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• How do I troubleshoot root cause of a hung windows (2003) server?

  - by GregW

  I have a pair of Windows (2003 Server) servers both running MS SQL Server (2008 EE) that each hang every few months. This has been occurring intermittently :( for the past 15 months pretty much since we started using the servers. The symptoms are as-follows: I cannot remote desktop in to troubleshoot; when I attempt to, I get stuck on a blank black screen and am never offered a login prompt I can still ping the servers I can still open a SQL connection to the server, and, CURIOUSLY/BIZARRELY, when I do a "select getdate()", the time it returns appears to be stuck on the exact fraction of a second when (I presume) the server hung. Repeated attempts to do "select getdate()" keep getting that same date, suggesting that the clock is frozen. Filesharing attempts to connect to the hung server fail with the error message: "\ServerName is not accessible. You might not have permissions to use this network resource. Contact the administrator of this server to find out if you have access permissions. The server's clock is not synchronized with the primary domain controller's clock." This is consistent with a frozen clock. Post-reboot, if I investigate the Windows Event Viewer logs, I can see many security accesses (coming from me and others) that I recognize were login attempts during the "down" period, but all of them in the security log are associated with that same timestamp of when the server hung. This also suggests the clock is frozen. There is not a clear cause in the Application or System event logs. I have a local Admin account on the server and am in the process of getting a domain-credentialed Admin account for better remote admin access. HP is supposed to be supporting these machines and has some low-level ILO2 access but they seem incapable of finding the root cause. A reboot will "fix" the problem but I would like to get to the root cause and solve the issue. Has anyone ever seen something like this odd clock behavior?! (If it were just one server I'd perhaps say a bad hardware clock, but two?) Can anyone advise me on what I should try to troubleshoot this sort of situation to find the root cause (or what I should tell HP to try?)

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• Areca 1280ml RAID6 volume set failed

  - by Richard

  Today we hit some kind of worst case scenario and are open to any kind of good ideas. Here is our problem: We are using several dedicated storage servers to host our virtual machines. Before I continue, here are the specs: Dedicated Server Machine Areca 1280ml RAID controller, Firmware 1.49 12x Samsung 1TB HDDs We configured one RAID6-set with 10 discs that contains one logical volume. We have two hot spares in the system. Today one HDD failed. This happens from time to time, so we replaced it. Upon rebuilding a second disc failed. Normally this is no fun. We stopped heavy IO-operations to ensure a stable RAID rebuild. Sadly the hot-spare disc failed while rebuilding and the whole thing stopped. Now we have the following situation: The controller says that the raid set is rebuilding The controller says that the volume failed It is a RAID 6 system and two discs failed, so the data has to be intact, but we cannot bring the volume online again to access the data. While searching we found the following leads. I don't know whether they are good or bad: Mirroring all the discs to a second set of drives. So we would have the possibility to try different things without loosing more than we already have. Trying to rebuild the array in R-Studio. But we have no real experience with the software. Pulling all drives, rebooting the system, changing into the areca controller bios, reinserting the HDDs one-by-one. Some people are saying that the brought the system online by this. Some are saying that the effect is zero. Some say, that they blew the whole thing. Using undocumented areca commands like "rescue" or "LeVel2ReScUe". Contacting a computer forensics service. But whoa... primary estimates by phone exceeded 20.000€. That's why we would kindly ask for help. Maybe we are missing the obvious? And yes of course, we have backups. But some systems lost one week of data, thats why we'd like to get the system up and running again. Any help, suggestions and questions are more than welcome.

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• Bash-Scripting - Munin Plugin don't work

  - by FTV Admin

  i have written a munin-plugin to count the http-statuscodes of lighttpd. The script: #!/bin/bash ###################################### # Munin-Script: Lighttpd-Statuscodes # ###################################### ##Config # path to lighttpd access.log LIGHTTPD_ACCESS_LOG_PATH="/var/log/lighttpd/access.log" # rows to parse in logfile (higher value incrase time to run plugin. if value to low you may get bad counting) LOG_ROWS="200000" # #munin case $1 in autoconf) # check config AVAILABLE=`ls $LIGHTTPD_ACCESS_LOG_PATH` if [ "$AVAILABLE" = "$LIGHTTPD_ACCESS_LOG_PATH" ]; then echo "yes" else echo "No: "$AVAILABLE echo "Please check your config!" fi exit 0;; config) # graph config cat <<'EOM' graph_title Lighhtpd Statuscodes graph_vlabel http-statuscodes / min graph_category lighttpd 1xx.label 1xx 2xx.label 2xx 3xx.label 3xx 4xx.label 4xx 5xx.label 5xx EOM exit 0;; esac ## calculate AVAILABLE=`ls $LIGHTTPD_ACCESS_LOG_PATH` if [ "$AVAILABLE" = "$LIGHTTPD_ACCESS_LOG_PATH" ]; then TIME_NOW=`date` CODE_1xx="0" CODE_2xx="0" CODE_3xx="0" CODE_4xx="0" CODE_5xx="0" for i in 1 2 3 4 5; do TIME5=`date +%d/%b/%Y:%k:%M --date "$TIME_NOW -"$i"min"` CODE_1xx=$(( $CODE_1xx + `tail -n $LOG_ROWS $LIGHTTPD_ACCESS_LOG_PATH | grep "$TIME5" | grep 'HTTP/1.1" 1' | grep -c " "` )) CODE_2xx=$(( $CODE_2xx + `tail -n $LOG_ROWS $LIGHTTPD_ACCESS_LOG_PATH | grep "$TIME5" | grep 'HTTP/1.1" 2' | grep -c " "` )) CODE_3xx=$(( $CODE_3xx + `tail -n $LOG_ROWS $LIGHTTPD_ACCESS_LOG_PATH | grep "$TIME5" | grep 'HTTP/1.1" 3' | grep -c " "` )) CODE_4xx=$(( $CODE_4xx + `tail -n $LOG_ROWS $LIGHTTPD_ACCESS_LOG_PATH | grep "$TIME5" | grep 'HTTP/1.1" 4' | grep -c " "` )) CODE_5xx=$(( $CODE_5xx + `tail -n $LOG_ROWS $LIGHTTPD_ACCESS_LOG_PATH | grep "$TIME5" | grep 'HTTP/1.1" 5' | grep -c " "` )) done CODE_1xx=$(( $CODE_1xx / 5 )) CODE_2xx=$(( $CODE_2xx / 5 )) CODE_3xx=$(( $CODE_3xx / 5 )) CODE_4xx=$(( $CODE_4xx / 5 )) CODE_5xx=$(( $CODE_5xx / 5 )) echo "1xx.value "$CODE_1xx echo "2xx.value "$CODE_2xx echo "3xx.value "$CODE_3xx echo "4xx.value "$CODE_4xx echo "5xx.value "$CODE_5xx else echo "1xx.value U" echo "2xx.value U" echo "3xx.value U" echo "4xx.value U" echo "5xx.value U" fi If i run the script on local machine it runs perfectly: root@server1 /etc/munin/plugins # ll lrwxrwxrwx 1 root root 45 2011-12-19 15:23 lighttpd_statuscodes -> /usr/share/munin/plugins/lighttpd_statuscodes* root@server1 /etc/munin/plugins # ./lighttpd_statuscodes autoconf yes root@server1 /etc/munin/plugins # ./lighttpd_statuscodes config graph_title Lighhtpd Statuscodes graph_vlabel http-statuscodes / min graph_category lighttpd 1xx.label 1xx 2xx.label 2xx 3xx.label 3xx 4xx.label 4xx 5xx.label 5xx root@server1 /etc/munin/plugins #./lighttpd_statuscodes 1xx.value 0 2xx.value 5834 3xx.value 1892 4xx.value 0 5xx.value 0 But Munin shows no graph: http://s1.directupload.net/images/111219/3psgq3vb.jpg I have tested the Plugin from munin-server via telnet: root@munin-server /etc/munin/plugins/ # telnet 123.123.123.123 4949 Trying 123.123.123.123... Connected to 123.123.123.123. Escape character is '^]'. # munin node at server1.cluster1 fetch lighttpd_statuscodes 1xx.value U 2xx.value U 3xx.value U 4xx.value U 5xx.value U . Connection closed by foreign host. You can see in the script that value = U only printed, when the script can't check the lighttpd's access.log. But why can't script do it, when running via munin, and when running on local machine all is ok? Is there a bug in my bash-script? I have no Idea. Thanks for helping!

