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• SQL 2000 and group names

  - by Nasa

  I have a SQL 2000 server which has databases, under user section of the database object, I have some NT 4.0 groups. These groups were migrated over to Active Directory some time ago using ADMT with SID history. The original source domain groups have since been deleted. The access shown is olddomain\groupname. I don't know why, if they were ntfs permissions they would update automatically to target\groupname. The users in the AD domain still have access to the database as they are a member of the migrated group (Target\groupname). I was wondering 1) Why does the old group (source\groupname) show up as it doesn't exist anymore. But access is still granted to the target group? 2) Is there any easy way to update the group name from source\groupname to target\groupname? Thanks for any help.

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• Why does DataContractJsonSerializer not include generic like JavaScriptSerializer?

  - by Patrick Magee

  So the JavaScriptSerializer was deprecated in favor of the DataContractJsonSerializer. var client = new WebClient(); var json = await client.DownloadStringTaskAsync(url); // http://example.com/api/people/1 // Deprecated, but clean looking and generally fits in nicely with // other code in my app domain that makes use of generics var serializer = new JavaScriptSerializer(); Person p = serializer.Deserialize<Person>(json); // Now have to make use of ugly typeof to get the Type when I // already know the Type at compile type. Why no Generic type T? var serializer = new DataContractJsonSerializer(typeof(Person)); Person p = serializer.ReadObject(json) as Person; The JavaScriptSerializer is nice and allows you to deserialize using a type of T generic in the function name. Understandably, it's been deprecated for good reason, with the DataContractJsonSerializer, you can decorate your Type to be deserialized with various things so it isn't so brittle like the JavaScriptSerializer, for example [DataMember(name = "personName")] public string Name { get; set; } Is there a particular reason why they decided to only allow users to pass in the Type? Type type = typeof(Person); var serializer = new DataContractJsonSerializer(type); Person p = serializer.ReadObject(json) as Person; Why not this? var serializer = new DataContractJsonSerializer(); Person p = serializer.ReadObject<Person>(json); They can still use reflection with the DataContract decorated attributes based on the T that I've specified on the .ReadObject<T>(json)

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• Automatically encrypting incoming email

  - by user16067

  I have a small website and would like to encrypt incoming email using gpg. Is there a way to force sendmail to check email and encrypt it if its not already encrypted? I'm using GPG on a linux server. Thanks [added]Someone asked what I hope to accomplish. My intent is for the users of the email to become more familiar with seeing thier own email encrypted and losing that fear of the unknown. The side benefit is that the email can't be looked at later down the road. If the email isn't encrypted on its way in, I'm unable to do anything about it. I'm assuming most email would be nosed around with once its already on my hard drive, so GPG would protect against those issues.

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• How can I get vim to set an ACL on its swap files?

  - by thsutton

  I use vim on an OS X Snow Leopard Server machine. A number of the directories I work in have ACLs (so that various groups of users can access them over AFP) that are inherited. For some reason, when I'm working in one of these directories, vim cannot read it's own swap files. It can create them fine but can't read them which, for some reason, makes it display the "swap file already exists" message (and no, the swap file does not already exist). vim -r lists the newly created swap file as "[cannot be read]". The owner and group are correct and the permissions are 0600, and the ACLs on the swap file and the file I'm editing are identical (as disclosed by ls -le and compared with diff). groups returns the same thing whether invoked from my login shell or via :! in vim. Has anyone encountered (and hopefully resolved) a problem like this before?

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• SqlServer2005 Enterprise Fast Recovery, SqlAgent Availability, and Replication

  - by automatic

  I have a database under SqlServer2005 Enterprise 64bit sp3, that is in phase 3 of 3 of recovery after a reboot without normal shutdown. It looks like with fast Recovery, the database became available when recovery moved into phase 3. However, it seems (based on message in SqlAgent log), that SqlAgent is "started" but not available to run jobs until recovery completes. I have other databases on the same server that are transactional publications. It seems to me that if I let users update the published databases, transactions will start to build up in the log, but won't be moved to the distribution database or onto the subscribers because SqlAgent isn't running jobs. Should I be overly concerned about performing updates before

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• creating a journal/blog

  - by DijnsK

  hi, im trying to replace our current journal (excel sheet) with a web portal based journal. something kind of like twitter, but with more options. also needs to have a login so we can track the people entering. it can also be some sort of tool but i cant find anything that meets our demands... i could use a ITIL ticket service but that has way to much functionalities for our use. im basicly looking for a webportal with a shared blog, where users can login and creat new entries with: a topic name a automated follow-up ID number a field where they can enter specific info a reply field and a status field with pre defined statuses can anyone help me with this? thanks in advance. Koen

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• postfix-dovecot email sending works with squirrel mail but not with Thunderbird?

