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• Combat server downtime by duplicating server and re-routing when main server is down

  - by Wasim

  I have a CentOS server which at times either crashes or gets attacked with DDOS. At the moment I have an off site backup which is filled up with 1.7TB of data. I'm currently paying as much for the backup as I am for the server and I was looking for advice from experienced people as to what option is best to proceed from here. Would it be a viable solution to ditch the offsite backup, and instead purchase an additional server which is an exact duplication of the first server. So if the first server is down, users are re-routed to the second server without noticing the first server is even down. This would create an automatic backup of the first server (albeit not offsite) and relinquish the need for the expensive offsite backup. Is the above solution a true solution to pricey backup or is offsite backup absolutely necessary? How would I go about doing this (obviously it's pretty complex so just links to some reading material or the terminology of the procedure would be great)? Appreciate the help and advice.

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• Looking for easiest, most simple solution to run a customised DNS Server for my local network on Windows 7.

  - by Jamie G

  I need to forward some websites, such as http://testing.server/ to an fixed IP address on my local network. I can do this easily on one computer using the hosts file. However, I need this to work for all machines on my network. I think the best way to do this will be to setup my own DNS Servers and add the custom DNS settings there. However, I'm looking for the simplest way possible to do this - I really don't want to spend hours setting up Unix Servers and running tricky terminal based scripts just to do this! My server is a standard Windows 7 machine. My dream would be a nice simple windows program with a GUI where I could input my ISP's DNS server and it would use those records, unless I had specifically set up my own DNS for a domain to use instead. If it had a web based admin system that was accessible from another computer on the network that would be even better. Does anyone know of anything that can do this? Many thanks indeed.

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• Windows disk change monitoring for malware analysis

  - by SuperDuck

  Not sure if this question belongs to here, because it has some relations with 'serverfault' (system backups) and 'stackoverflow' (software analysis). I'm looking for a solution to monitor disk changes on a Windows system and selectively revert them. It should be able to handle live files like registry parts, so may need to be an offline backup software. It shouldn't silently pass over files which the current admin user doesn't have permissions on (files with no permission entries or owned by the 'system' user) Registry change tracking would be a bonus but is not a requirement I use virtual machines for malware analysis, there is even no solution to list file changes in disk snapshot files (delta VMDK). I currently use Ashampoo for monitoring changes. Though it's the best one between similars, it's not a good software and hasn't really evolved in many 'platinum', 'deluxe' versions released in the last 10 years (it even used non-resizable windows until the latest version). The real problem is it misses some disk / registry changes. Perhaps it only compares modification dates and doesn't catch a change if the dates are preserved. So, I think the solution should compare files using hashes, or file sizes at least. There are numerous backup software out there and I'm sure one can handle this, offline or online.

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• Host Name Resolution - ISA 2006 - VPN PPTP

  - by Brian Lee Jackson

  We are running an ISA 2006 server and PPTP VPN connection works fine. Clients are able to connect to internet, access Outlook, CRM, etc. The problem we are encountering is that host name resolution is not working. Example, when connected via VPN I can’t ping any box other than the VPN server by the host name. Nslookup also fails. I can ping everything fine via IP address. But for clients, they need to be able to access their “mapped” drives over the VPN which all are mapped by host name. I recently took over this position and it sounds like this used to work. What would be the best place to check first? I haven’t had much exposure to ISA and have been reading up a bit on installation procedures, etc. DNS is hosted and running on our domain controller, as well as WINS. It isn’t on the ISA box. Is there a firewall policy that perhaps got removed? What usually is required for host name resolution to pass through. Any help would be appreciated, thanks!

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• Replacement for public folder workflow, I'm confused as to how sharepoint does it.

