATE: I have been doing some more tests. I have been serving the most basic of pages, just a plain HTML file: <html> <body> <h1>testing</h1> </body> </html> If I request this page multiple times in a row, AND each request occurs immediately after the previous has completed, then 50% of the time the request will time out. However, if I put a 1-2 second gap between requests, then there is no problem. This correlates to what I have observed when the brower requests a real application page. When the browser has nothing cached, then all of the page resources are requested from the browser in a short amount of time - this appears to trigger the problem. UPDATE2: Nathan Long has helped me understand the issue a little better with the server-status page (see below). It is weird, it is like the server has a hickup sending data to the client. The client sits there waiting forever for data that never arrives. Closing the client process does not terminate the connection on the server - the server still has active threads for each previously attempted connection, but they just sit there - not sending any data and never terminating. (even though the client is now closed) Only a restart of the server seems to terminate them.

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• How to boot a partition using a virtual pc.

  - by Fantomas

  I have backed up my failing hard drive using a ddrescue Linux command to two partition files - p1 and p2 5GB and 90GB each. Now, without saving this back to an actual disk - is there a way for me to boot my old computer virtually, using Virtual PC or Parallels or VMWare? How? Thank you.

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• Looking for a tool to manage all maintenance work on my PC

  - by harlev

  I'm looking for a tool to manage the maintenance tasks on a Windows PC. Things like disk defrag, antivirus, update software and any other maintenance. This should not be an all-in-one solutions, with these features built in. Rather, it should be a framework to automate other tools (like CCleaner, Defragler etc.). Many tasks should be run periodically (with different frequencies). I'm looking for one tool to manage all these tasks.

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• Deleting Temporary Internet Files through Group Policy

  - by Kami

  I have a domain controller running on Windows 2008 Server R2 and users login to application servers on which Windows 2003 Server SP2 is installed. I have applied a Group Policy to clean temporary internet files on exit i.e to delete all temporary internet files when users close the browser. But the group policy doesn't seem to work as user profile size keeps on increasing and the major space is occupied by temporary internet files therefore increasing the disk usage. How can i enforce automatic deletion of temporary internet files?

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• Can I use BitLocker on a Windows 8 Tablet? How?

  - by Coderer

  I hear that Windows 8 Pro can use full disk encryption. I also understand that Win8 is targeting the "slate" / "tablet" form factor specifically. But all my previous experience with BitLocker requires you to put in some kind of PIN or password at boot time -- how can I do this without a (hardware) keyboard? This preview of an upcoming Win8 tablet mentions BitLocker but doesn't address the PIN issue. Am I missing something?

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• What is the best way to archive (spider) a site that is going to be removed?

  - by Guy

  Three different blogs that I read have recently announced that they are going to be discontinued and removed from the web. Although the archived pages will probably be in Google's cache for a few weeks after they've gone and some of the pages will be in the Way Back Machine I'd like to archive those sites to my hard disk for future reference. What is the best way to do this? Is there any software that transforms a blog (e.g. Blogspot) into a chronological PDF?

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• EBS with RAID0 (striping) and restoring snapshots

  - by grourk

  We have a MySQL database on EC2 and are looking at the disk IO performance there. Currently we have a single EBS volume with XFS and take snapshots for backup. It seems that a lot of people have seen significant performance gains by striping across multiple EBS volumes with software RAID. If this is done, how does one take snapshots and ensure the consistency of the file system? It seems to me that restoring the file system from multiple snapshots could be tricky.

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• Missing ISOBurn context menu

  - by Tim Jarvis

  This is a slightly updated version of the question I asked here I have isoburn.exe in the system32 directory of my machine, however I am missing the context menu when right clicking an ISO image ("Burn Disk Image") Does anyone know how I can restore the context menu?

