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• "Error loading operating system": Win7/Vista

  - by LookitsPuck

  Hey fellas, Have this computer for about 2 years now. Originally had Vista installed, now have Windows 7 installed. Both on separate hard drives. Also have another drive used strictly for media. About a week ago, the Vista hard drive started going on its way out. Was getting problems on startup. After a few BIOS settings, I was able to get into Windows 7 and everything was fine. However, I started remembering the startup issues, so I deleted the bootup for Vista under msconfig. Didn't restart the computer at that time, though. For a few days, everything was ok. Last night I play a little poker, then hit the hay. I wake up to a good ole "Error loading operating system" on the screen. Just wonderful. Looks like the computer restarted overnight (auto updates, anyone?). So, after a big of finagling and half hearted tries, I can't get past the "Error loading operating system" screen. FWIW, in the BIOS it can see my hard drives fine. So I move on. I get my Windows 7 installation disk to try and do a repair. Go in the BIOS, change boot priority to DVD drive, and we're on our merry way. After loading from the disc, I first try jumping into the "Repair your computer" section. That opens up the System Recovery Options. However, this is where the problem comes into play. I don't see any operating systems here. Nada. What's odd though is if I click on the Load Drivers button, I can see my Windows 7 partition (C:), and can go through the files and folders without issue. What do I do at this point? I can't repair it. It seems like I can traverse the hard drive without issue when in an open dialog in the System Recovery Options, but I'm getting the good ole "Error loading computer" on bootup. Suggestions? Thanks all!!

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• IE and Google Chrome timeout on an IIS6 hosted SSL page that Firefox handles well

  - by Thomas

  Ok, here's the scenario: Up until a few weeks ago, none of us noticed anything wrong with the corporate website. People were using it without complaint. Then, a client complained that a specific page on the site was timing out for him, and only when he committed a POST action on a form filled with data. I checked it out, and it timed out for me, too. But, it only timed out in Google Chrome and IE, not in Firefox. Additionally, the same page, on the same server, but served from a different domain name (one not under the protection of SSL, either) does not time out under any browser. To clarify: https://www.mysite.com/changes.php times out on POST, but the same with http works fine. That distinction (SSL vs. Non-SSL) seems to be important, as nothing else has changed. Our certificate is valid, and Firefox detects no errors thrown by the page. I've looked at the Request and Response headers from the page, and they all follow the correct formats. Then, after wandering through the site, I noticed a few other things. Both IE and Chrome will frequently time out on any page that is PHP-based. They never time out on static images or html files. I've looked at the site from a variety of different servers, my home and work workstations, and my netbook. Because of that, I've discounted a viral infection, as I highly doubt a virus is going to hit every one of the machines to which I have access in exactly the same manner. My setup is: Server: Win2k3, II6, PHP 5.2.9-1. Clients: IE7, IE8, Chrome (regular and dev channel): Frequent timeouts on PHP pages. Firefox 2, Firefox 3: No timeouts. Firebug shows no errors or even lengthy periods serving the pages. I've spent 2 days searching for any tech knowledge that I can find, and my search parameters are all too general. Everyone has problems loading SSL pages in IE and Chrome for a wide variety of reasons. The infrequent nature of the timeouts and the fact that there are no errors being reported anywhere is starting to drive me insane. Does anyone have any insight on a problem like this?

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• Vim configuration slow in Terminal & iTerm2 but not in MacVim

  - by Jey Balachandran

  Ideally, I want to use Vim from Terminal or iTerm2. However, it becomes unbearably slow so I had to resort to using MacVim. There is nothing wrong with MacVim, however my workflow would be much smoother if I used only Terminal/iTerm2. When its slow Loading files, in particular Rails files takes about 1 - 1.5s. Removing rails.vim decreases this time to 0.5 - 1s. In MacVim this is instantaneous. Scrolling through the rows and columns via h, j, k, l. It progressively gets slower the longer I hold down the keys. Eventually, it starts jumping rows. I have my Key Repeat set to Fast and Delay Until Repeat set to Short. After 10 - 15 minutes of usage, using plugins such as ctrlp or Command-T gets very laggy. I'd type a letter, wait 2 - 3s, then type the next. My Setup 11" MacBook Air running Mac OS X Version 10.7.3 (1.6 Ghz Intel Core 2 Duo, 4 GB DDR3) My dotfiles. > vim --version VIM - Vi IMproved 7.3 (2010 Aug 15, compiled Nov 16 2011 16:44:23) MacOS X (unix) version Included patches: 1-333 Huge version without GUI. Features included (+) or not (-): +arabic +autocmd -balloon_eval -browse ++builtin_terms +byte_offset +cindent -clientserver +clipboard +cmdline_compl +cmdline_hist +cmdline_info +comments +conceal +cryptv -cscope +cursorbind +cursorshape +dialog_con +diff +digraphs -dnd -ebcdic +emacs_tags +eval +ex_extra +extra_search +farsi +file_in_path +find_in_path +float +folding -footer +fork() -gettext -hangul_input +iconv +insert_expand +jumplist +keymap +langmap +libcall +linebreak +lispindent +listcmds +localmap -lua +menu +mksession +modify_fname +mouse -mouseshape +mouse_dec -mouse_gpm -mouse_jsbterm +mouse_netterm -mouse_sysmouse +mouse_xterm +multi_byte +multi_lang -mzscheme +netbeans_intg +path_extra -perl +persistent_undo +postscript +printer +profile +python -python3 +quickfix +reltime +rightleft +ruby +scrollbind +signs +smartindent -sniff +startuptime +statusline -sun_workshop +syntax +tag_binary +tag_old_static -tag_any_white -tcl +terminfo +termresponse +textobjects +title -toolbar +user_commands +vertsplit +virtualedit +visual +visualextra +viminfo +vreplace +wildignore +wildmenu +windows +writebackup -X11 -xfontset -xim -xsmp -xterm_clipboard -xterm_save system vimrc file: "$VIM/vimrc" user vimrc file: "$HOME/.vimrc" user exrc file: "$HOME/.exrc" fall-back for $VIM: "/usr/local/Cellar/vim/7.3.333/share/vim" Compilation: /usr/bin/llvm-gcc -c -I. -Iproto -DHAVE_CONFIG_H -DMACOS_X_UNIX -no-cpp-precomp -O3 -march=core2 -msse4.1 -w -pipe -D_FORTIFY_SOURCE=1 Linking: /usr/bin/llvm-gcc -L. -L/usr/local/lib -o vim -lm -lncurses -liconv -framework Cocoa -framework Python -lruby I've tried running without any plugins or syntax highlighting. It opens files a lot faster but still not as fast as MacVim. But the other two problems still exist. Why is my vim configuration slow? How can I improve the speed of my vim configuration within Terminal or iTerm2?

