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• Windows Server 2008 R2, SQL Server 2008 R2, and Registry Backups

  - by charliedigital

  Hi folks! As a developer, I've installed various instances of SQL Sever (2000, 2005, 2008, R2) from all the ways back to 2003 and I've never had an install fail on me....until yesterday. I was installing SQL Server 2008 R2 onto a Windows Server 2008 R2 hosted virtual server and the install finished, but failed on every component. To make matters worse, it was in a state in which I could not uninstall it either, even using command line options! I dug around a bit, but didn't get very far with it. The error is enigmatic and Google didn't turn up much hope. So today, I am going to try again after having the VM image wiped overnight. My question is how can I guard against the same failure today? I don't mind if it fails, but then I know it may be something wrong with the base image I'm getting from the hosting company. I really don't feel like paying another $20 to wipe the VM and I have no idea why it failed. Is it enough for me to backup the registry so that I can restore it in case it fails? What about the installation files? Do I need to have a tool to clean that out, too? Sorry, I'm no sys admin so no real experience with backup/restore aside from System Restore! So any advice would be appreciated!

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• Symfony2 app in subdirectory nginx

  - by Frido

  I'm trying to setup a symfony2 app in a subdirectory of our Server Webserver: nginx 1.1.6 + php fpm OS: gentoo my target is to get the app working from a subdirectory subdomain.xy.domain.tld/tool my nginx config looks like that server { listen 80; server_name subdomain.xy.domain.tld; error_log /var/log/nginx/subdomain.xy.error.log info; access_log /var/log/nginx/subdomain.xy.access.log main; location /tool { root /var/www/vhosts/subdomain.xy/tool/web; index app.php; location ~ \.php($|/) { include fastcgi_params; set $script $uri; set $path_info ""; if ($uri ~ "^(.+\.php)($|/)") { set $script $1; } if ($uri ~ "^(.+\.php)(/.+)") { set $script $1; set $path_info $2; } fastcgi_param SCRIPT_FILENAME /var/www/vhosts/subdomain.xy/tool/web$fastcgi_script_name; #fastcgi_intercept_errors on; fastcgi_pass 127.0.0.1:9000; fastcgi_param SCRIPT_NAME $script; fastcgi_param PATH_INFO $path_info; } } } I have really no clue how to do this... I've searched the web for hours and tried dozens of different configs but nothing worked. I hope someone has an idea =)

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• How to compare old laptop to new laptop?

  - by Lasse V. Karlsen

  I hope this question doesn't get closed at once :) I have an old laptop, a Compaq NC4200, which is going its final laps around the track these days. Battery is dead, and everything kinda runs slow. It also has only 1GB of memory, and even though I don't know if it can take more, I probably wouldn't be able to get hold of any that matches without having to special order it. The size, however, has been ideal for my usage pattern, so I'm looking to replace it with a similarly sized laptop, at least in the same size category. However, it's been a while since I tried keeping track of CPUs, so I have a question. The old laptop has a Intel Pentium M 760 1.86GHz processor. One laptop I found online has a Intel Pentium SU4100 1.3GHz dual-core. This type of processor seems to be quite common in the price and size-range I've been looking. What kind of relative performance boost could I expect from the old one to the new one? I am not expecting a "about 7.45x speed", but some indication would be nice. For instance, dual-core tells me it might be akin to 2.6GHz, but I assume I can't simply compare 1.86GHz to 2.6GHz and expect the new one to run about 1.4x as fast, I expect more these days. Or is that unrealistic for this kind of processor? Do I need to up my price range and go for a 2+ GHz processor?