  - by Mark S.

  I have setup an intranet email system using postfix, dovecot and squirrel mail, Which is working fine, I can send and receive mail to all users on the system. I presume that the issue is in the postfix configuration, because when I configure Thunderbird to send mail I am getting the following error: An error occurred while sending mail. The mail server responded: 4.1.8 <[email protected]>: Sender address rejected: Domain not found. Please check the message recipient [email protected] and try again. Also here is the relevant syslog entries: NOQUEUE: reject: RCPT from host1.intranetdomain.com [More Information] [192.168.11.1 [More Information] ]: 450 4.1.8 <[email protected]>: Sender address rejected: Domain not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[127.0.0.1 [More Information] ]> I have configured MX records on the DNS server and they respond appropriately when I query them for those MX records, so I do not think that is the issue. I think that my issue is caused by the default configuration of: smtpd_recipient_restrictions = reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_sender_restrictions = reject_unknown_sender_domain Since this is on an internal network and it will not be exposed to the internet as a whole which options can I remove safely?

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• PostgresQL on Amazon EBS volume, realistic performance, or move to something more lightweight?

  - by Peck

  Hi, I'm working on a little research project, currently running as an instance on ec2, and I'm hoping to figure out whether I'm going down the right path. We, like a thousand other people, are making use of some of twitters streaming feeds to do gather some data to have fun with and my db seems to be having problems keeping up, and queries take what seems to be a very long time. I'm not a DBA by trade, so I'll just dump some info here and add more if need be. System specs: ec2 xl, 15 gigs of ram ebs: 4 100 gb drives, raid 0. The stream we're getting we're looking at around 10k inserts per minute. 3 main tables, with the users we're tracking somewhere in the neighborhood of 26M rows currently. Is this amount of inserts on this hardware too much to ask out of ebs? Should take a look at some things with less overhead like mongodb?

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• DC on Hyper V Host

  - by Saif Khan

  I've read a few similar questions but wasn't clear. I have a small office (13) users and recently purchased a new single server (this is all I have to work with for now). Server specs Memory - 16GB Drives - 6 SCSI (2TB) PROCESSOR - DUAL QUAD I plan on making the Hyper-V host the DC and then 2 VMs, one for a file server and the other an application server. Question - since I am restricted to this single server, would it be a big issue making the Hyper-V host the domain controller? Your input greatly appreciated.

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• How to update Sharepoint 2010 user profile for user whose account name has changed in AD?

  - by Daniel Root

  We have an issue with User Profile Sync in SharePoint 2010 when the following happens: A new user is added to AD (ie DOMAIN\jdoh) The user is synched successfully to SharePoint Time passes The user's account name is changed in AD (ie because it was originally misspelled: DOMAIN\jdoe) The user is re-synced to SharePoint The behavior appears to be that the account name is not changed. In the above example, accountname will continue to be DOMAIN\jdoh in SharePoint, though other properties are synced correctly- I would assume by SID. This means that the users' my profile and mysite links still refer to the 'old' name (ie Person.aspx?accountname=Domain\jdoh). What steps should be taken to fix this in SharePoint when an account name is changed in AD?

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• Temp files created in every folder in Windows Server 2003

  - by i.h4d35

  So we have some folders which are shared over the AD Domain (Windows Server 2003). It was just noticed that in 2 of those folders (which contain only Excel and Word files), whenever a file is opened and closed, the temp file which was opened corresponding to that file still remains. Apparently, this's been going on for the past couple of years (which has led to an insane amount of temp files in each folder/subfolder under those shared folders). These shared folders are under the D:drive and not C: drive. There is only one group (containing 2 users) who access the said folders. I cannot understand if this has to do with the settings/permissions for the User/Group/Individual Client machine. For now, I have manually deleted all the temp files from each folder/subfolder. While this is not critical at the moment, I'd still like to clear this up. Also, it takes an additional fraction of a second to open folders that contains more than 10,000 temp files. Thanks in advance.