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• Rsync: windows 7, synology: login error and permission denied error

  - by loonboon

  Good day to all of you all, I'm running into strange/stupid errors, and I hope anybody would be so kind to help me out. I have to admit, I am by no means a guru, so please bear with me :-) Situation: -Synology NAS (runs Linux), and Windows 7 desktop (1 normal/restricted user Lisa and 1 admin user). - Data from W7 desktop to be rsynced to synology: /volume1/home/Lisa/Backup - Rsync command: c:\cygwin\bin\rsync -avz /cygdrive/e/Lisa/ [email protected]:/volume1/homes/Lisa/Backup - I've set up ssh per these two threads: a. http://www.cesareriva.com/archives/102 b. http://www.cesareriva.com/archives/112 Now the horrors begin: - root is allowed to run the rsync succesfully, however, he doesn't login automatically (so I can not use rsync in W7 batchscripts, which is of course required). - Lisa is allowed to login automatically but he can not succesfully finish the rsync command because of permission errors: rsync change dir /volume1/homes/Lisa/Backup failed: permissions denied. This happens for each and every file and subdir rsync tries to create. However, the main directory (Backup) is created. When I try to copy files from windows explorer to the directory 'Backup' using the very same user Lisa everything goes smoothly. So, obviously, there is a permission problem somewhere; either my rsync-command isn't correct, or the folder permissions for homes/Lisa aren't correct (but, then again, Windows 7 copies files to that folder without any problems, so that does make me believe the homes/Lisa-permissions don't appear to be the problem). I also tried adding: --chmod=Dugo+x --chmod=ugo+r which I found somewhere on the web, to the rsync-command, but this didn't solve any problem and gave the exact errors. Would anybody please please help me on how to fix this? I am utterly frustrated about this, because I have been trying for 1 month to get everything to work and it simply doesn't work. I bought the big Synology to end the horrors of 20 external USB-disks for once and for all (we have many pictures and home vids of our deceased dogs and want to watch these, the horrors being 'what material is on what disk'). I'll gladly return the favour of somebody helping me out by buying you a nice beer (paypal), if you could end my misery. I am not extremely skilled on Linux (not at all :-( ) so if you could give an extra word when possible so I understand what to do, I'd be very grateful. I really hope somebody can help me out, Thank you in advance, Lisa

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• How to get more information from the system crash

  - by viraptor

  I'd like to debug an issue I'm having with a linux (debian stable) server, but I'm running out of ideas of how to confirm any diagnosis. Some background: The servers are running DL160 class with hardware raid between two disks. They're running a lot of services, mostly utilising network interface and CPU. There are 8 cpus and 7 "main" most cpu-hungry processes are bound to one core each via cpu affinity. Other random background scripts are not forced anywhere. The filesystem is writing ~1.5k blocks/s the whole time (goes up above 2k/s in peak times). Normal CPU usage for those servers is ~60% on 7 cores and some minimal usage on the last (whatever's running on shells usually). What actually happens is that the "main" services start using 100% CPU at some point, mainly stuck in kernel time. After a couple of seconds, LA goes over 400 and we lose any way to connect to the box (KVM is on it's way, but not there yet). Sometimes we see a kernel reporting hung task (but not always): [118951.272884] INFO: task zsh:15911 blocked for more than 120 seconds. [118951.272955] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [118951.273037] zsh D 0000000000000000 0 15911 1 [118951.273093] ffff8101898c3c48 0000000000000046 0000000000000000 ffffffffa0155e0a [118951.273183] ffff8101a753a080 ffff81021f1c5570 ffff8101a753a308 000000051f0fd740 [118951.273274] 0000000000000246 0000000000000000 00000000ffffffbd 0000000000000001 [118951.273335] Call Trace: [118951.273424] [<ffffffffa0155e0a>] :ext3:__ext3_journal_dirty_metadata+0x1e/0x46 [118951.273510] [<ffffffff804294f6>] schedule_timeout+0x1e/0xad [118951.273563] [<ffffffff8027577c>] __pagevec_free+0x21/0x2e [118951.273613] [<ffffffff80428b0b>] wait_for_common+0xcf/0x13a [118951.273692] [<ffffffff8022c168>] default_wake_function+0x0/0xe .... This would point at raid / disk failure, however sometimes the tasks are hung on kernel's gettsc which would indicate some general weird hardware behaviour. It's also running mysql (almost read-only, 99% cache hit), which seems to spawn a lot more threads during the system problems. During the day it does ~200kq/s (selects) and ~10q/s (writes). The host is never running out of memory or swapping, no oom reports are spotted. We've got many boxes with similar/same hardware and they all seem to behave that way, but I'm not sure which part fails, so it's probably not a good idea to just grab something more powerful and hope the problem goes away. Applications themselves don't really report anything wrong when they're running. I can run anything safely on the same hardware in an isolated environment. What can I do to narrow down the problem? Where else should I look for explanation?

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• what is Remote Desktop Services in Windows Server 2008 R2 all about?