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• XP machines on Domain not reporting WMI Data in a 2003 Server Environment

  - by Az

  I am running into a very quirky issue and I hope someone out there can help. We use a monitoring program for several networks we oversee that is WMI data dependent for a great deal of it's functionality. The Windows 2000 Professional workstations, as well as the 2003 servers in our network report WMI data fine, the Windows XP professional machines will not let me view them from within the WMI snap in for MMC (they return a Win32: Access Denied) error. I am of course logged in with an account with domain admin privileges on the domain controller when I attempt it. DCOM is enabled in component services, and the remote security option is set to allow as well. If we remove the machine from the domain and rejoin it, some workstations will show up as WMI enabled temporarily and then when I try to access them again later I get the access denied error again out of the blue. Hoping someone out there has had a similar problem or they have advice. I have had this problem with the firewall turned on or off. Thanks for your time! -Az

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• PHP-FPM and APC for shared hosting?

  - by Tiffany Walker

  We are looking into finding a way to get APC to only create one cache per account / site. This can be done with Fastcgi (last update 2006…) but with Fastcgid APC will have to create multiple caches for multiple processes run by the same account. To get around this problem, we have been looking into PHP-FPM PHP process manager allows multiple PHP processes to share a single APC cache. But from what I have read (I hope I'm wrong) , even if you create a pool per process, all sites accross all pools will share the same APC cache. This brings us back to the same problem as with shared Memcached: it's not secure ! On php-fpm's site I read that you can chroot php-fpm pools and define a specific UID and GID per pool… if this is the case then shouldn't APC have to use this user and not have access to other pools cache ? An article here (in 2011) suggests that you would need to run one process per pool creating multiple launchers on different ports and different config files with one pool per config file : http://groups.drupal.org/node/198168 Is this still neceessary ? If so what would be the impact of running say 800 processes of php-fpm ? Would it be mainly memory ? If so how can I work out what the memory impact would be ? I guess that it would be better to run 800 times php-fpm then to have accounts creating multiple APC caches for a single site ? If on average an account creates a 50MB cache and creates 3 caches per account that makes 150Mb per account which makes 120GB… However if each account uses on average only 50Mb that would make 40GB We will have at least 128GB of ram on our next server so 40GB is acceptable if running 800 x PHP-FPM does not create an overhead of more than 20GB ! What do you think is PHP-FPM the best way to go to provide secure APC cache on shared hosting with a server that has a decent amount of memory ? Or should I be looking at another system ? Thanks !

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• How to actually defragment a JFFS2 filesystem

  - by Julie in Austin

  I have searched all over the Internet, including on a number of StackExchange forums, for a workable method for defragmenting a JFFS2 filesystem and cannot find an answer. The system in question has a 256MB NAND flash part. It is being accessed as a MTD device which is divided into three partitions. The third partition is where the root file system is being stored as a JFFS2 file system. The issue is that writes to the root file system have non-deterministic performance due to the usual issues of the JFFS2 garbage collector deciding to run at the worst possible times. When that happens, the product is hung for some unknown length of time while the garbage collector (and pdflush) run. Changing the file system isn't an option. The solution needs to be something that can run during off-hours that after having been run results in more predictable write performance. Right now I am working on a program that will attempt to force the garbage collector to run, then delete the file with the hope that all of the freed nodes are suddenly more readily available and make writes perform better. Thoughts?

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• Looking for USB Network Attached Storage (NAS) Adapter that supports multiple drives, NTFS/FAT32 fil

  - by braveterry

  I'm looking for a NAS Adapter that supports attaching multiple USB devices to the network. Here's what I'd like to see in a NAS adapter: Under $100.00. Support for multiple devices. This can be through a USB hub or through multiple USB connectors on the device itself. Bittorrent support would be nice, but this isn't a deal-breaker. Filesystem support for at least NTFS or FAT32. I'd prefer to not have to reformat to use the device, but this is also not a deal-breaker. Here is what I am NOT looking for: I'm NOT looking for a NAS enclosure. I already have a couple of spare external USB drives that I'd like to use. I'm NOT looking for a networked USB hub like the one mentioned here. Network USB hubs only allow access to a drive from one PC at a time. I'm NOT looking for a wireless router with a NAS built in. I already have a wireless router, and I'd rather not go through the hassle of replacing it if possible. What I've looked at so far PogoPlug: This supports multiple devices via a USB hub, but there's not Bittorrent support. It's $99.00, so I may end up going with this and hope that they patch in Bittorrent support later. Addonics NAS Adapter: This supports only one device per adapter, so it's a non-starter. SimpleNET NAS Head USB 2.0 Portable Dongle: I'm not 100% sure this supports multiple devices. Plus there doesn't seem to be any Bittorrent support. I'll try to update this post as I explore other devices.