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• redirect all youtube video requests to a specific one

  - by iTayb

  I'm on an IT team in my company and I would like to block youtube to users. I don't want to just deny access to the whole youtube domain, but only to replace the .flv/.mp4 request with the one that I want. That way, if someone tries to watch youtube videos on the network, He'll get a video of why using our expensive bandwidth for pleasure is a no-no. I thought about using a packet manipulation program and just replace the video ID with something that I want, but I didn't manage to do it right.

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• "Half" ssh authorization to a server with git repository

  - by hsz

  Hello ! Currently I have purchased web hosting with ssh access. I have created a git repository on it and if I set my public key in ~/.ssh/authorized_keys file, I have access to that repo, I can push/pull data, etc. This solution allows access for every user that has his public key in authorized_keys file. But there is one thing that I want to avoid. Every user can login to the server too and has access to whole ssh account. Is it possible to create a blacklist of users' keys that will not have an access to ssh ? I see it that way: user logs in to a git - ok, allow for every one user logs in to ssh account ~/.profile file is hooked and called a custom script: check user's public key if public key is in ~/.ssh/blacklist_keys call bash exit/logout Is it possible in any way ?

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• need help upgrading small business wifi network

  - by Henry Jackson

  Our small business currently has 3 wireless access points around the building, each with their own SSID. Security is done with WEP (ick) and MAC address filtering (double ick). We are trying to reconfigure the setup, with these goals: wifi roaming between the access points user-based authentication that isn't as annoying as MAC address filtering. 1) The entire building is hardwired with ethernet, so I assume it should be easy to set up the routers to act as one big network, but I can't figure out how. Can someone point me in the right direction? The routers are consumer-grade linksys routers, is it possible to do this without getting new hardware? 2) For security, we will probably upgrade to WPA2, and I'm thinking of using the Enterprise version so that users can log in with a username, instead of having a single key (so if an employee leaves or something, their access can be removed). We have several on-site Windows servers, can one of them be set up as a RADIUS server, or is that best left to a dedicated machine (again, using existing hardware is good).

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• C++ Iterator lifetime and detecting invalidation

  - by DK.

  Based on what's considered idiomatic in C++11: should an iterator into a custom container survive the container itself being destroyed? should it be possible to detect when an iterator becomes invalidated? are the above conditional on "debug builds" in practice? Details: I've recently been brushing up on my C++ and learning my way around C++11. As part of that, I've been writing an idiomatic wrapper around the uriparser library. Part of this is wrapping the linked list representation of parsed path components. I'm looking for advice on what's idiomatic for containers. One thing that worries me, coming most recently from garbage-collected languages, is ensuring that random objects don't just go disappearing on users if they make a mistake regarding lifetimes. To account for this, both the PathList container and its iterators keep a shared_ptr to the actual internal state object. This ensures that as long as anything pointing into that data exists, so does the data. However, looking at the STL (and lots of searching), it doesn't look like C++ containers guarantee this. I have this horrible suspicion that the expectation is to just let containers be destroyed, invalidating any iterators along with it. std::vector certainly seems to let iterators get invalidated and still (incorrectly) function. What I want to know is: what is expected from "good"/idiomatic C++11 code? Given the shiny new smart pointers, it seems kind of strange that STL allows you to easily blow your legs off by accidentally leaking an iterator. Is using shared_ptr to the backing data an unnecessary inefficiency, a good idea for debugging or something expected that STL just doesn't do? (I'm hoping that grounding this to "idiomatic C++11" avoids charges of subjectivity...)