  - by RodH257

  For years Microsoft has been slowly phasing out public folders, perhaps exchange 2010 really is the LAST TIME they'll be shipped... I've heard sharepoint is the replacement, but I don't understand full, can someone give me an idea of how to replace this workflow? In our office, we have projects, they have a project number, ie 10353. Each job folder has a public folder, organized in a hierachy like Projects Year Folder Subfolders The main subfolder we use is for genera correspondence. When an email is received that relates to a project, it is dragged and dropped (or right click move to) a public folder. Adding public folder favourites for each user helps this. When an email is sent, we have a custom email form, which is the default email form, but with a project number field next to the subject line. When you enter the job number in there, it carbon copies our filing system in, which reads the job number and puts the email in the public folder for you. if you need to refer to emails, you go to public folder and find them there. This isn't the best with large jobs, but it works ok. Now, I have limited experience with sharepoint (well, WSS), we've used it to do some neat discussion boards/polls etc as an intranet site, but I haven't seen much of its integration with outlook. The great thing about our solution is how tightly it integrates with outlook which is exactly where the emails are. If you want to forward an old email, you go to public folder and forward it, simple. Any solution that replaces it should be at least as easy as this. Improvements we would like would be to have better searching of emails, better support in exchange (ie future version) and also, custom forms in outlook are being phased out (the VBA kind), so avoiding these would be good. Does sharepoint do this? or what solutions do this kind of thing?

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• samba access from win98

  - by SimonSalman

  Hello, the admin installed a new file server in our institute: OpenSuse 11.1 with Samba 3.2.7-11.3.2-2154-SUSE-CODE11. They copied the smb.conf from the old machine (hosting Samba 3.0.0) to the new one. Everything works as before, but one Windows 98 machine can see but not access the file server. It prompts for user authentication, but will not accept any user-password combination. There exists a lot of discussion about the problem on the net, but none provided a clear answer to the problem. EDIT: 1. I changed Win98 registry enable plain-text passwords, and alternatively changed server's smb.conf and /etc/smbpasswd to accept encrypted passwords 2. Further I provide a profile with a user-password combination on Win98 machine similar to one of the samba users-password combinations. 3. I changed smb.conf such that the samba server is the Local Master Browser all these changes are not necessary when using the older samba server. So, I conclude that a configuration problem on the server side is likely. If you need any further information, I will post them here. Best regards, Simon

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• Recent DDE / file open issue with Office 2007 affecting only a few machines, is a Windows Update to blame?

  - by kafka

  All our workstations run Windows 7 Professional 64 bit. It started with one, then another, then another couple of machines having a problem accessing Word files locally and on the network. This doesn't happen on my machine though. Affected users get the error message 'There was a problem sending the command to the program'. I've Googled for solutions, but none of the answers worked. They suggested deleting certain registry keys; unregistering and reregistering the program for DDE; resetting the way that the shell opens .docx programs etc. each to no avail. As it affects local and network shares I believe the problem lies with the clients, and not the server, and I'm starting to suspect that there could have been a recent Windows Update which has caused this. I've tried comparing the updates on my working machine with an affected machine, but I can't immediately see any major differences. Has anyone else recently encountered this problem? What are the best steps to take to further isolate what could be causing this?

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• How to recover deleted files on ext3 fs

  - by Mike

  I have a drive which was using the ext3 filesystem. I am told that about 10Gb of data was deleted off the drive (probably via rm). The drive is currently mounted as read-only to preserve all data. Does anyone know of a method to restore some or all of the data? Also if it helps, the OS was Fedora. I've also been told that the data is mostly ASCII fortan source code and Matlab files. Conclusion I have finally managed to get the data back, and with the simplest means ever! After weeks of trying and failing to bring back much of any data, I brought someone in today to take a look at it and offer suggestions, he simply cd'd to the directory and everything was there! It was never lost in the first place!!! Needless to say I feel really dumb right now, but I learned quite a lot with this whole fiasco. At any rate, while I was looking through data forensics solutions, I found that the Autopsy, or more specifically the SleuthKit was the most helpful. So I will accept that as the final answer. I would also like to note for anyone that comes across this later on that the most up-voted (currently) answer by sekenre was also helpful and I learned a lot, but ultimately it did not help with the type (very many, and some being very large) of files I was dealing with. So thank to all you that provided suggestions and wish you all the best!

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• Is it ok to share private key file between multiple computers/services?