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• Why did my flash drive become "read only" and (how) can I fix it?

  - by Bob

  I have a brand new flash drive (one week old) that has become marked as read only, by Windows, Kubuntu and a bootable partitioner. Why did this happen? Is it fixable? If it is, how can I fix this? The problem Firstly, this drive is new. It's certainly not been used enough to die from normal wear and tear, though I would not discount defective components. The drive itself has somehow become locked in a read only state. Windows' Disk management: Diskpart: Generic Flash Disk USB Device Disk ID: 33FA33FA Type : USB Status : Online Path : 0 Target : 0 LUN ID : 0 Location Path : UNAVAILABLE Current Read-only State : Yes Read-only : No Boot Disk : No Pagefile Disk : No Hibernation File Disk : No Crashdump Disk : No Clustered Disk : No What really confuses me is Current Read-only State : Yes and Read-only : No. Attempted solutions So far, I've tried: Formatting it in Windows (in Disk management, the format options are greyed out when right clicking). DiskPart Clean (CLEAN - Clear the configuration information, or all information, off the disk.): DISKPART> clean DiskPart has encountered an error: The media is write protected. See the System Event Log for more information. There was nothing in the event log. Windows command line format >format G: Insert new disk for drive G: and press ENTER when ready... The type of the file system is FAT32. Verifying 7740M Cannot format. This volume is write protected. Windows chkdsk: see below for details Kubuntu fsck (through VirtualBox USB passthrough): see below for details Acronis True Image to format, to convert to GPT, to destroy and rebuild MBR, basically anything: failed (could not write to MBR) Details (and a nice story) Background This was a brand new, generic, 8GB flash drive I wanted to create a multiboot flash drive with. It came formatted as FAT32, though oddly a little larger than most 8 GIGAbyte flash drives I've come across. Approximately 127MB was listed as "used" by Windows. I never discovered why. The end usable space was about what I normally expect from a 8GB drive (approx 7.4 GIBIbytes). I had thrown quite a few Linux distros on, along with a copy of Hiren's. They would all boot perfectly. They were put on with YUMI. When I tried to put the Knoppix DVD on, YUMI added an odd video option to its boot comman which caused Knoppix to boot with a black screen on X. ttys 1 through 6 still worked as text only interfaces. A few days later, I took some time to take that odd video option off, making the boot command match the one that comes with Knoppix. On the attempt to boot, Knoppix reported some form of LZMA corruption. Leading up to the current issue I was thinking the Knoppix files may have been corrupted somehow, so I tried reloading it. The drive was nearly full (45MB free), so I deleted a generic ISO that also was not booting. That went fine. I then went through YUMI to 'uninstall' Knoppix, i.e. delete files and remove from the menus. The files went first, then the menus were cleared successfully. However, the free space was stuck at about 700MB, same as it was before removing Knoppix. In the old Knoppix folder, there was a 0 byte file named KNOPPIX that could not be deleted. I tried reinserting the drive to delete this file - without safely removing, if that made a difference (hey, first time for everything). Running the standard Windows chkdsk scan without /r or /f reported errors found. Running with /r just got it stuck. I decided to give fsck a shot, so I loaded up my Kubuntu VM and attached the drive to it with VirtualBox's USB 2.0 passthrough. I umounted it (/dev/sda1) and ran a fsck. There are differences between boot sector and its backup. I chose No action. It told me FATs differ and asked me to select either the first or second FAT. Whichever I selected, I got a notice of Free cluster summary wrong. If I chose Correct, it gave a list of incorrect file names. To try to fix something, at least, I ran it with the -p option. Halfway through fixing the files, the VM froze - I ended its process about ten minutes later. Cause? My next attempt was to use YUMI, again, to rebuild the whole drive. I used YUMI's built in reformat (to FAT32) option and installed a Kubuntu ISO (700MB). The format was successful, however, the extract and copy of Kubuntu (which YUMI uses a 7zip binary for) froze at about 60% done. After waiting for about fifteen minutes (longer than the 3.5GB Knoppix ISO took last time), I pulled the drive out. The drive at this point was already formatted, SYSLINUX already installed, just waiting on the unpacking of an ISO and the modifying of the boot menus. Plugging it back in, it came up as normal - however, any write action would fail. Disk management reported it as read only. On reconnect, it would come up as normal but a write operation would cause it to go read only again. After a few attempts, it started coming up as read only on insertion. Attempts to fix This is when I ran through the attempts listed above, to try and reformat it in case of a faulty format. However the inability to do so even on a bootable disk indicated something more serious is wrong. chkdsk now reports nothing is wrong, and fsck still reports MBR inconsistencies, but now always chooses first FAT automatically after telling me FATs differ. It still does the same Free cluster summary wrong afterwards. I cannot run with -p anymore because it is now marked as read only. It also managed to corrupt my VM's disk somehow on the first attempt (yes, I'm sure I chose sda, which is mapped to a 7.4GB drive - I triple checked). Thank god for snapshots? I'm just about out of ideas. To my inexperienced mind it looks like something in the drive's firmware set it to read only "permanently" somehow - is there any way to reset this? I don't particularly care about keeping data, considering I've reformatted it twice. Also, fixes that keep me in Windows are better; it reduces the risk of me accidentally nuking my main hard drive. Update 1: I pulled apart the drive out of curiosity. As you can see, there are no obvious write protect switches. There is an IC on the other side, ALCOR branded labelled AU6989HL, if that matters. If there appears to be no way to fix this, I'll probably pull out the (glued down) card and put it in a card reader to check if it's the card or the controller that died. Update 2: I've pulled the card off, Windows detects the drive as a card reader now. The contacts on the card don't appear to be used, and there are several rows of holes on the card itself. Putting it into the card reader only detects about 30MB total, RAW. It's probably either the reader incorrectly reporting the card as faulty (as if a real SD card's write protect was switched on) or a bad contact somewhere. If nothing else, I have a spare 8GB Micro SD card now... as soon as I figure out how to format it as 8GB.