  - by fejesjoco

  Seriously, I'm lost in all that sales mumbo-jumbo. Let's say I want 1 or 2 users to be able to remotely log on to a server, run Word, Visual Studio, Firefox, and whatever. Do I gain anything at all if I install Remote Desktop Services? Or do I just install Desktop Experience feature pack, enable remote desktop and voila, nobody will ever notice the difference? Here's what TechNet says about Remote Desktop Session Host: A Remote Desktop Session Host (RD Session Host) server is the server that hosts Windows-based programs or the full Windows desktop for Remote Desktop Services clients. Users can connect to an RD Session Host server to run programs, to save files, and to use network resources on that server. Users can access an RD Session Host server by using Remote Desktop Connection or by using RemoteApp. The good old simple remote desktop can also host a full Windows desktop for remote clients so that they can run programs, save files and do all that stuff. Why do they write about it like it's such a great new invention, besides that they want to sell it? RDSH doesn't seem all that different at all. What do I install when I install RDSH, since all those features are already there in Windows? What's even more confusing is that you need to take special care when you want to install applications to an RDSH so that they will be usable by many concurrent users. Why? All the modern applications install the program files in one directory, store some common settings in the ProgramData folder and the HKLM hive, and store user specific settings in the Users folder and the HKCU hive. They are designed to be usable by many users on the same machine. 2 or 2000 users can use them concurrently without any efforts. I can sign in with 2 users to a server with only remote desktop enabled, and both of us can run Word or anything without any problems, can't we? So what changes if I set RDSH to install mode, or what happens if I don't? Why is the feature to switch between install and execute mode there at all? Yes I know of some advantages in Remote Desktop Services, like there's no 2 user limit, it supports virtualization, video acceleration and stuff, it has a whole infrastructure with gateway, web access, connection broker, etc. But I don't need those, so if you take these away, how are these two technologies different? From the articles it seems like they are completely different technologies, whereas it looks to me that they are completely the same at the core, and Remote Desktop Services just adds some additional features, but doesn't reinvent anything.

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• what can cause a folder to become indestructible?

  - by JustJeff

  I have a directory that I want to delete, but windows (xp sp3) is giving me the run-around and the folder is now effectively indestructible. Attempts to open the folder, either via explorer or cmd.exe are met with 'd:/temp/foo Is Not Accessible. Access is denied'. Attempts to delete the folder result in 'Cannot delete foo: The directory is not empty' So I can't delete it because supposedly it's not empty, but windows won't let me in it for some reason, so I can't clean it out first. There's nothing in it of consequence, and basically I just want to delete it at this point. Thinking that some other process must have a lock on it, I used the SysInternals 'handles' and Process Explorer to look for open handles with the directory name. These turned up no matches. (The directory name is not actually 'foo', it is something more unique but 'foo' is easier to type here). I put the machine through a restart, and the problem persists. I did a search for the folder name with regedit, to see what other apps might be aware of it. No match. The properties dialog was mildly interesting. The Read-Only attribute is 'semi-checked', i.e., the grayish check mark you get when some parts are and some parts aren't. Naturally I immediately unchecked this, and tried to delete the folder. No go. Opening properties again reveals the gray check mark next to Read-Only has returned. All the stats, size, size on disk, files, folders, all these are zero. There do not appear to be any shares on the folder, so that's not it either. Finally, I tried opening the partition's properties, and running the Tools/Error Checking utility. This didn't turn up any problems either. Fwiw, this directory was created by [a popular gui zip tool] when I tried to unpack a tar-and-zipped archive created on another system with command line utils. The archive was definitely corrupt, but I've never seen such a file do anything worse than crash the zip app, and certainly never leave permanent glitches in the file system. So what else can possibly be going on to make this folder behave this way?

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• XP shared folders not accessible after BIOS changed

  - by stijn

  Here's what worked for over a year: PC A runs Windows 7, PC B runs Windows XP. Both are on the same subnet behind a router. A uses user account X, but logs in to PC B using the Administrator account. PC B is a Dell Precision 470. A known problem with these is that sometimes when plugging in their power cable they somehow loses all BIOS settings. This happened yesterday. After this happens Windows won't boot, because the default BIOS setting is 'RAID ON' while there is no RAID configured. No problem though, changing the BIOS settings to 'RAID OFF' makes it boot without problems. Note that in the meantime, nothing config-related was changed on machine A. It wasn't even on. Indeed after doing this, everything is fine. Everything includes all normal operations, remote desktop from PC A to PC B, running Synergy between A and B, accessing shared folders from B to A. But accessing the shared folders on B from A does not work any more. I tried pretty much everything I found via Google (fiddling with policies/registry kes/...) but no avail. > ping -a 192.168.2.2 Pinging A [192.168.2.2] with 32 bytes of data: Reply from 192.168.2.2: bytes=32 time<1ms TTL=128 > net view \\192.168.2.2 System error 5 has occurred. Access is denied. > net use /persistent:no K: \\A\myshare /user:A\USERNAME PASSWORD > net use /persistent:no K: \\192.168.2.2\myshare /user:192.168.2.2\USERNAME PASSWORD > net use /persistent:no K: \\192.168.2.2\myshare /user:USERNAME PASSWORD System error 86 has occurred. The specified network password is not correct. A solution to this would be great: I haven't been able to do any work since yesterday ;] update after taking the hard drive out of B and putting it in another Precision 470 with almost exactly the same hardware (at first sight, only the video card differs) the shared folders work.. Putting the disk back into A, same problem remains. Why does this depend on hardware, and more important, on which hardware?

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• Windows 7, weird/annoying explorer problem

  - by Shiki

  First of all, I'm asking the moderators if you could summarize my problem in the Title and modify it according to that. Thanks in advance and sorry, my english is not that good. The problem. It happened on two of my machines already. Once it happens there are many problems with explorer. I'll try to describe at precisely I just can. So. Basically when you create a new folder, you have to hit the enter key TWICE because first it'll throw an error that "there is no such file..". Okay. Then if you try to delete some, this happens also. Renaming is the same. Here is an example. I tried adding a "2" to the end of the folder name, hit enter and got this. Here I can press cancel, nothing happens. If I press retry, the popup disappears and it'll finally change the folder name. I can't come up with anything for this. Using BitDefender (registered, full protection), Windows 7 x86 Ultimate retail (boxed, english version). The other PC had the same anti-virus protection , but it have a Windows 7 x64. Both systems are activated, updated totally. I don't remember installing any new stuff on the PCs. All the stuff on the PCs are legal, no cracked / any other software present. It just happened, so to say. Already reinstalled the other PC because I thought * I * messed up something and its just something FUBAR. However, I dont want to reinstall my laptop also. Any ideas are welcome. (Today I had a strange bug. Windows Explorer had 1.0+gb memory usage with 100% cpu. Killed it, launched a new explorer.exe and thats all. Nothing changed, but it may worth a try. The other PC did NOT have this problem, ever.) Isn't there a registry fix for this or something? :/

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• Google Apps For Business, SSO, AD FS 2.0 and AD