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• Windows Clients: Windows or Linux Domain Controller?

  - by Ramon Marco Navarro

  I'm planning to set up a domain controller for our small computer laboratory. I'm a little confused as to what operating system to use for our domain controller. What's in the lab: The lab has 25 units running a mix of Windows 7 and Windows XP. The domain controller will only have 2GB of RAM running a C2D E7200. (Is this enough?) What we want: The Domain Controller will also be running a git server. The Domain Controller will also be used as a general development machine (mostly Java, PHP). A way to centralize the updates for the windows clients, so that they won't have to download the same patches from the remote site. The machines would just query them from the local domain controller and get the updates from there. Our head recommended that I virtualize a Windows Server 2008 system under a Linux host and use the former as a domain controller and the latter for development or the other way around. A comparison of the advantages and disadvantages of using a Linux distribution or Windows Server 2008 in this situation would also be appreciated. As you may have noticed by now, I'm kinda new to setting up a domain so I hope you guys will be able to help me. Thank you.

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• Exchange 2003: Fresh install, couple noob questions.

  - by Eli

  Hi All, Thanks for reading! I have a small network set up for a local office here, and have a fresh install of Exchange 2003 on our sole-server PDC. The network uses one domain, call it ourdomain.net, which is DNSed locally, but not DNSed for the actual domain, so ourdomain.net works from within the network, but from outside, it's just pointed to some domain parking. I have a completely different domain, call it emaildomain.com, which is currently setup for our website and email, which is hosted with a standard hosting company. We've been using a combination of Thunderbird and Outlook (with local .pst files) for email. I've been asked to setup Exchange to work with our email, but am not familiar with it. The install seems to have gone just fine. The question is: How do I get email from a domain outside our network to work with the exchange server? Do I need to move the email for that domain to point to our local server (I so hope not!), or can I just set exchange so somehow slurp mail from the existing mailboxes on our host for that domain's mail? Or are there better ideas I don't know to ask for? Any help very appreciated - thanks!

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• Google Apps for Domains, Multiple Domains

  - by belliez

  I have a primary google apps for domains account which I use for my personal email, calender, docs etc and is great. I also receive my pop3 company email via settings-Get mail from other accounts in my account. Due to spam I want to make use of gmail servers for my company email and have two options: [1] Add my second domain as a domain alias [2] Create a new apps for domains account If I do [1] above do I access (send and receive) my company email as if it was a separate account or is it merged into my primary domain. I want the two seperated. If I perform [2] can I share my contacts / calender between the two? I also have Act! contact manager which syncs to my primary domain and it is getting messy now with personal and work contacts being changed / sync'd to my Act CM software. I want to try and separate my personal and work contacts (but make the work them avaiable in my primary domain). Hope this makes sense! Your suggestions are gratefully accepted. Thank you

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• ERROR: Can't find the archive-keyring

  - by 23tux

  I'm trying to upgrade my Debian Lenny to Squeeze. I've replaced the word lenny to squeeze in sources.list and ran apt-get clean apt-get update apt-get dist-upgrade But after a while, I get this error Preconfiguring packages ... Setting up debian-archive-keyring (2010.08.28) ... ERROR: Can't find the archive-keyring Is the ubuntu-keyring package installed? dpkg: error processing debian-archive-keyring (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: debian-archive-keyring E: Sub-process /usr/bin/dpkg returned an error code (1) So I tried to install apt-get -f install debian-archive-keyring and I got the same error. Then I tried to install apt-get -f install ubuntu-keyring and I got this error: Reading package lists... Done Building dependency tree Reading state information... Done Package ubuntu-keyring is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package ubuntu-keyring has no installation candidate Maybe I have the wrong sources in my sources.list: deb ftp://mirror.hetzner.de/debian/packages squeeze main contrib non-free deb ftp://mirror.hetzner.de/debian/security squeeze/updates main contrib non-free deb http://ftp.de.debian.org/debian/ squeeze main non-free contrib deb-src http://ftp.de.debian.org/debian/ squeeze main non-free contrib deb http://security.debian.org/ squeeze/updates main contrib non-free deb-src http://security.debian.org/ squeeze/updates main contrib non-free Hope anyone can help me, thx, tux