  - by Behrang

  So we all know how to use public key/private keys using SSH, etc. But what's the best way to use/reuse them? Should I keep them in a safe place forever? I mean, I needed a pair of keys for accessing GitHub. I created a pair from scratch and used that for some time to access GitHub. Then I formatted my HDD and lost that pair. Big deal, I created a new pair and configured GitHub to use my new pair. Or is it something that I don't want to lose? I also needed a pair of public key/private keys to access our company systems. Our admin asked me for my public key and I generated a new pair and gave it to him. Is it generally better to create a new pair for access to different systems or is it better to have one pair and reuse it to access different systems? Similarly, is it better to create two different pairs and use one to access our companies systems from home and the other one to access the systems from work, or is it better to just have one pair and use it from both places?

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• Linux iptables / conntrack performance issue

  - by tim

  I have a test-setup in the lab with 4 machines: 2 old P4 machines (t1, t2) 1 Xeon 5420 DP 2.5 GHz 8 GB RAM (t3) Intel e1000 1 Xeon 5420 DP 2.5 GHz 8 GB RAM (t4) Intel e1000 to test linux firewall performance since we got bitten by a number of syn-flood attacks in the last months. All machines run Ubuntu 12.04 64bit. t1, t2, t3 are interconnected through an 1GB/s switch, t4 is connected to t3 via an extra interface. So t3 simulates the firewall, t4 is the target, t1,t2 play the attackers generating a packetstorm thorugh (192.168.4.199 is t4): hping3 -I eth1 --rand-source --syn --flood 192.168.4.199 -p 80 t4 drops all incoming packets to avoid confusion with gateways, performance issues of t4 etc. I watch the packet stats in iptraf. I have configured the firewall (t3) as follows: stock 3.2.0-31-generic #50-Ubuntu SMP kernel rhash_entries=33554432 as kernel parameter sysctl as follows: net.ipv4.ip_forward = 1 net.ipv4.route.gc_elasticity = 2 net.ipv4.route.gc_timeout = 1 net.ipv4.route.gc_interval = 5 net.ipv4.route.gc_min_interval_ms = 500 net.ipv4.route.gc_thresh = 2000000 net.ipv4.route.max_size = 20000000 (I have tweaked a lot to keep t3 running when t1+t2 are sending as many packets as possible). The result of this efforts are somewhat odd: t1+t2 manage to send each about 200k packets/s. t4 in the best case sees aroung 200k in total so half of the packets are lost. t3 is nearly unusable on console though packets are flowing through it (high numbers of soft-irqs) the route cache garbage collector is no way near to being predictable and in the default setting overwhelmed by very few packets/s (<50k packets/s) activating stateful iptables rules makes the packet rate arriving on t4 drop to around 100k packets/s, efectively losing more than 75% of the packets And this - here is my main concern - with two old P4 machines sending as many packets as they can - which means nearly everyone on the net should be capable of this. So here goes my question: Did I overlook some importand point in the config or in my test setup? Are there any alternatives for building firewall system especially on smp systems?

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• sharepoint crawl not indexing main site

  - by user22215

  Guys I'm having some strange search issues' going on with my main portal application. First off let me give you a little back ground on the problem web app. Our Sharepoint environment was originally set up by a consultant that did not follow best practices. She used one web app to house our companies' intranet site, ssp, and mysites. Since than I have provisioned a new ssp that I have segmented correctly I moved all of our other sites over to the new ssp with out any problems . However, I could not assign the main portal app to the new ssp since the portal app housed the ssp site collection. So I deleted the ssp site collection after that I deleted the ssp and assigned the portal app to my new ssp. Now this is where the problem starts when I attempt to crawl this application the crawl starts than stops 5 seconds later with a status of success also it reports that 1 item was successfully crawled. The funny thing is the main portal app has nearly 30000 items. I have tracked the problem down to the web app if I create a test web app than restore the content I have no problem crawling all 30000 items. Also all of my other web apps that use the same ssp have no problem completing crawls. I don't see anything in the ULS logs or server 2003's event viewer. Also I'm using a separate dedicated index server that's configured to crawl itself via host file configuration. I would like to fix this problem with out having to recreate our main portal site due to the fact that we have several custom code modifications where DLL's were registered to the IIS bin folder also I don't even want to get into the Silverlight mods that were done. Any help with this problem is much appreciated Same problem as minehttp://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/MS-SharePoint/Q_23885820.html