  - by Dominique dutra

  We are a small company with 22 people in the office. We had a lot of problems with e-mail in the past so I decided to change over to Google Apps for Business. It is the perfect solution for us, except for one thing: I need to be able to control the access to the mailboxes. Only users inside the office, authenticated to AD, or users authenticated to our VPN can connect to gmail. From what I've read it is possible using the SSO (Single Sign On) solution provided by Google - but i am having some trouble finding consistent information about it. First of all, our infrastructure: Windows Server 2008 R2 Active Directory, one domain only. Kerio Control for QoS and VPN. That's about it on our side. On Google Apps' side, I have one account, and 03 domains that my users use to log in. The main domain has most of the users, but the are a couple of people that login using one of the subdomains. I have a 03 domains because I run mail for 03 companies and wanted all to be in within the same control panel. Well, I found some guides on the internet but none of them cover the AD FS installation part. I've read somewhere that I needed to download AD FS 2.0 directly from Microsoft.com, because the one that came with Windows Server was a old version. I downloaded it (adfsSetup.exe) and tried to install but got an error, saying that I needed a Windows Server 2008 Sp2 for that program. My Windows Server 2008 is R2. I really need some help here, this is very importand, I dont want to have to pay $1000 for a SSO solution when i have an AD set up. Can someone please point me out to the right direction? Where can I find an AD FS 2.0 setup compatible with R2 would be a good start, or the one that came with r2 is already the 2.0 version. After the initial setup, there are some guides on the internet about the Google Apps part. It seems to be really easy. I also tried adding AD FS role, but there are a bunch of options wich I have no idea what means, and I coudn't find any guide covering that on the internet. I dont have a lot of experience with Windows Server, but I have a company wich is certificated and provide us with support. I can ask for their help in the later setup, but I dont think ADFS is a very common thing to deal with.

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• Laptop turning off when fan is spinning hard

  - by Ieyasu Sawada

  My laptop seems to have reach its lifespan. Its an Acer laptop so I guess that's normal. But I'd like to hear your opinions about this. My laptop is only 2 years old. I haven't heard the fan spinning like crazy not until these past 5 months. What I did: Hoping that its just the applications that I have installed that's consume the life of my laptop from the background. I used PC Decrapifier to uninstall some of the things that I don't need. Reformatted my computer but only the primary partition since my files are on the second partition. Bought a cooling pad. None of these works. I noticed the fan spins so hard when: I have a lot of browser tabs open. Full screen mode a flash video that I'm viewing online. Using VLC to watch encoded videos. There's this thing called minicoder http://sourceforge.net/projects/minicoder/ to reduce the size of videos without affecting much of the quality. I'm suspecting that it needs additional software(to make life easier for the hardware) even though the video is working fine in VLC. VLC consumes about 300,000K and above(as seen from task manager) while watching videos (.mkv). The problem: Laptop suddenly turns off when the fan spins like crazy for about 20 minutes. I'm always checking to see if its already too hot(using my fingers to feel the side of the laptop) but its not so I continued watching and then poof! computer turns off. Laptop won't turn on immediately when I turn it on after it turning off by itself. The light for the power goes on but its turns off immediately. I have to wait for about 10-20 seconds before it boots up without problems. So how do I go about this? Is this just normal for Acer laptops after about 2 years of heavy usage (8-12 hours a day)? My usage is heavy but I normally only have a text-editor(sublime) and browser open(chrome). Here's what I got from HW monitor:

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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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• How to get wireless working (properly) with Sitecom Wireless USB micro adapter 300N on Windows 7?

  - by Timo

  The question says it all, but more detail follows ;) I've got a new computer that runs Windows 7 64-bits (Home Edition) and I'd like to connect it to my wireless home network (Sitecom wireless gigabit router 300N wl-352 v1 002) with a Sitecom wireless USB micro adaptapter 300 wl-352 V2 001. After installing the router (i.e. connected to the modem and power) and ensuring that wireless is indeed enabled, I've installed the driver of the USB adapter on the new computer described above. After the installation (drivers and utility on CD) completes successfull I rebooted my computer and inserted the USB adapter. After discovering the right network and connecting to it using the network key, a connection is succesfully made. (Using the Sitecom 300N USB Wireless LAN utility). In the LAN utility I can see that the signal strength is approximately 50% and connection quality is approximately 80%. Judging from these numbers I assumed that all was fine and started to use the connection (reading news on nu.nl, a dutch news site), but noticed that the connection was lost several times in a very short time span, but each time the connections was resumed, resulting in the 50/80 percent numbers described above. However, the website was not loaded completely and often a timeout would be reported. When inspecting the drivers through Device Management (Windows' Apparaatbeheer in dutch) there were no errors/warnings; everything seemed to be in order. In an attempt to solve this, I downloaded the latest drivers for the USB adapter, but the problems remained. Finally I tried to connect the computer with a Siemens Gigaset USB Adapter 108. This process was a troublesome since I had to download a driver (from the site above) and tell Windows (7) to use the Windows Vista driver when installing the new hardware, since there is (was) no Windows 7 driver available. This resulted in a usable connection, although not very stable when reconfiguring the router. Which took the form of selecting a different wireless channel on the router, even using the Sitecom utility mentioned above to check if there were other networks communicating on that channel (and thus picking a channel that was not used by other networks). Again no result when changing back to the Sitecom USB adapter. Note that this means (I think) that I could use the internet connection with the Siemens adapter, meaning the problem was not in the router. So: How to get wireless working (properly) with Sitecom Wireless USB micro adapter 300N on Windows 7? PS Sorry, but should be able to post one link, while I had links in place for the USB adapter, router and the siemens adapter in place as well, but I'm not (yet) allowed to post these... (The site says I can post one link, but only when no links are present will it allow me to post the question...)

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• VirtualBox - multiple guests, each with a single bridged adapter?