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• Looking for a new backup solution to replace dying tape drive

  - by E3 Group

  We're running Windows Server 2003 SBS and another machine with Server 2003 Standard on it. The SBS server is about 7 years old running pretty much 24/7 - a HP server of some description. We have an Ultrium 448 cycling LTO2 400GB tapes daily and incrementally backing up approximately 100gb worth of data (20gb C:\ and system state, 40gb exchange, 40gb database for some crap marketing software) on BackupExec 10D. As of 5 months ago, the backups have been consistently failing with IO errors, bad reads and some write errors. When I say consistent, I mean every time and we haven't had a proper backup for the entire 5 months - So if the server explodes tomorrow, 7 years worth of data will just cease to exist. I've only just recently rejoined the company and am looking at rectifying the more concerning problems, so the first thing I did was try a backup to an USB2.0 external drive. It was excruciatingly slow. In fact it was so slow it took 40 hours and it still wasn't finished. I ended up cancelling it and reconfiguring the selections again to reduce file size. This, however, isn't a permanent solution. I concluded that the IO error was either from a faulty tape drive (which has a tape stuck in there right now and not coming out) or from a dying SCSI controller. Neither of them are good news and both are extremely expensive to fix. I'm operating on an extremely low budget so have been looking at outsourcing the backups. A company in Sydney (where I'm located) offer incremental online backups via a NAS. It costs almost double a new tape drive but offers monthly repayments which will let us get through times when cash flow is minimal. It seems like a sweet deal but it is still a little bit pricey. So I'm looking for a cheaper, yet reliable solution. Maybe some in-house NAS or something offsite? The idea is to avoid using tapes. Are there any recommendations for rectifying my current situation? Or are tapes the only way to go? I'm concerned that the server will die one day in the near future and I must be able to restore it to another server with different hardware.

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• How might I stop BACKSCATTER using Qmail?

  - by alecb

  New to ServerFault , please pardon if my details are too much Linux box acting as Virtual Host for domain hosting. Runs CentOs. Runs Parallels Plesk 9.x Regardless of the following, the SPAM keeps flowing in at 1-3 / second. An explanation of the problem... "xinetd service listens for SMTP connections and forwards to qmail-smtpd. The qmail service only process the queue, but does not control messages coming into the queue...that's why stopping it has no effect. If you stop xinetd AND qmail, then kill any open qmail-smtpd processes, all mail flow comes to a stop SOMETIMES Problem is, qmail-smtpd is not smart enough to check for valid mailboxes on the localhost before accepting the mail. So, it accepts bad mail with a forged replyto address which gets processed in the queue by qmail. Qmail cannot deliver locally and bounces to the forged replyto address." We believe the fix is to patch the qmail-smtpd process to give it the intelligence to check for the existence of local mailboxes BEFORE accepting the message. The problem is when we try to compile the chkuser patch we run into failures due to Plesk Control Panel." Is anyone aware of something we could do differently or better?" Other things that have NOT worked thus far: -Turning off any and all mail processes (to check as an indicator that an individual account has been compromised. This has been verified as NOT the case.) -Turning off mail AND http server processes (in the case of a compromised formmail) -Running EXIM in lieu of Qmail( easy/quick install but xinetd forces exim to close and restarts qmail on its own) -Turned on SPF protection via Plesk GUI. Does not help. -Turned on Greylisting via Plesk GUI. Does not help. -Disabled Bounce notifications via command line That which MIGHT work but have complications: -Use POSTFIX instead of QMAIL (No knowledge of POSTIFX and don't want to bother with it unless anyone knows it has potential to handle backscatter WELL before investing time) -As mentioned above, compiling a chkusr patch, we believe will STOP this problem, along with qmail (because of plesk in the mix, the comile fails every time and Parallels Plesk support is unresponsive unless I cough up MONEY) If I don't clear out the SPAM from the outgoing mail queue nightly, then it clogs up with millions of SPAMs and will bring down the OUTGOING email services. Any and all help welcome and appreciated!

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• File/folder permissions and groups on Linux with Apache

  - by phobia

  I'm trying to learn about permissions on linux webserver with apache. Some clues to the system: The server I have to play around with is Fedora based. Apache runs as apache:apache. To allow for e.g. php to write to a file the file needs to be chmod 777. 755 is not sufficiant. What I'm wondering is basically how set up permissions like they should be on e.g. a "shared web host". My main problem is that if I set a permission so that one user cannot access anothers home folder, then apache can't read from the public_html folder either. To keep the users out I need to set chmod 700. But to let apache to read I need to have at least execute on world, so a 701 basically works, but won't let some users in. So I'm really stuck on what to do. Have been concidering adding the apache user to the frous grours below to avoid having to add the world execute flag, but is that a bad thing? Should it be the other way around, the users in the groups below should also be in the apache group? I was aiming at having 4 groups: 1. webapp same as dev_int, but is the only one that can go inside the webapp/live folder to e.g. do an update from the repo. 2. dev_int can read,write and execute everything in the "web root", including the two below, but nothing outside of the web root 3. dev_ext can read write and execute in all client folders, but cannot access anything outside of the webapp root 4. clientsBasic ftp accounts. Has a home folder with a public_html, but cannot access any other home folders An example of folder structure: webroot    no users in the aforementioned groups can go outside of here some_project    :dev_int only webapp live    :webapp only staging    :dev_int and :dev_ext clients    :dev_int and :dev_ext client_1    :dev_int, :dev_ext and client1:clients public_html dev developer_1    developer_1:dev_int OR :dev_ext public_html

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• SMTP host name vs. domain in "From:" address vis-a-vis Email Deliverability

  - by Jared Duncan

  I'm trying to implement (or make sure that I'm correctly following) email sending best practices to improve deliverability, but the role of the smtp server's host name vs the domain name of the From: email address seems to be unclear, even after reading dozens of people's articles/input. Specifically, I understand that to satisfy the reverse DNS check, there must be a PTR record for the IP address of the sending machine that yields a domain name that matches the host name of the sending machine / SMTP server. Some say it needs to match the one given by the "hostname" command, most say it's the one provided with the HELO / EHLO statement, and this guy even says they MUST be the same (according to / enforced by what, I don't know; that's only a minor point of confusion, anyhow). First, what I can't find anywhere is whether or not the domain name of the From: email address needs to match the domain name of the SMTP server. So in my case, I have a VPS with linode. It primarily hosts a particular domain of mine, example.com, but I also sometimes do work on other projects: foo.com and bar.com. So what I'm wondering is if I can just leave the default linode PTR record (which resolves to abc.def.linode.com), make sure that abc.def.linode.com is what my mail server (qmail) is configured to say at HELO, and then proceed to use it to send out emails for example.com, foo.com, et al. If so, then I am confused by the advice given here, specifically (in a listing of bad case scenarios): No SPF record for the domain being used in the HELO command Why would THAT domain need an SPF record? And if it does, which domain should it provide whitelisting for: the HELO domain, or the domain of the From: email address (envelope sender)? Also, which domain would need to accept mail sent to [email protected]? If the domains must be the same, that would seem rather limiting to me, because then for every domain you wanted to send email from, you'd have to get another IP address for it. It would also compromise or ruin one's ability to do non-email sending things (e.g. wget) relatively anonymously. However, the upside--if this is the case--is that it would make for a far less confusing setup. I'm currently using the linode.com SMTP+PTR domain and example.com From: address combination without much of any deliverability issue, but my volume is very low and I'd like to know if someone out there has experience with larger volumes and has specifically tested the difference and/or has inside knowledge and/or has an authoritative answer (and source) for this particular question. I'm happy to clarify anything, let me know. Thanks in advance.