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• Real life example of an agile game development process outputs

  - by Ken

  I'm trying to learn about applying agile methodologies to game development. But seems to be impossible to find real life examples. There seems to be plenty of material discussing how 'in principle' agile is applied to a game. But that is NOT what I am looking for. I have the Keith book. What I AMlooking for are real EXAMPLES of things like; Initial user stories Final user stories (complete, covering the entire game requirements) Acceptance criteria Task list Sprint backlogs (before and after each sprint) The agile books seem to have some limited examples, many of which seem contrived or limited. In this era of open source software, there must be a publicly available documented example of the process applied to a real game. I am asking specifically about games because they are so different from normal applications. Regular applications are built to all users to complete specific tasks in order to get stuff done(book a room, print a report etc). People play games for much less tangible reasons, so I think the process is significantly different. [it doesn't have to be scrum, it could be any process, just needs to be a real life example game and be reasonably complete]

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• LAMP Server: (104) Connection reset by peer

  - by StephenM

  A user reported the following problem when attempting to visit www.airlinemogul.com. The requested URL could not be retrieved While trying to retrieve the URL: http://www.airlinemogul.com/airlinemogul/index.php The following error was encountered: * Read Error The system returned: (104) Connection reset by peer An error condition occurred while reading data from the network. Please retry your request. There are no other issues reported by any other users, so it may be an isolated issue. Could anyone give me any suggestions as to how I could investigate the problem further or find a solution? Thanks.

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• Exchange Cached Mode (Exchange 2010) with Outlook 2003 and Outlook 2010 Causing Sync Issues

  - by Jason N. Gaylord

  We have Exchange 2010 and a mix of Outlook 2003 and Outlook 2010 clients. When Exchange Cached Mode is enabled, clients are receiving sync issues. In Outlook 2010, the sync issues are mainly with the Deleted Items. In Outlook 2003, they are mainly around the Offline Address Book. When Exchange Cached Mode is disabled, the clients notice a 3 second delay in deleting email in list view within the Inbox. Anyway that these two issues can be resolved? It's a big pain especially to the frustrated end users. TIA!!!!

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• need help upgrading small business wifi network

  - by Henry Jackson

  Our small business currently has 3 wireless access points around the building, each with their own SSID. Security is done with WEP (ick) and MAC address filtering (double ick). We are trying to reconfigure the setup, with these goals: wifi roaming between the access points user-based authentication that isn't as annoying as MAC address filtering. 1) The entire building is hardwired with ethernet, so I assume it should be easy to set up the routers to act as one big network, but I can't figure out how. Can someone point me in the right direction? The routers are consumer-grade linksys routers, is it possible to do this without getting new hardware? 2) For security, we will probably upgrade to WPA2, and I'm thinking of using the Enterprise version so that users can log in with a username, instead of having a single key (so if an employee leaves or something, their access can be removed). We have several on-site Windows servers, can one of them be set up as a RADIUS server, or is that best left to a dedicated machine (again, using existing hardware is good).

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• need help upgrading small business wifi network

  - by Henry Jackson

  Our small business currently has 3 wireless access points around the building, each with their own SSID. Security is done with WEP (ick) and MAC address filtering (double ick). We are trying to reconfigure the setup, with these goals: wifi roaming between the access points user-based authentication that isn't as annoying as MAC address filtering. 1) The entire building is hardwired with ethernet, so I assume it should be easy to set up the routers to act as one big network, but I can't figure out how. Can someone point me in the right direction? The routers are consumer-grade linksys routers, is it possible to do this without getting new hardware? 2) For security, we will probably upgrade to WPA2, and I'm thinking of using the Enterprise version so that users can log in with a username, instead of having a single key (so if an employee leaves or something, their access can be removed). We have several on-site Windows servers, can one of them be set up as a RADIUS server, or is that best left to a dedicated machine (again, using existing hardware is good).

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• Infrastructure to effectively set up experiements and learn from them

  - by David

  Open-org.com is in the early stages of creating our first product, a place on the web, where one can ask lawyers questions at a fraction of their normal costs. An early stage front page can be found here. I got inspired by this video, which is recommended by Jeff Atwood, which talks about getting feedback faster, which is the reason for this question. The problem Needless to say, we want our conversion rates to be as high as possible. Therefore, we want to be able to rapidly set up a new experiment where we change something on the site (like moving an image slightly, rewriting a sentence etc.). We then want to present the modified page to a random subset of the users. After that we will compare the conversion rates of the experiment with another version. I could very well imagine that we want to run 10-100 experiments simultaneously and it would be nice to have features, where experiments that obviously have worse results will be ended before schedule. My question Does infrastructure to support the whole process exist? A short description of our infrastructure... We use EC2 and PHP and have a script to automatically start up new instances with all needed software. Still, starting up a new server for every experiment, seems like a bit of overkill, so I am wondering what other options exist. Btw. If you feel like working for Open-org.com, you can pick a task, and start working, or suggest a new task. All profits are given out to the contributors.