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• APC + FPM memory fragmentation without a reason

  - by palmic

  My setup @ debian 6-testing is: nginx 1.1.8 + php 5.3.8 + php-fpm + APC 3.1.9 Because i use automatic deployment with apc_clear_cache() after deploy, my target is to set up APC to cache all my project (up to 612 php files smaller than 1MB) without files changes checking. My confs: FPM: pm.max_children = 25 pm.start_servers = 4 pm.min_spare_servers = 2 pm.max_spare_servers = 10 pm.max_requests = 500 APC: pc.enabled="1" apc.shm_segments = 1 apc.shm_size="64M" apc.num_files_hint = 640 apc.user_entries_hint = 0 apc.ttl="7200" apc.user_ttl="7200" apc.gc_ttl="600" apc.cache_by_default="1" apc.filters = "apc\.php$,apc_clear.php$" apc.canonicalize="0" apc.slam_defense="1" apc.localcache="1" apc.localcache.size="512M" apc.mmap_file_mask="/tmp/apc-php5.XXXXXX" apc.enable_cli="0" apc.max_file_size = 2M apc.write_lock="1" apc.localcache = 1 apc.localcache.size = 512 apc.report_autofilter="0" apc.include_once_override="0" apc.coredump_unmap="0" apc.stat="0" apc.stat_ctime="0" The problem is i have my APC memory fragmented into 5 pieces at 14,5MB loaded into memory which capacity is 64M. My system memory is 640MB, used about 270MB at most. The http responses lasts about 300ms - 5s. When i switch on apc.stat="1", the responses are about 50ms - 80ms which is quite good, but i cannot understand why is apc.stat="0" so much whorse. The APC diagnostic tool shows "1 Segment(s) with 64.0 MBytes (mmap memory, pthread mutex Locks locking)" in general cache information window so i hope i am right that it's mmap setup which allows tweaking APC shm onto upper values than shows system limit in /proc/sys/kernel/shmmax (my shows 33MB).

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• Migrating a virtual domain controller for DR exercise

  - by Dips

  Hello gurus, I have a question. I have a requirement where I have a virtual domain controller and I have to migrate it to another virtual server in a different location. It is for test purposes to test out a DR scenario and the test will be deemed successful if the users that authenticate using the production DC can do so in the backup DC. I don't know much about this and thus don't know why it was assigned to me. So any assistance will be greatly appreciated. What I had in mind was: 1) Taking a snapshot of the production server and then restoring it in the other server. But I was told that this is not the suggested way of doing it. I was not told why. Is that right?If a snapshot is to be taken then what is the best way to do it. Any ideas on where I can get the documentation for this? 2) Another way would be to build the test DC from ground up, match it to the specs of production DC and then perform the DR test. Is this a better option? What will be needed to perform such an activity? Where can I find documentation on that? I apologise for the length of this query. As I said I am quite a novice and hope to get a better resolution. Any assistance will be greatly appreciated. Regards,

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• Which httpd.conf and php.ini files does plesk use