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• Buying a new printer instead of replacing ink?

  - by Kelsey

  With prices of basic printers being around $40 - $50 and a ink cartridge being around $20 - $30 each for black AND color. It costs me more to replace the printer's ink than to just buy a brand new printer. This just seems like a total waste of materials though (I have 4 printers sitting in my basement with no ink). I know the ink cartridges are smaller (not as full) in a new printer but I go through it in about 1 to 1.5 years only and by then my $40 gets me a better printer to boot. Also with certain printers the heads are not part of the ink (Epson use to do this and still might) so I get new heads as well. Is this a bad practice? Are retailers making this a reality when they are selling working hardware cheaper than replacement parts? Is there something more I should be considering? Edit: Some background, long ago I bought an Epson printer which I used to print docs etc vary rarely. The ink started running low so I bought to new carts for around $60 if I recall. The printer then stopped working so I replaced the carts with the new ones but the head was dead on the black which was not worth repairing. I bought a new HP printer for $49. This lasted around 1.5yrs and then the ink ran out, I went to buy new carts and the guy at the store got me to buy a new printer (that was smaller, faster, higher dpi, etc) and it was cheaper than replacing the ink. When the ink ran out on that one I bought a new printer again, etc. The printer gets used maybe once a week at most and I never print photos or anything. It normally is jsut stored away unplugged accumulating dust. People say to buy a laser printer but they are much larger, do not print color, (in the price range I am looking at) and might have the exact same issues. The problem I see is the manufacturer is making my behaviour possible by selling new printers at a loss hoping that they will cash in on the ink later. How can they produce a printer for so cheap which HAS ink in it, and the refills cost more than the unit? It can't.

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• Looking for Fiddler2 help. connection to gateway refused? Just got rid of a virus

  - by John Mackey

  I use Fiddler2 for facebook game items, and it's been a great success. I accessed a website to download some dat files I needed. I think it was eshare, ziddu or megaupload, one of those. Anyway, even before the rar file had downloaded, I got this weird green shield in the bottom right hand corner of my computer. It said a Trojan was trying to access my computer, or something to that extent. It prompted me to click the shield to begin anti-virus scanning. It turns out this rogue program is called Antivirus System Pro and is pretty hard to get rid of. After discovering the rogue program, I tried using Fiddler and got the following error: [Fiddler] Connection to Gateway failed.Exception Text: No connection could be made because the target machine actively refused it 127.0.0.1:5555 I ended up purchasing SpyDoctor + Antivirus, which I'm told is designed specifically for getting rid of these types of programs. Anyway, I did a quick-scan last night with spydoctor and malware bytes. Malware picked up 2 files, and Spydoctor found 4. Most were insignificant, but it did find a worm called Worm.Alcra.F, which was labeled high-priority. I don’t know if that’s the Anti-Virus Pro or not, but SpyDoctor said it got rid of all of those successfully. I tried to run Fiddler again before leaving home, but was still getting the "gateway failed" error. Im using the newest version of firefox. When I initially set up the Fiddler 2.2.8.6, I couldn’t get it to run at first, so I found this faq on the internet that said I needed to go through ToolsOptionsSettings and set up an HTTP Proxy to 127.0.0.1 and my Port to 8888. Once I set that up and downloaded this fiddler helper as a firefox add-on, it worked fine. When I turn on fiddler, it automatically takes my proxy setting from no proxy (default) to the 127.0.0.1 with Port 8888 set up. It worked fine until my computer detected this virus. Anyway, hopefully I've given you sufficient information to offer me your best advice here. Like I said, Spydoctor says the bad stuff is gone, so maybe the rogue program made some type of change in my fiddler that I could just reset or uncheck or something like that? Or will I need to completely remove fiddler and those dat files and rar files I downloaded? Any help would be greatly appreciated. Thanks for your time.

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• Why does my mail get marked as spam?

  - by schoen

  I Have the server "afspraakmanager.be". It matches everything not to be a spam server.(it isn't by the way): it has reverse dns, spf,dkim,... . But hotmail marks it as spam. I think the problem is the SPF/DKIM records. when i sent an email to my gmail it says: "Received-SPF: neutral (google.com: 2a02:348:8e:6048::1 is neither permitted nor denied by best guess record for domain of [email protected]) client-ip=2a02:348:8e:6048::1; Authentication-Results: mx.google.com; spf=neutral (google.com: 2a02:348:8e:6048::1 is neither permitted nor denied by best guess record for domain of [email protected]) [email protected]; dkim=neutral (bad format) [email protected]" So i guess my SPF and DKIM records aren't set up right. But I also don't have a clue what is wrong with them. this is the zone file: ; zone file for afspraakmanager.be $ORIGIN afspraakmanager.be. $TTL 3600 @ 86400 IN SOA ns1.eurodns.com. hostmaster.eurodns.com. ( 2013102003 ; serial 86400 ; refresh 7200 ; retry 604800 ; expire 86400 ; minimum ) @ 86400 IN NS ns1.eurodns.com. @ 86400 IN NS ns2.eurodns.com. @ 86400 IN NS ns3.eurodns.com. @ 86400 IN NS ns4.eurodns.com. ; Mail Exchanger definition @ 600 IN MX 10 smtp ; IPv4 Address definition @ IN A 37.230.96.72 afspraakmanager.be 600 IN A 37.230.96.72 localhost 86400 IN A 127.0.0.1 smtp 600 IN A 37.230.96.72 www 600 IN A 37.230.96.72 ; Text definition default._domainkey 600 IN TXT "v=DKIM1\\; k=rsa\\; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC6pvlZKnbSVXg1Bf3MF2l8xRrKPmqIw2i9Rn1yZ3HEny9qH1vyGXUjdv2O0aQbd5YShSGjtg5H/GedRMLpB0Qb+hBj1yGofOQTdcVtZZfj8qBY5Z7vEkhvtdaogQ0vLjgcwhg0BBuTewEkLxrl9IIzkPMZ1SCtM2Y0RtiUhg2cjQIDAQAB" ; Sender Policy Framework definition afspraakmanager.be 600 IN SPF "v=spf1 a mx ptr +all" The DKIM signature in the header: DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=afspraakmanager.be; s=mail; t=1382361029; bh=4pDpXBY8rCbX8+MfrklZzpQxaUsa3vSPUYjcDR3KAnU=; h=Date:From:To:Subject:From; b=SoBBaAlrueD8qID8txl2SBSqnZgN2lkPCdSPI/m7/YLezIcBedkgIX1NswYiZFl6Z AmF8dES73WUaaJjItVHSrdCJK2mJ/Az+vrgNsyk+GqZZ1YPiIlH3gqRrsguhoofXUX /gqLlqsLxqxkKKd9EbSzKRHuDGlJCLm5SlL8wnL0=