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• RHEL6 kick start fails with kernel panic - not syncing error

  - by mrchampe

  On a brand new (just unboxed) Dell Precision 7500 computer, I began a kickstart using a red hat boot disk and a kickstart file hosted at an http address. There is a picture of the full error below with trace information I believe this is different than the other questions relating to kernel panic errors. What I would like to know is What causes the kernel panic How does one fix this such that the kickstart finishes Additional information can be provided as necessary.

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• Enabling Bitlocker in Native VHD Boot

  - by Trevor Sullivan

  I have a laptop with a single hard drive, using the GUID Partition Table (GPT) disk layout, with the following partitions: 120MB EFI System Partition 300MB Microsoft Reserved Partition (MSR) Remainder - GPT primary partition I have a Windows 8 Professional VHD configured as a native-boot VHD on the GPT primary partition. Can I use Bitlocker to encrypt my main partition, or to encrypt the VHD volume?

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• Trying to find books

  - by robblot

  When I was learning Visual Basic.net 2008 I found a book that not only taught the basics but by the end of the book I had developed a fully working database application. Does anyone know where I might find a simular book but using Visual C++?

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• How to simulate htaccess for auth with IIS without having access to the server config ?

  - by bgy

  Hi, I need to put a website on windows server IIS, i'd like to use basic authentification like i'd do with Apache, with the .htaccess / .htpasswd I read here & there, that i could do this through the admin tabs of IIS, but i'm not the administrator, and i only have ftp access. It seems to be a 'web.config' file where i could do this. Is there a way to set up such things within a config file ? I'm not used to work with IIS...

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• How do I get double sided printing working on a HP Laserjet 2300DN with windows 7

  - by Ian Ringrose

  I have a HP LaserJet 2300DN connected var the network (TCP direct to printer), however when I set it up on Windows 7 (64 bit) the driver does not give me the option to do double sided printing. How do I get the driver to know I am using the "DN" rather than a basic 2300?

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• IE9 freezes with Protected Mode enabled

  - by Peter Wone

  After a disk failure and a new build of Win7, IE9 locks up on most web pages including Bing. Running it as Admin works, and turning off Protected Mode also works. Neither of these was necessary prior to the rebuild and examination of colleagues' workstation config show that it's only my workstation with this quirk. Can anyone suggest a remedy? I have tried bcdedit /set {current} nx AlwaysOff and a reboot, with no effect.

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• Moving from VPS to Cloud

  - by GRIGORE-TURBODISEL

  ...and I have a few questions. I'm basically working on a MySQL+PHP based webapp. Since I don't have on-demand scaling with VPS, I'm planning to move from VPS to Cloud when I hit the 1000 subscribers barrier. I'm looking at Windows Azure but I'm ok with other suggestions. So here are my questions: Will it really cost me a kidney? Every subscriber needs to download around 4-5MB of static resources each day. Bandwidth is free on the VPS but here I see costs can easily get to $800.00/mo; this makes me very insecure about the whole thing, I mean VPS is just $2,000/yr. Do I need another VM or is PHP included in the Web Sites? I have basic sysadmin skills, I think I can handle setting up a PHP install, but will I have to do this? If yes, what other service do I need to setup manually? What about Memcached, MySQL, etc? What security protections does it include? For example I have some basic protection included, like directory traversals and executable files upload; I also have CloudFlare on my other websites for DDoS protection; will I need to do the same thing here too, can it even be installed, can I edit my DNS records, etc? How are e-mails, subdomains, add-on domains, parked domains, etc. handled? I haven't seen any references to e-mail boxes. On the VPS I simply add them from cPanel ([email protected] / whatever.mysite.com / ...); do I have a similar management interface here? Do I get SSH access? Or at least FTP, remote MySQL access and maybe some incremental back-ups or something? Can I see my quotas and advanced traffic info? I must mention that I really like the idea of the whole "cloud" concept, the added reliability and everything but I really need maybe a parallel to regular hosting or something so I know what to expect.

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• Is it possible to reverse a service pack on a Windows XP installation media?