  - by Saif Bechan

  If i disable the include_path in /etc/php.ini, i can still see that there is an include path loaded from somewhere. I want to know where this file is. If i use phpinfo(); on my domain i get that there is a include path /usr/share/pear:/usr/share/php, even though in the php.ini i used: ;inlucde_path=".:" In the section for aditional php.ini files this is the list: /etc/php.d/curl.ini, /etc/php.d/dbase.ini, /etc/php.d/dom.ini, /etc/php.d/gd.ini, /etc/php.d/imap.ini, /etc/php.d/json.ini, /etc/php.d/mbstring.ini, /etc/php.d/mysql.ini, /etc/php.d/mysqli.ini, /etc/php.d/pdo.ini, /etc/php.d/pdo_mysql.ini, /etc/php.d/pdo_sqlite.ini, /etc/php.d/wddx.ini, /etc/php.d/xmlreader.ini, /etc/php.d/xmlwriter.ini, /etc/php.d/xsl.ini, /etc/php.d/zip.ini I have checked all these files but i can nowhere find a reference to pear. This said the /etc/httpd/conf/httpd.conf file is questioning to me too. If i check this file i can see the following values are defined. DocumentRoot "/var/www/html" <Directory /> Order Deny,Allow Deny from all Options None AllowOverride None </Directory> <Directory "/var/www/html"> Options None AllowOverride None Order allow,deny Allow from all </Directory> The strange thing is that i don't even use this directory, so where does plesk get his httpd.conf file from. I want to check if everything is ok, because my vhost.conf is not working. I don't know if i should change these values or not, and where i can find the values plesk uses. i hope someone can help me with this.

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• Problem with PXE boot

  - by user70523

  Hi, I followed the following link for PXE boot, http://www.howtoforge.com/setting-up-a-pxe-install-server-on-ubuntu-9.10-p3 and I was able to ping the client from the server and also when I booted up the client It is getting the IP address from the server. But later,I got this error PXELinux 3.82 2009-06-09 . . . [other informations] !PXE Entry point found (we hope) at 9D3B:0109 via plan A UNDI code segment at 9D3B len 16C2 UNDI data segment at 933B len A000 Getting cached packet 01 02 03 . . . [other informations] TFTP prefix: Trying to load: pxelinux.cfg/ec5db4c0-74fe-d511-b9e7-3d9235afe5a1 Trying to load: pxelinux.cfg/01-00-17-31-b6-5e-a8 Trying to load: pxelinux.cfg/0A64491E Trying to load: pxelinux.cfg/0A64491 Trying to load: pxelinux.cfg/0A6449 Trying to load: pxelinux.cfg/0A644 Trying to load: pxelinux.cfg/0A64 Trying to load: pxelinux.cfg/0A6 Trying to load: pxelinux.cfg/0A Trying to load: pxelinux.cfg/0 Trying to load: pxelinux.cfg/default Unable to locate configuration file Boot failed: press a key to retry or wait for reset I have put all the files mentioned in the link in tftpboot. Can anyone explain what could be the problem. Thanks in advance

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• Same domain only : smtp; 5.1.0 - Unknown address error 530-'SMTP authentication is required

  - by user124672

  I have a very strange problem after moving my netwave.be domain from WebHost4Life to Arvixe. I configured several email adresses, like [email protected] and [email protected]. For POP3 I can use mail.netwave.be, a mailserver hosted by Arvixe. However, for SMTP I have to use relay.skynet.be. Skynet (Belgacom) is one of the biggest internet providers in Belgium and blocks smtp requests to external mailservers. So for years I've been using relay.skynet.be to send my messages using [email protected] as the sender. The worked perfectly. After moving my domain to Arvixe, this is no longer the case. I can send emails to people, no problem. I have received emails too, so I suspect that's ok too. But I can't send emails from one user of my domain to another user. For example, if I send a mail from [email protected] to [email protected], relay.skynet.be picks up the mail just fine. A few seconds later, I get a 'Delivery Status Notification (Failure)' mail that contains: Reporting-MTA: dns; mailrelay012.isp.belgacom.be Final-Recipient: rfc822;[email protected] Action: failed Status: 5.0.0 (permanent failure) Remote-MTA: dns; [69.72.141.4] Diagnostic-Code: smtp; 5.1.0 - Unknown address error 530-'SMTP authentication is required.' (delivery attempts: 0) Like I said, this only seems to be the case when both the sender and recipient are adresses of a domain hosted by Arvixe. I have serveral accounts not related to Arvixe at all. I can use relay.skynet.be to send mail to [email protected] using these accounts. Likewise, I can use relay.skynet.be to send mail from [email protected] to these accounts. but not from one Arvixe account to another. I hope I have clearly outlined the problem and someone will be able to help me.