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• PDF Corruption When Sending with Microsoft Products

  - by Winner

  I have the same PDF corruption problem in two different offices that I am the tech support for. Office 1: Started in the middle of December. PDF received from outside the office and is viewable with no problems. I have no control over how it is created. If it is forwarded to anyone else, the PDF is corrupted. I have forwarded it to multiple people in the office. I have tried viewing with Reader 8, 9, Sumatra and Fox IT. I have tried forwarding to Gmail and their viewer says it is corrupted. If I save the PDF and create a new email, it will be corrupted when sent using Outlook 2003, Outlook 2007, Microsoft Live Mail and Outlook Express. If I create the email using Thunderbird 3, Gmail or the webclient Iclient for IPSwitch IMail it will not be corrupted. I have confirmed the same results when using our IMail SMTP and also Using Gmail as the SMTP server. To be clear, if I created in Thunderbird, Gmail or Iclient and received on any of the MS products, it will be viewable. This office receives PDFs daily from multiple sources. There is only a small subset that are having this problem. So far they problem PDFs are from two different companies they deal with, but not all of the PDFs are bad. Office 2: PDFs are created by a management system. I'm not sure what engine is used to create them. Same exact same issues. At both offices, I noticed that the file size is wrong. One small PDF the proper file size is 12kb for the PDF when it's viewable, when it shows up corrupted it is only 8kb. We handle the email for both offices. Both are POP servers, not Exchange. IMail was updated after these issues start. I have tried different SMTP servers and it still seems to happen only when using Microsoft products to send. Anyone else having problems with PDFs getting corrupted? Any ideas how to find out a resolution?

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• My hosting server giving memory allocation error

  - by Usman

  I have hosted my website on shared hosting linux server. As there are atmost 10-15 visitors come to my website daily but My wordpress website most of the times gives 500 Internal Server Error. I accessed my server Error Log following error is showing: [Tue Dec 04 08:57:45 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:45 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:43 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:43 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:42 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:42 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:41 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:41 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:40 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:40 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:32 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:31 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:29 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:29 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:26 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php Is my hosting service really bad. And any solution. Thanks in advance.

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• Network use of Gaming PC

  - by Matthew Patrick Cashatt

  Background After YEARS of waiting, I built the custom gaming PC of my dreams: Intel i7 - 975 Extreme Edition 3.3ghz (overclocked to 4.0) ATI Radeon 5970 2gb Corsair 256 gb SSD Drive 2 TB Sata II 3.0 7200rpm data drive 12 GB Kingston Hyper-X (1600mhz) DDR3 Windows 7 Ultra 64 bit And so on. . . Problem I hooked this beast up to our home theater and settled in for a great gaming season only to realize a couple of drawbacks: It's hard to accurately wax bad guys using a keyboard in your lap whilst reclined on your couch (and using a wireless keyboard). It's hard to read the text on the screen (i.e. menus, etc). I find that a 1:1 ratio (screen diagonal inch to inch away from screen) is optimum, but using the home theater, it's more like 1:3 which has me squinting unless I sit on the coffee table. The wife always seems to want the TV the same time I do and, unfortunately "Real Housewives of Beverly Hills" and Battlefield BC don't mix. I am losing the battle in the home theater room, but the PC has to stay there (long story). So, this leaves me with the option of playing in my home office which is about 30 feet away from the home theater. I am a software developer so I have a pretty decent set up in my office--multiple 1080p monitors, HP Envy 17 which can run games like Crysis in 720p with out stammering too much. Also, I can game very comfortably at my desk in the office. Still, even though the set up in my office can run games well enough, I don't want to regress to that when I have worked YEARS for an awesome gaming PC that can run everything on ultra high settings. My Question What are my options for running my games on the beastly desktop in the Home Theater, but physically playing in my office about 30 feet away? A really long HDMI cable? LAN/RDC? Details that May Help We have an open crawlspace so running cable from HT room to office is no problem. I already have networked the house with a LAN Any help is GREATLY appreciated. Thanks, Matt

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• PPTP VPN Not Working - Peer failed CHAP authentication, PTY read or GRE write failed

  - by armani

  Brand-new install of CentOS 6.3. Followed this guide: http://www.members.optushome.com.au/~wskwok/poptop_ads_howto_1.htm And I got PPTPd running [v1.3.4]. I got the VPN to authenticate users against our Active Directory using winbind, smb, etc. All my tests to see if I'm still authenticated to the AD server pass ["kinit -V [email protected]", "smbclient", "wbinfo -t"]. VPN users were able to connect for like . . . an hour. I tried connecting from my Android phone using domain credentials and saw that I got an IP allocated for internal VPN users [which I've since changed the range, but even setting it back to the initial doesn't work]. Ever since then, no matter what settings I try, I pretty much consistently get this in my /var/log/messages [and the VPN client fails]: [root@vpn2 ~]# tail /var/log/messages Aug 31 15:57:22 vpn2 pppd[18386]: pppd 2.4.5 started by root, uid 0 Aug 31 15:57:22 vpn2 pppd[18386]: Using interface ppp0 Aug 31 15:57:22 vpn2 pppd[18386]: Connect: ppp0 <--> /dev/pts/1 Aug 31 15:57:22 vpn2 pptpd[18385]: GRE: Bad checksum from pppd. Aug 31 15:57:24 vpn2 pppd[18386]: Peer armaniadm failed CHAP authentication Aug 31 15:57:24 vpn2 pppd[18386]: Connection terminated. Aug 31 15:57:24 vpn2 pppd[18386]: Exit. Aug 31 15:57:24 vpn2 pptpd[18385]: GRE: read(fd=6,buffer=8059660,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs Aug 31 15:57:24 vpn2 pptpd[18385]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Aug 31 15:57:24 vpn2 pptpd[18385]: CTRL: Client 208.54.86.242 control connection finished Now before you go blaming the firewall [all other forum posts I find seem to go there], this VPN server is on our DMZ network. We're using a Juniper SSG-5 Gateway, and I've assigned a WAN IP to the VPN box itself, zoned into the DMZ zone. Then, I have full "Any IP / Any Protocol" open traffic rules between DMZ<--Untrust Zone, and DMZ<--Trust Zone. I'll limit this later to just the authenticating traffic it needs, but for now I think we can rule out the firewall blocking anything. Here's my /etc/pptpd.conf [omitting comments]: option /etc/ppp/options.pptpd logwtmp localip [EXTERNAL_IP_ADDRESS] remoteip [ANOTHER_EXTERNAL_IP_ADDRESS, AND HAVE TRIED AN ARBITRARY GROUP LIKE 5.5.0.0-100] Here's my /etc/ppp/options.pptpd.conf [omitting comments]: name pptpd refuse-pap refuse-chap refuse-mschap require-mschap-v2 require-mppe-128 ms-dns 192.168.200.42 # This is our internal domain controller ms-wins 192.168.200.42 proxyarp lock nobsdcomp novj novjccomp nologfd auth nodefaultroute plugin winbind.so ntlm_auth-helper "/usr/bin/ntlm_auth --helper-protocol=ntlm-server-1" Any help is GREATLY appreciated. I can give you any more info you need to know, and it's a new test server, so I can perform any tests/reboots required to get it up and going. Thanks a ton.