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• Why are network printers not available in the Add Printer Wizard...when run over a network?

  - by Kev

  From a Windows 2003 server machine I browsed the network to an XP client (\computername in Explorer) then double-clicked Printers and Faxes and then Add Printer. In the wizard, normally the second screen asks if you want to install a local printer or a network printer. Well, in this case, it seems to assume I want a local printer, because the second screen is what would normally be the third screen if you chose local printer and clicked Next. I want to install a network printer on a remote machine for its local users. Is this not possible? If not, why not?

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• Group policy preventing XenApp from creating start menu menus

  - by JohnyV

  I have a citrix Xenapp server that has some apps installed. The are placed in a folder and set to populate the start menu. The problem is when I log on with a user from a particular OU I am unable to get the start menu inserted from xenapp. It is quite a restrictive group policy but does anyone know the setting for preventing users from modifying the start menu. I have tried "Prevent changes to Taskbar and Start Menu Settings" but this didnt work. Any ideas would be great. I know it isnt permissions because I have another user that has the same permissions assigned to them, the only difference is that one user gets the restrictive group policy and the other doesnt. Thanks

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• The Iron Bird Approach

  - by David Paquette

  It turns out that designing software is not so different than designing commercial aircraft.  I just finished watching a video that talked about the approach that Bombardier is taking in designing the new C Series aircraft.  I was struck by the similarities to agile approaches to software design.  In the video, Bombardier describes how they are using an Iron Bird to work through a number of design questions in advance of ever having a version of the aircraft that can ever be flown.  The Iron Bird is a life size replica of the plane.  Based on the name, I would assume the plane is built in a very heavy material that could never fly.  Using this replica, Bombardier is able to valid certain assumptions such as the length of each wire in the electric system.  They are also able to confirm that some parts are working properly (like the rudders).  They even go as far as to have a complete replica of the cockpit.  This allows Bombardier to put pilots in the cockpit to run through simulated take-off and landing sequences. The basic tenant of the approach seems to be Validate your design early with working prototypes Get feedback from users early, well in advance of finishing the end product   In software development, we tend to think of ourselves as special.  I often tell people that it is difficult to draw comparisons to building items in the physical world (“Building software is nothing like building a sky scraper”).  After watching this video, I am wondering if designing/building software is actually a lot like designing/building commercial aircraft.   Watch the video here (http://www.theglobeandmail.com/report-on-business/video/video-selling-the-c-series/article4400616/)

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• More Tables or More Databases?

  - by BuckWoody

  I got an e-mail from someone that has an interesting situation. He has 15,000 customers, and he asks if he should have a database for their data per customer. Without a LOT more data it’s impossible to say, of course, but there are some general concepts to keep in mind. Whenever you’re segmenting data, it’s all about boundary choices. You have not only boundaries around how big the data will get, but things like how many objects (tables, stored procedures and so on) that will be involved, if there are any cross-sections of data (do they share location or product information) and – very important – what are the security requirements? From the answer to these types of questions, you now have the choice of making multiple tables in a single database, or using multiple databases. A database carries some overhead – it needs a certain amount of memory for locking and so on. But it has a very clean boundary – everything from objects to security can be kept apart. Having multiple users in the same database is possible as well, using things like a Schema. But keeping 15,000 schemas can be challenging as well. My recommendation in complex situations like this is similar to a post on decisions that I did earlier – I lay out the choices on a spreadsheet in rows, and then my requirements at the top in the columns. I  give each choice a number based on how well it meets each requirement. At the end, the highest number wins. And many times it’s a mix – perhaps this person could segment customers into larger regions or districts or products, in a database. Within that database might be multiple schemas for the customers. Of course, he needs to query across all customers, that becomes another requirement. Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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