  - by Martin

  I am running a dedicated server (located at Hetzner, Germany) that runs VirtualBox in order to virtualize several services accross multiple virtual guests. Those guests are supposed to communicate with each other (for instance, a virtual web server has to access a virtual database server); to be reachable from the dedicated server (for instance, SSH access); and to access the Internet via the dedicated server (for instance, to download security updates) Currently, this is achieved by having host-only adapter vboxnet0 on the dedicated server and two virtual interfaces on each guest. There, virtual adapter eth0 is attached to vboxnet0 (to achieve (1) and (2)), virtual adapter eth1 is attached to VirtualBox' NAT (to achieve (3)). Via eth0, the guests have access to a DHCP and a DNS server, both running on the dedicated server (there, bound to vboxnet0). This allows me to assign custom IP addresses and names. Via eth1, VirtualBox pushes a proper route that enables each guest to access the Internet (via eth0 on the dedicated server). This setup with two virtual adapters frequently leads to problems and at leasts complicates many things. For instance, on the dedicated server there is OpenVPN which allows to access the virtual machines via the Internet; futhermore, there is Shorwall that controls the incoming and outgoing network traffic between the Internet, the dedicated server, and the individual virtual machines. Not to mention automatic installation of servers via PXE... Therefore, I would prefer to have only one single virtual adapter on each guest which would be used for both incoming and outgoing connections. As far as I understand, one would basically use a bridged interface for that very purpose. Now the question arises: Which interface on the dedicated server would the bridge use? eth0 on the host server is not an option, as this is prohibited by the provider. A virtual interface eth0:0 would not make any sense, as a bridge always uses a physical interface (eth0 in this case). Would it be possible to create a bridged interface in each virtual machine that would "dangle in the air"? Thus, without a complement on the dedicated server? How would I have to set up the routing on the host server? Please note that the host / dedicated server has only one network adapter (eth0) which is connected to the provider's network. Regards, Martin

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• pam_unix(sshd:session) session opened for user NOT ROOT by (uid=0), then closes immediately using using TortiseSVN

  - by codewaggle

  I'm having problems accessing an SVN repository using TortoiseSVN 1.7.8. The SVN repository is on a CentOS 6.3 box and appears to be functioning correctly. # svnadmin --version # svnadmin, version 1.6.11 (r934486) I can access the repository from another CentOS box with this command: svn list svn+ssh://[email protected]/var/svn/joetest But when I attempt to browse the repository using TortiseSVN from a Win 7 workstation I'm unable to do so using the following path: svn+ssh://[email protected]/var/svn/joetest I'm able to login via SSH from the workstation using Putty. The results are the same if I attempt access as root. I've given ownership of the repository to USER:USER and ran chmod 2700 -R /var/svn/. Because I can access the repository via ssh from another Linux box, permissions don't appear to be the problem. When I watch the log file using tail -fn 2000 /var/log/secure, I see the following each time TortiseSVN asks for the password: Sep 26 17:34:31 dev sshd[30361]: Accepted password for USER from xx.xxx.xx.xxx port 59101 ssh2 Sep 26 17:34:31 dev sshd[30361]: pam_unix(sshd:session): session opened for user USER by (uid=0) Sep 26 17:34:31 dev sshd[30361]: pam_unix(sshd:session): session closed for user USER I'm actually able to login, but the session is then closed immediately. It caught my eye that the session is being opened for USER by root (uid=0), which may be correct, but I'll mention it in case it has something to do with the problem. I looked into modifying the svnserve.conf, but as far as I can tell, it's not used when accessing the repository via svn+ssh, a private svnserve instance is created for each log in via this method. From the manual: There's still a third way to invoke svnserve, and that's in “tunnel mode”, with the -t option. This mode assumes that a remote-service program such as RSH or SSH has successfully authenticated a user and is now invoking a private svnserve process as that user. The svnserve program behaves normally (communicating via stdin and stdout), and assumes that the traffic is being automatically redirected over some sort of tunnel back to the client. When svnserve is invoked by a tunnel agent like this, be sure that the authenticated user has full read and write access to the repository database files. (See Servers and Permissions: A Word of Warning.) It's essentially the same as a local user accessing the repository via file:/// URLs. The only non-default settings in sshd_config are: Protocol 2 # to disable Protocol 1 SyslogFacility AUTHPRIV ChallengeResponseAuthentication no GSSAPIAuthentication yes GSSAPICleanupCredentials yes UsePAM yes AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE AcceptEnv XMODIFIERS X11Forwarding no Subsystem sftp /usr/libexec/openssh/sftp-server Any thoughts?

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• Ubuntu 12.04 crash analysis - strange binary data on all open files at the moment of crash

  - by lanbo

  A couple of hours ago we got a system crash on Ubuntu 12.04. We checked all the log files and there is nothing suspicious to blame to. Last stuff that was logged was some dovecot activity. There are no kernel panic messages. Nothing. It is a new server (new hardware) we are testing before production. And because it is new hard, I'm suspicious the problem may be due to some faulty hardware. We already run memtester with no problem detected. I'll be happy to hear from other hardware testing tools (the machine has SSD). Anyway, the thing I wanted to ask you is a different one. The strange thing is on every open file at the moment of the crash we found the next sequence of symbols was written into them: "@^@^@^@^@^@^@...". For example, on the syslog log file we got: Apr 16 15:53:56 odyssey dovecot: pop3-login: Aborted login (auth failed, 1 attempts): user=<info>, method=PLAIN, rip=46.29.255.73, lip=5.9.58.177 ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^ [these continues for about 1000 chars...] ^@^@^@^@Apr 16 15:55:12 odyssey kernel: imklog 5.8.6, log source = /proc/kmsg started. We got all these symbols in all open files. These include: syslog, mail.log, kern.log, ... But also on some logs that are output by php scripts run in CRONs from user accounts (not root). So, any idea why all open files got these characters written during the crash? This is pretty bad since the crash corrupted many files (we don't even know which other ones may be affected). We are suspicious that all open files (in write mode maybe) at the moment of the crash got all these symbols inserted. Why is that? BTW [in case it helps], the system automatically rebooted after the crash but Apache did not start. There were not traces in /var/apache2/*log why apache did not start. After running a "service apache2 start" it started with no problems. Also, we rebooted the machine manually and Apache also started on reboot. But it did not start after the crash and no errors were reported. Thanks guys!