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• Apache proxy pass in nginx

  - by summerbulb

  I have the following configuration in Apache: RewriteEngine On #APP ProxyPass /abc/ http://remote.com/abc/ ProxyPassReverse /abc/ http://remote.com/abc/ #APP2 ProxyPass /efg/ http://remote.com/efg/ ProxyPassReverse /efg/ http://remote.com/efg/ I am trying to have the same configuration in nginx. After reading some links, this is what I have : server { listen 8081; server_name localhost; proxy_redirect http://localhost:8081/ http://remote.com/; location ^~/abc/ { proxy_set_header X-Forwarded-Host $host; proxy_set_header X-Forwarded-Server $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass http://remote.com/abc/; } location ^~/efg/ { proxy_set_header X-Forwarded-Host $host; proxy_set_header X-Forwarded-Server $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass http://remote.com/efg/; } } I already have the following configuration: server { listen 8080; server_name localhost; location / { root html; index index.html index.htm; } location ^~/myAPP { alias path/to/app; index main.html; } location ^~/myAPP/images { alias another/path/to/images autoindex on; } } The idea here is to overcome a same-origin-policy problem. The main pages are on localhost:8080 but we need ajax calls to http://remote.com/abc. Both domains are under my control. Using the above configuration, the ajax calls either don't reach the remote server or get cut off because of the cross origin. The above solution worked in Apache and isn't working in nginx, so I am assuming it's a configuration problem. I think there is an implicit question here: should I have two server declarations or should I somehow merge them into one? EDIT: Added some more information EDIT2: I've moved all the proxy_pass configuration into the main server declaration and changed all the ajax calls to go through port 8080. I am now getting a new error: 502 Connection reset by peer. Wireshark shows packets going out to http://remote.com with a bad IP header checksum.

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• Email postfix marked as spam by google

  - by Rodrigo Ferrari

  Hello friends, I searched about this question, found some few answers but no idea how to fix, the problem is that I realy dumb with all this! I configured the postfix and done everything how the install how to told. It send the email, but get marked as spam! The header is this one: Delivered-To: [email protected] Received: by 10.223.86.203 with SMTP id t11cs837410fal; Wed, 12 Jan 2011 04:02:21 -0800 (PST) X-pstn-nxpr: disp=neutral, [email protected] X-pstn-nxp: bodyHash=9c6d0c64fa3a4d663c9968e9545c47d77ae0242e, headerHash=1ab8726bd17a23218309165bd20fe6e0911627cd, keyName=4, rcptHash=178929be6ed8451d98a4df01a463784e6c59b3b4, sourceip=174.121.4.154, version=1 Received: by 10.100.190.13 with SMTP id n13mr537609anf.76.1294833740396; Wed, 12 Jan 2011 04:02:20 -0800 (PST) Return-Path: <[email protected]> Received: from psmtp.com ([74.125.245.168]) by mx.google.com with SMTP id w2si1297960anw.132.2011.01.12.04.02.19; Wed, 12 Jan 2011 04:02:20 -0800 (PST) Received-SPF: pass (google.com: domain of [email protected] designates 174.121.4.154 as permitted sender) client-ip=174.121.4.154; Authentication-Results: mx.google.com; spf=pass (google.com: domain of [email protected] designates 174.121.4.154 as permitted sender) [email protected] Received: from source ([174.121.4.154]) by na3sys010amx168.postini.com ([74.125.244.10]) with SMTP; Wed, 12 Jan 2011 12:02:19 GMT Received: from localhost (server [127.0.0.1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by brasilyacht.com.br (Postfix) with ESMTP id 87C121290142; Wed, 12 Jan 2011 09:50:29 -0200 (BRST) From: YachtBrasil <[email protected]> Reply-To: Vendas <[email protected]> Cc: YachtBrasil <[email protected]> To: [email protected] Subject: teste Date: Wed, 12 Jan 2011 09:50:29 -0200 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline MIME-Version: 1.0 Message-Id: <[email protected]> X-pstn-2strike: clear X-pstn-neptune: 0/0/0.00/0 X-pstn-levels: (S: 1.96218/99.81787 CV:99.9000 FC:95.5390 LC:95.5390 R:95.9108 P:95.9108 M:97.0282 C:98.6951 ) X-pstn-settings: 3 (1.0000:1.0000) s cv gt3 gt2 gt1 r p m c X-pstn-addresses: from <[email protected]> [db-null] I'm out of ideas on how to fix this, I think it's dns issue, but I have marked the spf inside my tinydns =( Is there anything I can check to know why this email is marked as spam? Any help will be appreciated! Thanks and sorry for my bad english.

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• DVD playback with Windows Media Player 11 works fine, but when copied to HDD and then played back, t

  - by stakx

  I have several DVDs with short documentaries on it. Since the notebook I'm using (a Dell Latitude E6400) has only one DVD drive, and I might play back those short movies very often, I thought of copying them to the HDD and playing them back from there. However, I've run into a problem, namely stuttering audio. Problem description: When I play back these movies directly from DVD (with Windows Media Player 11 under Windows Vista), everything works fine. Smooth video, no significant audio problems (only the occasional click). But as soon as I copy any of these DVDs to the HDD and try to play them back from there (e.g. using the wmpdvd://drive/title/chapter?contentdir=path protocol, I get stuttering audio — audio playback sounds like a machine gun for a third of a second or so, approx. every 8 seconds. I have tried converting the VOB files from the DVD to another format (ie. ripping), but that resulted in a noticeable downgrade of picture quality. Therefore I thought it best to keep the files in their original format, if possible. Still, I suspect that the stuttering audio is due to some (de-)muxing problem, and that changing the file format might help. (After all, video playback is fine; therefore I don't think that the hardware is too slow for playback.) Only thing is, I don't know how to convert the VOB files to another Windows Media Player-compatible format without quality loss. I hope someone can help me, or give me further pointers on things I could try out to get HDD playback to work without the problem described. Some things I've tried so far, without any success: VOB2MPG, in order to convert the .vob file to a .mpg file. But that changes only the A/V container, not the content. No re-encoding takes place at all. Re-encoding with MPlayer/MEncoder. Lots of quality loss there, and I frankly haven't got the time to test all possible settings combinations available. Disabling all plug-ins, equalizers, etc. in Windows Media Player. Disabling all hardware acceleration on the audio playback device. Further info on the VOB files I'm trying to playback: The video format is MPEG ES, PAL 720x576 pixels @ 24/25 frames per second. The sound stream is uncompressed PCM, 16-bit stereo @ 48kHz. (Might it help if I somehow re-encoded the sound stream at a lower resolution, or as an MP3? If so, how would I do this without changing the video stream?) P.S.: I am limited to using Windows Media Player (11). (I previously tried MPlayer btw., but the video playback quality was surprisingly bad.)