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• nginx with stub_status.. need help with nginx.conf

  - by Amar

  Hello I am trying to setup nginx with stub status so I can monitor nginx requests etc.. with serverdensity.com. I needed to put something like this in nginx.conf server { listen 82.113.147.xxx; location /nginx_status { stub_status on; access_log off; allow 82.113.147.xxx; deny all; } } And with this monitoring acctualy works. However It seems I lost "include" part in my nginx.conf and now none of vhosts in sites-enabled work. Here is a bit more of my nginx.conf http { include /etc/nginx/mime.types; default_type application/octet-stream; server_tokens off; access_log /var/log/nginx/access.log; sendfile on; #tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; tcp_nodelay on; gzip on; gzip_comp_level 2; gzip_proxied any; gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript; include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; server { listen 82.113.147.226; location /nginx_status { stub_status on; access_log off; allow 82.113.147.226; deny all; } } } Hope someone can help me with this , as I belive its minor issue, its just that "I dont see it" ty

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• How does SELinux affect the /home directory?

  - by Matt Solnit

  Hi everyone. I'm migrating a CentOS 5.3 system from MySQL to PostgreSQL. The way our machine is set up is that the biggest disk partition is mounted to /home. This is out of my control and is managed by the hosting provider. Anyway, we obviously want the database files to be on /home for this reason. With MySQL, we did the following: Edited my.cnf and changed the datadir setting to /home/mysql Added a new "File type" policy record (I hope I'm using the right terminology) to set /home/mysql(/.*)? to mysqld_db_t Ran restorecon -R /home/mysql to assign the labels and everything was good. With PostgreSQL, however, I did the following: Edited /etc/init.d/postgresql and changed the PGDATA and PGLOG variables to /home/pgsql/data and /home/pgsql/pgstartup.log, respectively Added a new policy record to set /home/pgsql/pgstartup.log to postgresql_log_t Added a new policy record to set /home/pgsql/data(/.*)? to postgresql_db_t Ran restorecon -R /home/pgsql to assign the labels At this point, I still cannot start PostgreSQL. pgstartup.log says: # cat pgstartup.log postmaster cannot access the server configuration file "/home/pgsql/data/postgresql.conf": Permission denied The weird thing is that I don't see any messages related to this in /var/log/messages or /var/log/secure, but if I turn off SElinux, then everything works. I made sure all the permissions are correct (600 for files and 700 for directories), as well as the ownership (postgres:postgres). Can anyone tell me what I am doing wrong? I'm using the Yum repository from commandprompt.com, version 8.3.7. EDIT: The reason my question specifically mentions the /home directory is that if I go through all these steps for any other directory, e.g. /var/lib/pgsql2 or /usr/local/pgsql, then it works as expected.

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• Windows 2008 Server cannot access any network share

  - by Ramesh

  Hello friends I run a Windows 2008 server with SP2. This server acts as a desktop alone. Recently, I switched between two networks (corporate and other) using this system. Ever since, I am unable to access any network share on the original network from where I installed and configured the desktop. The message I get is "Network path was not found". Note that I am able to access the internet and my corporate mail server. I am told this is a Vista and Windows 2008 specific problem and I have done everything I could think of: a) Deleted the second network settings from the desktop b) Installed a patch from MS that supposed took care of this problem (with MS clearly saying they had not tested this enough) c) The SP2 install was after the problem occurred and I went ahead with it in the hope that SP2 may have something that would fix this Some additional details: a) A system admin can log into this system from a remote terminal b) I cannot get into my own system using the hidden share C$ - for instance \mymachine\C$ gives me the same message as above - Network path not found c) I can log into my system remotely using mstsc d) I cannot create shares on this system - as an extension network printers are not detected I have an update for you: The error message is as follows - **Network Error** Windows cannot access \\network_share Check the spelling of the name. Otherwise there might a problem with your network. To try to identify and resolve network problems, click Diagnose. Clicking Diagnose gives Error Code: 0x80070035 The network path was not found. Any help will be appreciated Thanks