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• WIndows 7 cannot boot - bootrec reports FS not found or corrupt

  - by purecharger

  For 3 days now I've been unable to boot into my Windows 7 partition, and all my research has been to no avail. I'm hoping someone here has more ideas on how to fix this. When I boot up now, I get the black screen with BCD error that says theres no valid file system or it may be corrupt (pardon my lack of detail, no copy/paste is available then). When I boot with the Windows 7 disc and go into repair tools, no operating system is found, and attempting to automatically repair the problem fails with Unknown Operating System (Unknown Disk) or something similar. When I drop into the command prompt, I am able to see and navigate my C:\ drive without issue. I attempt to use bootrec: C:\> bootrec /ScanOS Finds C:\Windows as a system partition. C:\> bootrec /RebuildBCD Fails with volume does not contain a recognized file system. please make sure that all required file system drivers are loaded and that the volume is not corrupted. So then I attempt to fix the bootsector: C:\> bootsect /nt60 C: /force Which completes successfully (sorry, no output..) Upon rebooting, I have the same problem. I've also tried all of the above after making my Windows partition active: C:\> diskpart DISKPART> select disk 1 DISKPART> select partition 1 DISKPART> active DISKPART> exit Then bootrec as above, both with and without a reboot after the DISKPART commands. Then I've also tried rebuilding the BCD store by hand: set systemdrive=C: set tempbcd=C:\boot\bcd.temp set tempfile=C:\boot\temp.txt bcdedit -createstore %tempbcd% bcdedit.exe -store %tempbcd% -create {bootmgr} -d "Windows Boot Manager" bcdedit -store %tempbcd% -create -d "Windows Vista" -application osloader>%tempfile% set /p winvistaguid= <%tempfile% set winvistaguid=%winvistaguid:~10,38% bcdedit -store %tempbcd% -set %winvistaguid% osdevice partition=%systemdrive% bcdedit -store %tempbcd% -set %winvistaguid% device partition=%systemdrive% bcdedit -store %tempbcd% -set %winvistaguid% path \Windows\system32\winload.exe bcdedit -store %tempbcd% -set %winvistaguid% systemroot \Windows bcdedit -import %tempbcd% However on the import, I get my familiar friendly message: volume does not contain a recognized file system. please make sure that all required file system drivers are loaded and that the volume is not corrupted I'm at my wits end here, and I cannot understand why Windows refuses to see this as a valid install. When I list the disk/partition in DISKPART, it shows up as NTFS and "Healthy", and I can navigate the directory structure from DOS with no problems. I really, really do not want to reformat and reinstall. I know this problem can be solved!

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• Why do some games randomly turn my screen a random solid color?

  - by Emlena.PhD

  When playing some games my computer will randomly have an error that I cannot fix without turning it off and back on again. The screen changes to one solid color, which varies (off the top of my head I can remember seeing solid green, magenta, etc..) and the sound blares a single tone. The sound sometimes briefly restores and I can still hear the game sounds and even hear and still be heard by people in my Mumble channel, but the screen doesn't right itself so I'm still blind. What's more is this happens in some games but not in others. While the game is actually running, not while I'm still in the menu. However, it does happen if I'm afk or idle but the game world is still rendering. Games where the error occurs: League of Legends World of Warcraft Trine The Sims 2 Dungeon Defenders Safe games: games where it has never occurred: Tribes: Ascend Star Wars: the Old Republic Battlefield 3 So relatively older games cause the problem while newer games do not? I cannot predict when it will happen, it just seems random. However, if it happens and I try playing the same game further after restart it does appear to occur more frequently after the first time. But if I switch to a safe game it doesn't continue happening. Both of my RAM sticks appear fine, flipped position or either one on their own and games still run, computer still boots. I would think over-heating, but then why not all games? ALso, sometimes it happens immediately after I start playing, within seconds of the 3D world booting up. I'm looking to upgrade very soon so I want to figure out what component or software is fubar and replace/repair it. Any suggestions or recommendations of tools would be helpful. Below is some system information. Dxdiag does not detect any problems. Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.120305-1505) System Manufacturer: Gigabyte Technology Co., Ltd. System Model: EP45-UD3R BIOS: Award Modular BIOS v6.00PG Processor: Intel(R) Core(TM)2 Duo CPU E8500 @ 3.16GHz (2 CPUs), ~3.2GHz Memory: 4096MB RAM DirectX Version: DirectX 11 DxDiag Version: 6.01.7601.17514 64bit Unicode Graphics card name: NVIDIA GeForce GTX 285 Driver Version: 8.17.12.9610 (error has occurred w/several driver versions) Sound: I do not have a sound card, been using motherboard's built in sound)

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• How to move Mailboxes over from old Exchange 2007 to new EBS 2008 network?

  - by Qwerty

  Hi all, This q is similar to: http://serverfault.com/questions/39070/how-to-move-exchange-2003-mailbox-or-store-from-2003-to-2007-on-separate-networks Basically I am trying to move our exchange mailboxes over to a test domain that is hosting EBS2008 with Exchange 2007. We plan to move as soon as we can when we have our exchange data over. I have tried moving a db with mailboxes over but cannot get it to mount in the new Exchange in any way possible, including mounting it onto a recovery store. From my understanding the ONLY prerequisite for moving Exchange DBs across is that it must have the same Organizational name (unlike previous versions of Exchange). If anyone has any insight as to why I cannot mount and simply reattach the mailboxes, please give me an idea as to what could be wrong. It should be as simple as this. Note that the DBs I have are in a clean state. I cannot use ExMerge because I am not running any mailboxes on 2003. I have also tried using a 32bit Vista machine with the Export-Mailbox cmdlet to extract mailboxes but anything I do to it results in Permission errors. I have tried to troubleshoot these with no success. I am running in full admin with proper exchange roles and yet it still gives me access denied errors: Export-Mailbox : MapiExceptionNetworkError: Unable to make admin interface conn ection to server. (hr=0x80040115, ec=-2147221227) Also some errors show in the management console: get-MailboxDatabase Completed Warning: ERROR: Could not connect to the Microsoft Exchange Information Store service on server TATOOINE.baytech.local. One of the following problems may be occurring: 1- The Microsoft Exchange Information Store service is not running. 2- There is no network connectivity to server TATOOINE.baytech.local. 3- You do not have sufficient permissions to perform this command. The following permissions are required to perform this command: Exchange View-Only Administrator and local administrators group for the target server. 4- Credentials have been cached for an unpriviledged user. Try removing the entry for this server from Stored User Names and Passwords. Why I have to use a 32bit machine to export a simple .pst file is beyond me... So yeah I am now out of ideas and any help would be great! Thanks in advance.

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• How to get an inactive RAID device working again?