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• Samba share not accessible from Win 7 - tried advice on superuser

  - by Roy Grubb

  I have an old Red Hat Linux box that I use, amongst other things, to run Samba. My Vista and remaining Win XP PC can access the p/w-protected Samba shares. I just set up a new Windows 7 64-bit Pro PC. Attempts to access the Samba shares by clicking on the Linux box's icon in 'Network' from this machine gave a Logon failure: unknown user name or bad password. message when I gave the correct credentials. So I followed the suggestions in Windows 7, connecting to Samba shares (also checked here but found LmCompatibilityLevel was already 1). This got me a little further. If click on the Linux box's icon in 'Network' from this machine I now see icons for the shared directories. But when I click on one of these, I get \\LX\share is not accessible. You might not have permission... etc. I tried making the Win 7 password the same as my Samba p/w (the user name was already the same). Same result. The Linux box does part of what I need for ecommerce - the in-house part, it's not accessible to the Internet. As my Linux Fu is weak, I have to avoid changes to the Linux box, so I'm hoping someone can tell me what to do to Win 7 to make it behave like XP and Vista when accessing this share. Help please!? Thanks Thanks for replying @Randolph. I had set 'Network security: LAN Manager authentication level' to Send LM & NTLM - use NTLMv2 session security if negotiated based on the advice in Windows 7, connecting to Samba shares and had restarted the machine, but that didn't work for me. I'll try playing with other Network security values. I have now tried the following: Network security: Allow Local System to use computer identity for NTLM: changed from Not Defined to "Enabled". Restarted machine Still says "\LX\share is not accessible. You might not have permission..." etc. Network security: Restrict NTLM: Add remote server exceptions for NTLM Authentication (added LX) Restarted machine Still says "\LX\share is not accessible. You might not have permission..." etc. I can't see any other Network security settings that might affect this. Any other ideas please? Thanks Roy

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• Looking for Fiddler2 help. connection to gateway refused...just got rid of a virus?

  - by john mackey

  I use Fiddler2 for facebook game items, and it's been a great success. I accessed a website to download some dat files I needed. I think it was eshare, ziddu or megaupload, one of those. Anyway, even before the rar file had downloaded, I got this weird green shield in the bottom right hand corner of my computer. It said a Trojan was trying to access my computer, or something to that extent. It prompted me to click the shield to begin anti-virus scanning. It turns out this rogue program is called Antivirus System Pro and is pretty hard to get rid of. After discovering the rogue program, I tried using Fiddler and got the following error: [Fiddler] Connection to Gateway failed. Exception Text: No connection could be made because the target machine actively refused it 127.0.0.1:5555 I ended up purchasing SpyDoctor + Antivirus, which I'm told is designed specifically for getting rid of these types of programs. Anyway, I did a quick-scan last night with spydoctor and malware bytes. Malware picked up 2 files, and Spydoctor found 4. Most were insignificant, but it did find a worm called Worm.Alcra.F, which was labeled high-priority. I don’t know if that’s the Anti-Virus Pro or not, but SpyDoctor said it got rid of all of those successfully. I tried to run Fiddler again before leaving home, but was still getting the "gateway failed" error. Im using the newest version of firefox. When I initially set up the Fiddler 2.2.8.6, I couldn’t get it to run at first, so I found this faq on the internet that said I needed to go through ToolsOptionsSettings and set up an HTTP Proxy to 127.0.0.1 and my Port to 8888. Once I set that up and downloaded this fiddler helper as a firefox add-on, it worked fine. When I turn on fiddler, it automatically takes my proxy setting from no proxy (default) to the 127.0.0.1 with Port 8888 set up. It worked fine until my computer detected this virus. Anyway, hopefully I've given you sufficient information to offer me your best advice here. Like I said, Spydoctor says the bad stuff is gone, so maybe the rogue program made some type of change in my fiddler that I could just reset or uncheck or something like that? Or will I need to completely remove fiddler and those dat files and rar files I downloaded? Any help would be greatly appreciated. Thanks for your time.

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• IIS6 Virtual Directory 500 Error on Remote Share

  - by David Boike

  We have our servers at the server farm in a domain. Let's call it LIVE. Our developer computers live in a completely separate corporate domain, miles and miles away. Let's call it CORP. We have a large central storage unit (unix) that houses images and other media needed by many webservers in the server farm. The IIS application pools run as (let's say) LIVE\MediaUser and use those credentials to connect to a central storage share as a virtual directory, retrieve the images, and serve them as if they were local on each server. The problem is in development. On my development machine. I log in as CORP\MyName. My IIS 6 application pool runs as Network Service. I can't run it as a user from the LIVE domain because my machine isn't (and can not be) joined to that domain. I try to create a virtual directory, point it to the same network directory, click Connect As, uncheck the "Always use the authenticated user's credentials when validating access to the network directory" checkbox so that I can enter the login info, enter the credentails for LIVE\MediaUser, click OK, verify the password, etc. This doesn't work. I get "HTTP Error 500 - Internal server error" from IIS. The IIS log file reports sc-status = 500, sc-substatus = 16, and sc-win32-status = 1326. The documentation says this means "UNC authorization credentials are incorrect" and the Win32 status means "Logon failure: unknown user name or bad password." This would be all and good if it were anywhere close to accurate. I double- and trouble-checked it. Tried multiple known good logins. The IIS manager allows me to view the file tree in its window, it's only the browser that kicks me out. I even tried going to the virtual directory's Directory Security tab, and under Authentication and Access Control, I tried using the same LIVE domain username for the anonymous access credential. No luck. I'm not trying to run any ASP, ASP.NET, or other dynamic anything out of the virtual directory. I just want IIS to be able to load static images, css, and js files. If anyone has some bright ideas I would be most appreciative!