  - by Billy ONeal

  Hello :) I need to test a piece of code which only seems to fail on Windows XP RTM. Unfortunately, all my disks came slipstreamed with SP2 on-disk. Is there any way to install an RTM install using my SP2 CD and key? Billy3 PS: Not sure if this belongs on SU or not -- please vote it over there if you think so.

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• How to disable or tune filesystem cache sharing for OpenVZ?

  - by gertvdijk

  For OpenVZ, an example of container-based virtualization, it seems that host and all guests are sharing the filesystem cache. This sounds paradoxical when talking about virtualization, but this is actually a feature of OpenVZ. It makes sense too. Because only one kernel is running, it's possible to benefit from sharing the same pages of filesystem cache in memory. And while it sounds beneficial, I think a set up here actually suffers in performance from it. Here's why I think why: my machines aren't actually sharing any files on disk so I can't benefit from this feature in OpenVZ. Several OpenVZ machines are running MySQL with MyISAM tables. MyISAM relies on the system's filesystem cache for caching of data files, unlike InnoDB's buffer pool. Also some virtual machines are known to do heavy and large I/O operations on the same filesystem in the host. For example, when running cat *.MYD > /dev/null on some large database in one machine, I saw the filesystem cache lowering in another, monitored by htop. This essentially flushes all the useful filesystem cache in guests (FIFO) and so it flushes the MySQL caches in the guests. Now users are complaining that MySQL is very slow. And it is. Some simple SELECT queries take several seconds on times disk I/O is heavily used by other machines. So, simply put: Is there a way to avoid filesystem cache being wiped out by other virtual machines in container-based virtualization? Some thoughts: Choosing algorithm for flushing filesystem cache in the kernel. (possible? how?) Reserving a certain amount of pages for a single VM. (seems no option for filesystem cache type of pages that reading man vzctl) Will running MySQL on another filesystem get me anywhere? If not, I think my alternatives are: Use KVM for MySQL-MyISAM running VMs. KVM actually assigns memory to the VM and does not allow swapping out caches unless using a balloon driver. Move to InnoDB and tune the buffer pools, dirty pages, etc. This is now considered to be 'nice to have' on the long-term as not everyone responsible for administration of the system understands InnoDB. more suggestions welcome. System software: Proxmox (now 1.9, could be upgraded to 2.x). One big LV assigned for the VMs.

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• File Locked on Flash Drive

  - by AtomFury

  I'm completely frustrated. I'm an owner of a OCZ 8GB Rally2 which I've used flawlessly for about 4 months now, and all of a sudden this week I begin getting errors telling me that I can't delete a file due to "make sure the disk is not write-protected, full or and the file is not in-use" dialog. Here's what I've tried: Deleting the file using FileASSASSIN (it's worked on everything else but files on this darn flash drive) Formatting the flash drive and then restoring the backed up information (I format to NTFS, FYI) Any suggestions on what to do?

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• Forgotten account password

  - by blade

  I kept my passwords recorded but the location on my PC where I kept this went missing. I now can't get into Windows Server 2008 R2 as I can't remember the administrator or named account credentials and have no password reset disk. This is on a VM (VM Player - which btw is temp till I get Hyper-V). How can I get back in? If I make AD can I join the server to AD and then set a domain account?

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• raid 6 vs raid 10? which would you choose.

  - by dasko

  my choice would be raid 6 for a file server since you can lose two drives and it does not matter which set of two can die. from what i understand with raid 10 you can lose two drives but if they happen to be off the same raid 1 then you are a out of luck? any suggestions? basic file server with about 200gb of data and it would act as a single point of backup for other workstations and servers. thanks in advance.

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• What is the default mount point on Linux systems (all)?

  - by Vijay Sharma

  My question is very basic in nature. Is the mount point for external media (like USB) always /media? Because in a Debian system, if I plug in any USB device that goes to the /media folder. So is it the case with all the other Linux flavors like Fedora, Ubuntu, etc. If a USB device is automatically mounted will it always go to the /media directory?

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