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• computer fails to boot during/after POST for five or six boots, then works

  - by N13

  For the last few days, my computer has had issues booting. I've seen two different behaviors: The screen displays the graphics card information, then begins to list the RAM, hard drives, etc. At different points in this process (after the graphics info), the computer shuts off. After five or six attempts, it then boots normally. In roughly the same time frame, the computer freezes, and fails to boot. I think it boots successfully on the next attempt. I've also noticed that in some instances, the computer freezes on shutdown. It gets right to the point where it should shut off, but doesn't. I recently combined the best parts of two different machines into this one. I'm booting to GRUB, with Ubuntu 12.04, Linux Mint 11 and Windows Vista (unfortunately) as my OS options. It has an Enermax Modu82+ 525W power supply, and I've used an online calculator to determine that my load shouldn't exceed 400W. I even unplugged a hard drive, but that didn't help. I found the latest BIOS, patched it and checked the settings, but that didn't fix it. I'm fairly certain this issue didn't exist at first, but might have started when the power at my new apartment dropped for a second. The machine is plugged into a surge protector strip, but it's old and I've heard they lose effectiveness with age. Is a power dip as damaging as a spike? If something were damaged, why would it boot successfully after five or six attempts? It's almost like the BIOS or PSU need to be primed. The trouble with debugging is that there seems to be a "grace period" after shutdown where the issue doesn't present itself again. What should I try next?

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• nVidia performance with newer X and newer driver abysmal with Compiz

  - by Nakedible

  I recently upgraded Debian to Xorg 2.9.4 and installed nvidia-glx from experimental, version 260.19.21. This was somewhat of an uphill battle as the dependencies for the experimental nvidia-glx package are still somewhat broken. I got it to work without forcing the installation of any packages and without modifying the packages. However, after the upgrade compiz performance has been abysmal. I am using the desktop wall plugin and switching viewports is really slow - takes a few seconds for each switch. In addition to this, every effect that compiz does, such as zoom animations for icons when launching applications, takes seconds. The viewport switching speed changes relative to the amount of windows on that virtual screen - empty screens switch almost at normal speed, single browser windows work almost decently, but just 4 rxvt terminals slows the switches down to a crawl. My compiz configuration should be pretty basic. Xorg is likewise configured without anything special - the only "custom" configuration is forcing the driver name to be "nvidia". I've fiddled around with the nvidia-settings and compizconfig trying different VSync settings, but none of those helped. My graphics card is: NVIDIA GPU NVS 3100M (GT218) at PCI:1:0:0 (GPU-0). This is laptop GPU that is from the Geforce GTX 200 series. Graphics card performance should naturally be no problem. EDIT: In the end, nothing really worked, and I got really annoyed with the state of compiz and its support in Debian. Many nVidia driver revisions have passed and I am using Gnome 3 now, so I am accepting the best answers to this question even though the issue was not resolved.

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• Possible attack on my SQL server?

  - by erizias

  Checking my SQL Server log I see several entries like this: Date: 08-11-2011 11:40:42 Source: Logon Message: Login failed for user 'sa'. Reason: Password did not match for the login provided. [CLIENT: 56.60.156.50] Date: 08-11-2011 11:40:42 Source: Logon Message: Error: 18456. Severity: 14. State: 8. Date: 08-11-2011 11:40:41 Source: Logon Message: Login failed for user 'sa'. Reason: Password did not match for the login provided. [CLIENT: 56.60.156.50] Date: 08-11-2011 11:40:41 Source: Logon Message: Error: 18456. Severity: 14. State: 8. And so on.. Is this a possible attack on my SQL Server from the chineese???! I looked up the IP adress, at ip-lookup.net which stated it was chineese. And what to do? - Block the IP adress in the firewall? - Delete the user sa? And how do I protect my web server the best?! :) Thanks in advance!