  - by Jonik

  After booting, my RAID1 device (/dev/md_d0 *) sometimes goes in some funny state and I cannot mount it. * Originally I created /dev/md0 but it has somehow changed itself into /dev/md_d0. # mount /opt mount: wrong fs type, bad option, bad superblock on /dev/md_d0, missing codepage or helper program, or other error (could this be the IDE device where you in fact use ide-scsi so that sr0 or sda or so is needed?) In some cases useful info is found in syslog - try dmesg | tail or so The RAID device appears to be inactive somehow: # cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md_d0 : inactive sda4[0](S) 241095104 blocks # mdadm --detail /dev/md_d0 mdadm: md device /dev/md_d0 does not appear to be active. Question is, how to make the device active again (using mdmadm, I presume)? (Other times it's alright (active) after boot, and I can mount it manually without problems. But it still won't mount automatically even though I have it in /etc/fstab: /dev/md_d0 /opt ext4 defaults 0 0 So a bonus question: what should I do to make the RAID device automatically mount at /opt at boot time?) This is an Ubuntu 9.10 workstation. Background info about my RAID setup in this question. Edit: My /etc/mdadm/mdadm.conf looks like this. I've never touched this file, at least by hand. # by default, scan all partitions (/proc/partitions) for MD superblocks. # alternatively, specify devices to scan, using wildcards if desired. DEVICE partitions # auto-create devices with Debian standard permissions CREATE owner=root group=disk mode=0660 auto=yes # automatically tag new arrays as belonging to the local system HOMEHOST <system> # instruct the monitoring daemon where to send mail alerts MAILADDR <my mail address> # definitions of existing MD arrays # This file was auto-generated on Wed, 27 Jan 2010 17:14:36 +0200 In /proc/partitions the last entry is md_d0 at least now, after reboot, when the device happens to be active again. (I'm not sure if it would be the same when it's inactive.) Resolution: as Jimmy Hedman suggested, I took the output of mdadm --examine --scan: ARRAY /dev/md0 level=raid1 num-devices=2 UUID=de8fbd92[...] and added it in /etc/mdadm/mdadm.conf, which seems to have fixed the main problem. After changing /etc/fstab to use /dev/md0 again (instead of /dev/md_d0), the RAID device also gets automatically mounted!

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• Operative systems on SD cards

  - by HisDudeness

  I was getting some wild ideas the last days, like putting some operative systems into SD cards rather than on my hard drive. I'll go further into details now and explain what lead me to consider this probably abominable decision. I am on a laptop (that means I have a native SD-card reader) which is currently running a cross-distro setup, with a bunch of Linux systems (placed in dedicated ext4 logical partitions into a huge extended one) regulated by an unique GRUB. Since today, my laptop haven't even seen any Windows system with binoculars. I was thinking about placing all the os part of my setup into a Secure Digital to save all my 500 Gb Hard Drive for documents, music, videos and so on, and being able to just remove the SD and boot my system into another computer too, as well as having the possibility of booting other systems into mine by just plugging in another SD, without having to keep it constantly placed in my PC. Also, in the remote case in the near future I just wanted to boot Windows 8 in it, I read it causes major boot incompatibility issues with other systems by needing a digital signature in order for them to start. By having it in a removable drive, I could just get rid of it when I'm needing him and switch its card with Linux one, and so not having any obstacles to their boot. Now, my questions are: I know unlikely traditional rotating disk drives, integrated circuits ones have a limited lifespan in terms of cluster rewriting. Is it an obstacle to that kind of usage? I mean, some Ultrabooks are using SSD now, is it the same issue, or there are some differences between Solid State Drives and Secure Digitals in that sense? Maybe having them to store system files which are in fixed positions (making the even-usage of cluster technology useless) constantly being re-read and updated and similar things just gets them soon unserviceable, do it? Second question: are all motherboards and BIOSes able to boot from SDs just like they are from USB pen drives (I mean, provided card reader is USB-connected, isn't it)? Or can't bootloaders like GRUB be installed on SDs working? If they can't, is it a solution installing GRUB to MBR and making boot option pointing to SD? Will it work? Are there any other problems to installing OSs on a Secure Digital?

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• Cygwin's RSYNC for large data transfer

  - by Tim Brigham

  I'm using rsync from Cygwin to do a large scale data transfer from an aging HP MSA 1000 to a new DAS attached to a different server. I have a daemon running on the remote server in read only mode and a local copy writing the files to disk. One of my servers is an image repository with over a million files spread across about 300 directories. Each file averages only a couple hundred kilobytes. More so than any other box this one is proving problematic. The rsync process will work for a while - some times 20 minutes, some times an hour - and then it simply quits and sits idle at a given file name. I have verified that the file isn't corrupt on the remote server and that the file is successfully created on the local drive. I ran the rsync client in -vv mode, which returns nothing. I checked out the logs created by the daemon. I looked at the network utilization on the interface, which is sitting idle. I looked at the AV settings to see if anything could pose a problem there. I even updated to the latest release of Cygwin. What do I need to in order to keep this connection up? EDIT: The client system is using the command rsync.exe server::Drives/f/Repo/ /cygdrive/T/Repo --archive -P -vv The server is using the command rsync.exe --daemon --no-detach --config "rsyncd.conf" The contents of rsyncd.conf: use chroot = false strict modes = false hosts allow = 192.168.100.9 log file = c:/rsyncd.log uid=0 gid=0 [Drives] path = /cygdrive read only = yes EDIT: The file server is 2003, the disk type on the array is GPT and the size is of the array is about 4 TB. EDIT: Stranger.. It looks like the process is reliably erroring out at about 175,000 files. Rsync runs fine when I pick the same directory it has problems with one at a time. EDIT: rsync version 3.0.9 protocol version 30 Copyright (C) 1996-2011 by Andrew Tridgell, Wayne Davison, and others. Web site: http://rsync.samba.org/ Capabilities: 64-bit files, 64-bit inums, 32-bit timestamps, 64-bit long ints, no socketpairs, hardlinks, symlinks, IPv6, batchfiles, inplace, append, ACLs, xattrs, iconv, symtimes A similar failure occurred when going from the same set of files with Cygwin to a Linux install. It didn't happen until several hours later than normal however.