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• Automatic layout of manual network mapping

  - by Paul

  So I have a small business network mainly consisting of two routed layer-2 domains with a total of ca. 100 devices spread over ca. 2000m² production and office spaces. Typical problems to solve using the graph would be: Over what (cable) path is a PC connected to the server? Where to expect devices connected to a switch port? I want to generate a graph of the physical network topology: Nodes are endpoint devices, switch ports, wall outlets, patch panel ports etc. Edges are cable connections. Ideally, grouping edges (or segments) that pass through the same bundle could be grouped. Also I would like to augment the graph data with automatically gathered data (monitoring state, MAC address, Switch port <- MAC entries to build up parts of the map). At the moment I use graphviz for this inside a Confluence wiki like that: layout = "neato" overlap = scale subgraph { rankdir = "TB" subgraph cluster_r1pf1 { r1pf1 [label="{ Rack 1 PF 1 | { <p1>P1 | <p2>P2 | <p3>P3} }", shape=record] } subgraph cluster_switch1 { switch1 [label="{ Rack 1 Switch 1 | { <p1> P1 | <p1> P1 | <p3> P3} }", shape=record] } r1pf1:p1 -> switch1:p1 (obviously there are dozens of entries omitted here) Problem is: I have a hard time to influence graphviz to generate a bearable layout. Edges overlap so bad that you can't read the diagram anymore. The question is: What other tools (be it interactive like Visio, Omnigraffle or I/O-oriented like graphviz) exist that would allow an easily versionable (as in: Operates on a text file) documentation that is both machine and human readable and editable? Why not OmniGraffle or Visio? Well we don't have Macs and Visio is not available at the moment. To buy it I would need good arguments. Automation would be one of that. But last time I looked, versioning Visio files or even thinking about automatic handling was a nightmare. Related: Network Mapping Tools basically asks the same with a focus on generating the complete graph automatically (but without the need to document cabling connections) Recommendations for automatic computer inventory brings up links of "all-in-one" solutions

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• Intel RST accidentally selected wrong drive as system drive -- how to fix?

  - by Sean Killeen

  Question / TL;DR If Intel RST has marked a drive other than my RAID set as the system drive, how can I get it so that the RAID set is now seen as the system drive, and catch it up to my drive now? What Happened NOTE: Some perhaps unwise decisions are ahead. This is as best as I can recall the order of things. I had a 2x1TB RAID1 config. I bought the drives around the same time, and they started to die around the same time. I replaced 1st drive with a 2 TB drive before the other one's SMART errors got more serious. I waited for the RAID to replicate, then replaced the 2nd drive with a manufacturer's replacement. I got a second manufacturer's drive replacement and used it as a spare. so I now I had a 1TB/2TB drive in a RAID1 and another 1TB as a spare. The 1TB drive in the replacement set was bad from the manufacturer. Rather than mess with their refurbished stuff, I bought another 2 TB drive an upped the config to a 2x2TB RAID1 with the other, functioning manufacturer's drive as a spare. I made the mistake of trying to bring the other drive online to clean it out and the signatue clash killed my machine. When the machine rebooted, that drive was marked as the system drive. So, I have a 2x2TB RAID1 that is apparently offline, and 1 spare 1 TB refurbished drive that everything is being run from. Not a great idea. Options I'm considering Bring the 2x2TB drive back online, and then unplug the spare until I can format it in another system. This would involve some data loss, but the more I think about it, I actually think I haven't modified any data that isn't backed up or synced somewhere (go me!) Anything that isn't is likely trivial, enough that I'm willing to take the risk. One downside here is that if the 2 TB doesn't have data on it for some reason, I could be screwed trying to put the other drive back in, no? Try to somehow get the RAID1 updated with the data from the current system drive. Option 3?

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• Missing startup screens and slow bootup/login after using WinClone to expand Bootcamp partition

  - by user26453

  I used WinClone to backup my Bootcamp partition, which was a Windows 7 Ultimate install, on my late 2006 Macbook Pro. I desired to expand the Bootcamp partition's size. It worked reasonably well with some hiccups along the way and some remaining issues. First issue I ran into was the Bootcamp Assistant utility - it would not recreate the partition. This was due to a lack of contiguous space that is required for the Bootcamp partition. As a result I wiped the whole drive and reinstalled Snow Leopard, did the minimum amount of system updates, and created and formated a new Bootcamp partition. WinClone restored the image without complaint and the image was automatically resized to the new partition's size. Second issue I ran into was after the first boot into Windows. The first thing I noticed was that instead of the newer "slick" startup screen (4 colors wisping around, a Windows 7 title), there was more of an old school style startup screen (a progress bar with block increments, yellow/greenish color, nothing else really). The initial bootup to a login screen was slow, perhaps as Windows dealt with the partition changes. After logging in, the screen goes blank and the computer seems to hang for a minute, before completing the login. After subsequent restarts, the slick screen is still missing, boot to login screen is normal, but the time from login to desktop active is still very slow. As a side note, this behavior of a long time from login to the desktop finally loaded I've previously only seen when the computer would try to hibernate and fail (battery is really bad). On the next startup, I would see this behavior, but not subsequently. So a potential cause: I imaged the partition after hibernating out of Windows. From reading some posts/guides on the subject, this was not recommended, and perhaps shouldn't even have worked? Could the partition be stuck in some weird mode as a result that makes the boot issues appear? I've attempted to disable hibernation and restart, trying to delete the .sys file that hibernation uses. Other fixes I'm thinking of attempting are booting a Win7 disc and repairing the install/partition. I can't shake the nagging feeling something isn't right as a result of the modified boot screens and the slow login process.

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• Is it safe to enable forced ASLR via EMET on Windows?

  - by D.W.

  I'd like to enable forced ASLR for all DLLs on Windows. Is this safe? Background: ASLR is an important security mechanism that helps defend against code injection attacks. DLLs can opt into ASLR, and most do, but some DLLs have not opted into ASLR. If a program loads even a single non-ASLRized DLL, then the program doesn't get the benefit/protection of ASLR. This is a problem, because there are a non-trivial number of DLLs that haven't opted into ASLR. For instance, it was recently revealed that Dropbox injects a DLL into a bunch of processes, and the Dropbox DLL doesn't have ASLR turned on, which negates any ASLR protection they otherwise would have had. Unfortunately, there are many other widely used DLLs that haven't opted into ASLR. This is bad for system security. Microsoft provides several ways to turn on ASLR for all DLLs, even ones that haven't opted into ASLR: On Windows 7 and Windows Server 2008, you can enable "Force ASLR" in the registry. On all Windows versions, you can use Microsoft's EMET tool and enable EMET's "Mandatory ASLR" option. These methods are possible because all DLLs are compiled as position-independent code and they can be relocated to a random location even if they haven't opted into ASLR. These options will ensure that ASLR is turned on, even if the developers of the DLL forgot to opt into ASLR. Thus, forcing on ASLR systemwide may help system security. In principle, turning on forced ASLR could potentially break a poorly-written DLL, so there is some risk of breakage. I'm interested in finding out just significant this risk is. I have the suspicion that this kind of breakage might be extremely rare. Here's what I've been able to find: Microsoft has done compatibility testing with several dozen widely used applications. The only one they found where Mandatory ASLR causes problems is Windows Media Player. All the other applications continue working fine. (See pp.39-41 of this document.) I've seen some anecdotal reports that enabling "Mandatory ASLR"/"Force ASLR" is fine and unlikely to cause problems. CERT reports that AMD and ATI video drivers used to crash if you enabled forced ASLR, but their latest drivers have now fixed this problem. They don't show any other drivers with this problem. A forum post from Microsoft shows no other applications with compatibility problems if ASLR is forced on, as of 2011. A user reports that borderlands.exe, a video game by Gearbox Software, crashes if you turn on mandatory ASLR. What else should I know? Is it relatively safe to turn on Force ASLR / Mandatory ASLR systemwide to harden the secuity of my system, or will I be in for a world of pain and broken applications? How significant is the risk of compatibility problems and broken applications?

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