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• Installing Visual Studio Express on Windows 8.1

  - by robrene

  I've been trying to install the latest version of Microsoft Visual Studio Express from their website to toy around with the IDE and C# development in general. I have a relatively fresh and completely vanilla installation of Windows 8.1 Professional x64 for this purpose. I come from a Linux background, where installing software (especially software distributed by the maintainer of the OS) is usually done with package managers. First, I tried to look for Visual Studio in the Windows 8 Store. There was one entry, but it did not have an installation button. Instead, it redirected me to their website. From all the products listed under the "Download" section on their website, I decided Visual Studio 2013 Express for Windows Desktop was the best for me. I selected it and clicked on "Install now". An installer program downloaded, and I'm assuming that the installer downloaded the necessary files as it was running. When it was done, it asked for a reboot, to which I obliged. However, I can't seem to find the IDE installed anywhere? It doesn't show up anywhere in the Start menu interface. I can't find any executables that look like they might be the IDE in its installation folder. Running the installer again and selecting "Repair" does download some files, but after its requested reboot, nothing has changed. The only thing that I can find is an advertisement link to "Try other Visual Studio 2013 Products" in my start menu. I suppose my question is what I have to do to run Visual Studio 2013 Express on Windows 8.1? Am I not looking in the right places? Am I doing the installation process wrong? Thanks in advance

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• Good HTTP Monitoring tools

  - by ffffff

  I look for HTTP to work with a Linux system server monitor tool every protocol. I know, and will not there be it in whom or a freeware? When, for example, I dump 80/tcp with a packet monitor to be concrete # tethereal -i ppp0 port 80 -x Capturing on ppp0 1244206390.030474 219.111.xx.xx -> 74.125.xx.xx HTTP GET /search?output=js&num=0&dt=1244206414703&client=pub-3031568651010206&q=Cagliari%20Flight&ad=n3&ie=utf8&oe=utf8&channel=0091594208&adtest=off HTTP/1.1 0000 00 04 02 00 00 00 00 00 00 00 00 00 00 00 08 00 ................ 0010 45 00 01 e5 ee 82 40 00 40 06 d2 b5 db 6f 02 5b E.....@[email protected].[ 0020 4a 7d 4f 93 d4 29 00 50 3e df 4c 63 4b 6b 42 e0 J}O..).P>.LcKkB Such output is provided, but there is too much unnecessary information such as an SYN packet or a header. What I want The IP address of the client and sending out character string(Get; the contents of the POST) Among the output character string of the server only as for the HTML (Content-Type:) I am what is chisel) of a thing of text/html. I can set a filter and am the best if only information wanting can accumulate in the log.

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• 1080p monitor: connected through VGA - perfect, HDMI - awful

  - by develroot

  When I connect my 23" monitor (1920x1080) to my pc through HDMI, I encourage some problems. It's not full screen That's it. There are ~1cm black borders on right and left side and ~0,5cm black borders on the top and the bottom of the monitor. That's pretty frustrating. I tried adjusting overscan, but I can't mannualy type the % of overscan that I need. I can only select between ex. 8 and 10% in AMD Vision Engine Control center, but what I need is 9%. Next, even if i select 10% and the image fits all the corners, but after log off all the settings are lost and I have to do it again and again. Text, images, everything looks blurry That surprised me a lot. Should'nt HDMI quality be better than VGA's one? When connected through HDMI, the text isn't readable. It's like a very low refresh rate, although i'm running at 60Hz. Also the text has something like little shadows, very very annoying. Are there any tips to get the same quality as with VGA, with HDMI ? (running on integrated ATI Radeon HD4200, which, appearently, is the best card I have ever seen in terms of integrated ones)

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• Correct use of SMTP "Sender" header?