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• nmap on my webserver shows TCP ports 554 and 7070 open

  - by atc

  I have a webserver that hosts various websites for me. The two services that are accessible outside are SSH and Apache2. These are running on a non-standard and standard port, respectively. All other ports are closed explicitly via arno-iptables-firewall. The host is running Debian Testing. I noticed that a scan of the host using nmap produced different results from different PCs. From my laptop on my home network (behind a BT Homehub), I get the following: Not shown: 996 filtered ports PORT STATE SERVICE 80/tcp open http 554/tcp open rtsp 7070/tcp open realserver 9000/tcp open cslistener whereas scanning from a US-based server with nmap 5.00 and a Linux box in Norway running nmap 5.21 I get the following: Not shown: 998 filtered ports PORT STATE SERVICE 80/tcp open http 9000/tcp open cslistener so I hope it's my internal network or ISP that's playing up, but I cannot be sure. Running a netstat -l | grep 7070 produces nothing. Similarly for port 554. Can anyone explain the peculiarities I'm seeing?

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• SAN Replication for Fault tolerance using EVA4400

  - by Sergei

  Hi Everyone, I hope that someone would point me in the correct direction - it looks like I have no enough konwledge in the subject and timeframes are too tight for me to explore different scenarios in depth.. We have two datacenters few miles away from each other connected by 100 Mbps link.Each datacenter will have 5 BL490 blades with ESX Standard hosting about 50 VMs. Eac hsite has HP eva4400 SAN with SAN replication set up.VC is going to be in the first datacenter and both datacenter are networked. SAN Replication is block level so it seems like I cannot just replicate changes but all writes would have to be replicated.This should not be a problem as link can sustain about 1.8 TB a dayand data can be buffered. I am having trouble however visioning how recovery would work in this case.We don't need instant recovery , I would say 4 hours recovery time is accepted so fancy automatic SRM like DR scenario would not be easily accepted due to the financial reasons, however any comments are welcomed. Current idea is following: replicate LUNs from primary site to the secondary.When disaster strikes, IT personnel switches on ESX hosts on the remote side and connects replicated LUNS to them, then registers VMs and changes IP address. I understand that this seems like horribly manual process and I almost sure I have missed some obvious pitfalls here. Could someone let me know what direction should I go?An articles regarding the subject? This is a brand new setup and we would rather build up basic recovery process and scale it later.I just need to have a right direction to allow for such scalability. Thank you very much in advance!

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• Crash dump analysis

  - by Ryan Ries

  I hope this isn't a stupid question, and if it is, then I want to at least get it over with so I don't feel so dumb in the future. Here we are, loading up a Windows crash dump with Windbg. Here are the first few lines of the debugger output: 0: kd> .dumpdebug ----- 64 bit Kernel Summary Dump Analysis DUMP_HEADER64: MajorVersion 0000000f MinorVersion 00001db1 ... The MinorVersion I mostly understand. It's hexadecimal and it translates to 7601 in decimal. Windows admins would already be able to tell from that that this must be either a Win7 x64 machine or a 2k8 R2 machine with SP1. But isn't 7601 the build number? It's supposed to be Major.Minor.Build/Revision... right? Also I don't understand the MajorVersion. It should be 6. This version of Windows is 6. But isn't 0000000f in hexadecimal 15 in decimal? The full version string of this version of Windows, when you launch the Command Prompt for instance, is 6.1.7601. If 7601 is the MinorVersion, then what is 1 and what is 6? And why does the crash dump say 0F?