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• Mercurial browser on Windows 2003 takes several refreshes before displaying repositories

  - by Tim Murphy

  When attempt to browse my Mercurial repositories it usually takes several refreshes before the repository list is displayed. The configuration is as follows: Windows Server 2003 (Dedicated machine hosted by http://www.server4you.com/. Site has anonymous password protection with self-signed SSL. Mercurial 1.5.3 Python 2.6.5 Python for Windows 32 extensions 214 py2.6 isapi-wsgi 0.4.2 The repositories are being served via ISAPI using the standard hgwebdir_wspi.py file (copy to follow). Other problems with the repository server: Before doing a clone/push/etc I have to browse the repositories first otherwise hg on my local machine can not locate the site. I have one a repository with a large changeset that after a minute or so throw error "abort: error: An existing connection was forcibly closed by the remote host". Will be asking another question for this problem. What can I do to start tracking down this problem? hgwebdir_wsgi.py # Configuration file location hgweb_config = r'C:\Public\Mercurial\WebSite\hgweb.config' # Global settings for IIS path translation path_strip = 0 # Strip this many path elements off (when using url rewrite) path_prefix = 0 # This many path elements are prefixes (depends on the # virtual path of the IIS application). import sys # Adjust python path if this is not a system-wide install #sys.path.insert(0, r'c:\path\to\python\lib') # Enable tracing. Run 'python -m win32traceutil' to debug if hasattr(sys, 'isapidllhandle'): import win32traceutil # To serve pages in local charset instead of UTF-8, remove the two lines below import os os.environ['HGENCODING'] = 'UTF-8' import isapi_wsgi from mercurial import demandimport; demandimport.enable() from mercurial.hgweb.hgwebdir_mod import hgwebdir # Example tweak: Replace isapi_wsgi's handler to provide better error message # Other stuff could also be done here, like logging errors etc. class WsgiHandler(isapi_wsgi.IsapiWsgiHandler): error_status = '500 Internal Server Error' # less silly error message isapi_wsgi.IsapiWsgiHandler = WsgiHandler # Only create the hgwebdir instance once application = hgwebdir(hgweb_config) def handler(environ, start_response): # Translate IIS's weird URLs url = environ['SCRIPT_NAME'] + environ['PATH_INFO'] paths = url[1:].split('/')[path_strip:] script_name = '/' + '/'.join(paths[:path_prefix]) path_info = '/'.join(paths[path_prefix:]) if path_info: path_info = '/' + path_info environ['SCRIPT_NAME'] = script_name environ['PATH_INFO'] = path_info return application(environ, start_response) def __ExtensionFactory__(): return isapi_wsgi.ISAPISimpleHandler(handler) if __name__=='__main__': from isapi.install import * params = ISAPIParameters() HandleCommandLine(params) hgweb.config [paths] / = C:\Public\Mercurial\Repositories\* [web] allow_archive = bz2 gz zip ; Allows archive downloads. allow_push = ######## ; Users that are allowed to push.

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• Why can't I connect to remote Microsoft SQL Server through SSH tunnel?

  - by Alexander

  I have at home a D-Link DIR-615 C1 router with DD-WRT. I set up the SSH server on the router, and log on through an SSH2-RSA passphrase-protected key. That router is the gateway between the local network and the internet. One of the computers on that network has Microsoft SQL Server 2008 installed, with TCP/IP protocol enabled through port 1433. I've set up port forwarding on the router, so that remote connections are possible and are, in fact, working (some developers log on remotely without problems). I am part of another network, that has internet access through a proxy server, which only has ports 80 and 443 opened. I can't connect to that MSSQL server on that remote server because 1433 port is closed on this network. I connected (using Putty) through 443 port to my router's SSH server, and set up 2 tunnels. One is for RDP (3389), and it's working. The other is for 1433 port, to connect to the server. I can't connect through the SSH tunnel to the MS SQL Server, neither through telnet, or through GUI clients. Am I missing something? Additional details: on connect, I get this error from SQL Server Management Studio: TITLE: Connect to Server Cannot connect to localhost:14330. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 3) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=3&LinkId=20476 BUTTONS: OK The tunnel is configured like this: L14330 192.168.0.103:1433 192.168.0.103 is the permanent address of the SQL Server on the LAN. I also successfully forwarded TCP traffic of 3389 port to that IP, so tunneling is working to that IP address. When connecting without tunnel, through Microsoft SQL Server Management Studio, using the same method the connection establishes. Too bad my proxy doesn't allow 1433 port traffic, I wouldn't have this headache.

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• Kernel-mode Authentication: 401 errors when accessing site from remote machines

  - by CJM

  I have several Classic ASP sites that use Integrated Windows Authentication and Kerberos delegation. They work OK on the live servers (recently moved to a Server 2008/IIS7 servers), but do not work fully on my development PC or my development server. The IIS on both machines were configured through an IIS web deployment tool package which was exported from an old machine; the deployment didn't work perfectly, and I had to tinker a bit to get the sites working. When accessing the apps locally on either machine, they work fine; when accessing from another machine, the user is prompted by a username/password dialog, and regardless of what you enter, ultimately it results in a 401 (Unauthorised) error. I've tried comparing the configuration of these machines against similar live servers (that all work fine), and they seem generally comparable (given that none of the live servers are yet on IIS7.5 (Windows 7/Server 2008 R2). These applications run in a common application pool which uses a special domain user as it's identity - this user has similar permissions on the live and development machines. On IIS6 platforms, to enable kerberos delegation, I needed to set up some SPNs for this user, and they are still in place (even though I don't believe they are needed any longer for IIS7+ due to kernel-mode authentication), Furthermore, this account is enabled for Kerberos delegation in Active Directory, as is each machine I am dealing with. I'm considering the possibility that the deployment might have made changes/failed to make changes to the IIS configuration thus causing this problem. Perhaps a complete rebuild (minus another web deployment attempt) would solve the problem, but I'd rather fix (thus understand) the current problem. Any ideas so far? I've just had another attempt at fixing this issue, and I've made some progress, but I don't have a complete fix...yet. I've discovered that if I access the sites via IP address (than via NetBIOS name), I get the same dialog, except that it accepts my credentials and thus the application works - not quite a fix, but a useful step. More interestingly, I discovered that if I disable Kernel-mode authentication (in IIS Manager Website Authentication Advanced Settings), the applications work perfectly. My foggy understanding is that this is effectively working in the pre-IIS7 way. A reasonable short-term solution, but consider the following explicit advice from IIS on this issue: By default, IIS enables kernel-mode authentication, which may improve authentication performance and prevent authentication problems with application pools configured to use a custom identity. As a best practice, do not disable this setting if Kerberos authentication is used in your environment and the application pool is configured to use a custom identity. Clearly, this is not the way my applications should be working. So what is the issue?

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