  - by Eric Rath

  Our web application sends email messages to people when someone posts new content. Both sender and recipient have opted into receiving email messages from our application. When preparing such a message, we set the following SMTP headers: FROM: [email protected] TO: [email protected] SENDER: [email protected] We chose to use the author's email address in the FROM header in an attempt to provide the best experience for the recipient; when they see the message in their mail client, the author is clear. To avoid the appearance of spoofing, we added the SENDER header (with our own company email address) to make it clear that we sent the message on the author's behalf. After reading RFCs 822 and 2822, this seems to be an intended use of the sender header. Most receiving mail servers seem to handle this well; the email message is delivered normally (assuming the recipient mailbox exists, is not over quota, etc). However, when sending a message FROM an address in a domain TO an address in the same domain, some receiving domains reject the messages with a response like: 571 incorrect IP - psmtp (in reply to RCPT TO command) I think this means the receiving server only saw that the FROM header address was in its own domain, and that the message originated from a server it didn't consider authorized to send messages for that domain. In other words, the receiving server ignored the SENDER header. We have a workaround in place: the webapp keeps a list of such domains that seem to ignore the SENDER header, and when the FROM and TO headers are both in such a domain, it sets the FROM header to our own email address instead. But this list requires maintenance. Is there a better way to achieve the desired experience? We'd like to be a "good citizen" of the net, and all parties involved -- senders and recipients -- want to participate and receive these messages. One alternative is to always use our company email address in the FROM header, and prepend the author's name/address to the subject, but this seems a little clumsy.

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• Recommend a UK based VPS host equivalent to Dreamhost [closed]

  - by Pez Cuckow

  I appreciate this question could be considered subjective and argumentative so can people make recommendations rather than arguing about the best. I believe the "correct" answer is the one closest to what I am looking for. Basically I live in the UK but have been using the US based Dreamhost for about 6 years now, and my web projects are getting to the scale where the websites need to the UK based to cope with the demand and load. I originally had shared hosting with Dreamhost but upgraded to a VPS a while ago, getting 512mb of RAM, unlimited disk space, bandwidth and domains for $30. Their control panel is a custom easy to use build that they have created in house and offers features very similar to other web panels (as far as I am aware). So basically my question boils down to, is there anywhere that offers an equivalent package? In all honesty as long as I have over 50gb HDD space and unlimited domains it doesn't really matter? Are there any VPS providers you would recommend as reliable? I promise to check every link posted, many thanks for your time!

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• Backing up a Windos 7 partition from Macbook with no OS X

  - by mattcodes

  I have a 3 year macbook with Windows 7 installed as 40gb and OS X as 40gb (80gb HD). I want to remove OS X as Im at the limit of 40gb on Windows and I have not logged on to Mac OS X since installed Win7 (dont flame me). So I want to delete OS X partition and expand my win partition to 80gb BUT I still would like to be able to regularly (once a week/month) backup my Windows 7 partition - its took a while to setup everything up right - not just docs and programs - so when the hard drive dies I want to be able to restore the partition and boot away, (the daily volatile bits I can pull down from dropbox and project from soure control). With Mac OS X I could use Winclone - and this worked flawless last time the HD failed with XP but with the absence of OS X I will need something else. Im thinking can I use a Linux Live boot CD along with an external USB hard drive. Boot from CD and then dd? the partition to the USB? What linux distro live CD should I use? I say dd as if I know what am taking about (I dont) is this the best way to backup a partition (when it will be restored to same hardware as bootable) ? What command?

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• Replacing the LCD panel in a netbook (Asus Eee PC 1005)

  - by neilfein

  Yesterday, I was cleaning up and dropped my Asus Eee 1005PE. The screen is cracked inside (i.e., cracks are visible only when on), and no longer works properly. I booted up with another monitor attached, and the computer itself is fine, but needs a new screen. Best Buy wants at least $250 to repair it (that includes their $150 fee to breathe in the same room as the unit), and Asus was of no help at all. (They're incredibly cagey and won't provide any money numbers at all, not even the cost of the part.) If replacing the LCD is no more trouble than replacing memory or a hard drive, I can do that. It's within my means to buy the part (18G241010402, a TFT LCD), but I'd like to know more about the procedure involved. My question: How does one replace the screen in this unit? Do I simply open the case and swap out the unit, or do I need to disassemble anything else to get to the screen? I don't want to order the part and then end up in a situation like this. Is the case screwed shut, or is it like an iPod where they glue things closed? I know enough about my abilities with a soldering gun to not attempt to solder tiny wires, would any of that be involved?