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• How to replicate Lynda.com transitions in my own presentations (Keynote preferred, Powerpoint possib

  - by jdmuys

  I recently noticed that lynda.com uses in their training videos a very interesting transition that I would like to replicate in my own presentations. They are somewhat similar to the computer screen animations in the "Minority Report" movie: they zoom out to a huge sheet, pan, and zoom back in to a new location. It's very good for navigating deep hierarchies. For example when you are at level 1, you can see level 3, but it's tiny and unreadable. You then transition by zooming in to a deeper level that suddenly becomes legible. I can imagine also to use it using a large "mind map" as a common Ariane thread, to dive into details (and back out) while still taking advantage of the visual memory of the audience. It a bit difficult to describe, I hope I managed to convey the idea. You can see them in action for example there (iPhone programming training): http://www.lynda.com/home/DisplayCourse.aspx?lpk2=48369 Then click on "What you should know" in the introduction chapter. See for example in that movie between 22s and 24s, then between 27s and 28s. How do they do that? How could I replicate that effect? TIA

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• Windows Authentication behaves oddly when VPN'd

  - by Dan F

  Hi all We've got a few apps that rely on windows authentication - a couple of web apps with AD auth turned on and we usually connect to our SQL servers with windows auth. This normally runs without a hitch. It doesn't work so well if we're VPN'd to a client site though. SSMS Opening SSMS normally from the start menu, then picking a server that normally accepts windows auth, results in a message saying: Login failed. The login is from an untrusted domain and cannot be used with Windows authentication. (.Net SqlClient Data Provider) If I drop to a command prompt and use runas /user:domain\user to launch SSMS I can successfully windows auth to our SQL server instances with that ssms process. If I look in task manager, both copies of ssms.exe (start menu vs runas) have the same user, and I can see no discernible differences between the processes in procexp. AD Auth websites If I open IE and browse to any of our websites that require an authenticated windows user, I get the "who are you" prompt, and that dialog thinks I'm whoever the VPN user is. I can click "Use another account" and authenticate that way though. Outlook Even Outlook prompts for a username when we are VPN'd! It's affecting our Win7 and Vista machines. It's been a while since we had an XP box, but I don't recall having this issue on XP for what it's worth. The VPN connections are just using the built in windows VPN connections, they're not fancy cisco VPNs or anything of that nature. Does anyone know how to tell windows that I'd like to be my normal old primary domain user rather than the VPN user when authenticating to resources in our domain? Heck, I'd be happy with a solution that prompted me with the "who are you" if I was trying to access windows auth requiring resources on the client's VPN. Thanks! Apologies if this is more a superuser question, I wasn't sure which site it best suited. It's about networking and infrastructure and plagues all of our developers here, so I hope it's a serverfault Q.

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• DCOM configuration: accounts with same name but different passwords problem

  - by archimed7592

  Hello, everybody! I'm experiencing troubles with DCOM configuration. Here is the case: I'm using some product which supports client-server interaction through DCOM, but the client won't get any access to the server if the attempt is being done from an account with a name which exists at the server as well, but has different password. Basically, if we try to access the server from the Administrator account which obviously present on the server machine, we will fail if client's Administrator password doesn't match server's one. After actively collaborating with the product's developer in attempts to localize the issue, he come across with resolution "can't be fixed" or, if you prefer to call a pikestaff a pikestaff than it's more likely a "don't know how to fix" resolution :). I believe there is a solution for this problem and I'm asking you, IT professionals, to help me out with this one. I do realize that the problem may be caused by the way the developer interact with DCOM and if so it can't be fixed be means of pure system configuration and the question should be asked at SO, but since I've bumped into the same behavior while working with file/printer sharing - Windows tried to simplify everything and used currently impersonated credentials to access the share, I hope the solution lies at system configuration layer. P.S. I believe that the actual software product I'm talking about is entirely irrelevant however my experience tell me that there always would be somebody who will think that it on the contrary is very relevant. Here it is: SpRecord.

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