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• Dual DC Time Service

  - by poconnor

  I believe I'm having an issue with my Domain Controllers and Time Server. On my back up DC, I keep seeing a warning stating "The time service has stopped advertising as a time source because the local clock is not synchronized." Does this mean that my backup DC believes it's a Time Server? My PDC should be the time server and I have gone through setting up the PDC as the time server. I was not around for the original setup of the time server with the old PDC and Backup DC. But I believe the old PDC was the time server so I setup the new PDC as the new time server, when I decommissioned the old PDC. Is it possible that the Backup DC was setup as the time server and it still thinks it's suppose to be giving out time to everyone? Registry for PDC has NTP Registry for Backup has NT5D5 Results of w32tm /monitor Getting AD DC list for default domain... Analyzing:delayoffset from DC1.local..com Stratum: 4 delayoffset from DC1.local..com Stratum: 3 Warning: Reverse name resolution is best effort. It may not be correct since RefID field in time packets differs across NTP implementations and may not be using IP addresses. DC2.local..com[192.168.1.8:123]: ICMP: 1ms NTP: -0.6349491s RefID: DC1.local..com [192.168.1.9] DC1.local..com *** PDC ***[192.168.1.9:123]: ICMP: 0ms NTP: +0.0000000s RefID: wwwco1test12.microsoft.com [65.55.21.20]

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• Is Ubuntu a bad distro for a standalone mysql database server?

  - by DhruvPathak

  I read an article here : http://www.mysqlperformanceblog.com/2011/12/08/which-linux-distribution-for-mysql-server/ On the other end there are Debian and Ubuntu. Both use tool called dpkg for package management. There isn’t a month that I log in to a system based on either distribution where there are no issues with packages consistency. Unfinished installations, unresolved conflicts are so common that it’s just beyond simple negligence. The packaging system is just not robust enough. Another problem is that one broken package may block you from installing or uninstalling anything else. Imagine that someone left system in such shape, you prepared for downtime, stopped MySQL and… error – text editor has not been properly installed, so you cannot upgrade MySQL either until the problem is fixed. In a stressful situation when downtime clock ticks – annoying at best We prefer Ubuntu server because of familiarity and Ubuntu also being development environment. Questions: Is Ubuntu used commonly in production for a mysql database server ? Is it worth the trouble ever to have one distro eg Ubuntu in web server, and another say Red Hat in database server ? Or Is a homogenous server pool a better choice ?

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• Need advice in setting up server. fastCGI, suExec, speed, security, etc.

  - by lewisqic

  I am running my own dedicated server with centOS 5 and WHM/cPanel. I would like to configure my server to meet my needs but I need a little help. It will only be my own websites being run on this server. I'm still a little green when it comes to server administration so please forgive my ignorance. What I Would Like to Have: I need some public directories to be writable (for user image uploads and things like that) but I don't want those directories to have 777 permissions. I need individual accounts to have the ability to set custom php settings for their own account without affecting other accounts, whether through a php.ini file or through .htaccess or any other method. I would like things to run as fast as possible, whether that means using a php optimizer or cacher, such as eaccelerator or xcache or anything else. I need things to be as secure as possible. Here Are My Questions What should I use for my php handler? DSO? CGI? fastCGI? suPHP? Other? Should I be using suEXEC? What are the benefits or downfalls of this? What php optimizer/cacher is best to use? Are there any other security tips I need to know about all of this? I'd appreciate any advice or direction that can be offered. Thanks!

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• A web app provider has asked for specific browser config

  - by Matthew

  They have asks to turn off caching on our browsers. I was aghast that they would ask such a thing. I said to them; To avoid caching it is best practice to use; <meta http-equiv="pragma" content="no-cache" /> <meta http-equiv="cache-control" content="no-cache" /> This should work across all browsers. Their reply was; We need to refresh javascript at runtime, this will not help us – any more ideas? I replied; Unsure what you mean by “refresh javascript at runtime”. If you are using ajax, browser caching can effect the XMLHttpRequest open method. Adding these meta tags to the source has fixed this for me in the past. Browser caching only caches resources, it should have no effect on site scripting. These meta tags will bypass browser caching. This is a reasonable request, isn't it?

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