Basic Security Question For Remote App
May 1, 2007
I'm designing a C# winforms app that will be used by 500 customers/companies. The customers will use the app to edit data for their company on the remote SQL Server. What's the best way to manage security in terms of logins/passwords? Should each user have a different login? (probably not) Or should the application have it's own login/password that is encrypted and the user never knows what the login/password is?
Also, is it necessary to use Web Services for this application? Any other thoughts/comments are very welcome.
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Sep 10, 1999
I'm new to SQL 7.0 and have a basic security question. I want to set up security so that different roles can see different portions of the same tables. In other words, Department A see's its projects from table 1 and Department B users see only their projects from table 1. The results are then linked to the client front end, so that the basic form they input/read off will give them the results from table 1 with only their projects. Is there a simple way to do this with a stored procedure or view, so that the result set can be linked to the form and only differs depending on the role? Thanks for the help.
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Sep 30, 2007
Hi,
I'm trying to learn the "correct" way to use security with SQL Server 2005 and .NET 2.0. Let me explain what I've always done in terms of security and why.
Historically, I've created a Users table and a UserPermissions table in my database. The Users table has the username and password, and the UserPermissions table relates to the Users table and has a list of all (application-defined) permissions granted to the user. For example, say the application has features A, B, and C. The administrator might grant features A and C to user John Doe.
The reason I put this table into my database is two-fold. First, it allows me to easily setup a list of features that the application can secure. Second, it allows the application to log into SQL Server using a constant username a password. The application always gets access to the database, but then if the user didn't provide a good username and password, the application logs back out of the database and quits.
The downside to this is that SQL Server doesn't know who's accessing it. So if I wanted to have a trigger that gets the current user, all users appear to be the same person. The upside is that the administrator doesn't need to go into SQL Server and set up new users, and the users aren't aware of the actual username and password used to access the database, so they can't get to it directly.
I'd really like to learn to set up security the right way. What I want is:
A) Each user to be uniquely identified within SQL Server - i.e., each one logs in with his own user id
B) The application has complete control over the database (I want the application to be able to read all tables, for example)
C) The user doesn't have direct access to the database. I don't want the user to be able to load SQL Server Management Studio on his computer and go directly into the database
D) There is some way to grant application-specific features to each user
I would think this has to be a common scenario. Can anyone offer some good tips on how to accomplish what I'm trying to do? Thanks in advance...
-Eric
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Sep 5, 2006
Hi,
I am new to SQL 2005, can someone give me some details instructions about how to do below two tasks:
All my developers are in a window domain user group, I need to grant dbo privileges to that domain group so then can do the their development work. The rule is all objects they create need to be owned by dbo not by there ID. ( I can€™t do it because I got €œ The €œDeafult_Schema clause cannot be used with a windows group€?)
Same as above but this time they only need select permission on tables nothing else.
Many thanks.
PC
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Apr 4, 2008
I'm having 2 Dummy Users.
The one i created i direct login on the server and access to 2 databases.
The second one i've placed in a AD users group.
That group has a login and is also mapped to the 2 databases.
Sql server is running with on a AD-users, not localsystem.
Why can DummyOne work fine, and DummyTwo (the grouped one) can login but access none of the databases.
What have I missed ?
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Jan 16, 2008
Ok, I know it's a really basic question but I'm hoping someone will humor me. Not being a database expert I am wondering what the basic security differences are between a SQL server db and an Access db. What makes SQL a more secure choice for confidential information over Access.
I know from a useability SQL is the better choice being a multiuser access platform but I am not familar with security mechanisms employed.
I appreciate any info on this.
Thank you.
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Dec 19, 2007
does anybody know why MS doesnt consider Basic Authentication a viable solution for Inter/Xtra net access to RS? I'm re reading the documentation at http://msdn2.microsoft.com/en-us/library/bb283249.aspx but so far am not getting what the Security Extension options accomplish that can't be accomplished with much less effort using some form of Basic Authentication.
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Oct 21, 2007
We have a Foxpro database on our local machine and a shared sql server database on our remote machine. We have created a remove view that updates or inserts data into the sql server db using the local foxpro data.
What is the recommended way to secure these updates or inserts? We're worried that since our data is not encrypted, it is a security risk.
Thanks in advance.
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May 4, 2007
I'm creating an app that will connect to a central sql server 2005 (hosted on a Win2003 server with Windows Firewall on). I added sqlservr.exe and sqlbrowser.exe to the firewall exceptions to allow for remote connections. Now, an admin I know is telling me that this is not secure and we must configure those 2 exe's to only be accessed by certain IP addresses. I want to make sure the database is very secure, but this sounds like overkill. ??
Questions:
Is this necessary (to limit access to these 2 exe's to certain IP addresses)?
How would I be able to distribute my application to different users if this is so?
How can I make sure that the SQL Server won't get "attacked" or "hacked"?
Mel
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May 4, 2006
Is anyone familiar with how to enable remote access to SQL Server 2000? ...and what are you security issues surrounding this?
Any help appreciated.
Adamus
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Aug 30, 2006
Hi,I'm
building an asp.net website using web developer express and I have a
SQL 2005 express install on the same machine. Using windows security,
everything works fine for development.Now I need to get it working at the client site, where the web server and SQL 2005 Express are on different machines.I'd
tried using windows authentication but that didn't work, probably
wasn't doing it correctly. I'd like to try SQL Authentication, at least temporarily, since I
can replicate that on my laptop at home easily I think.I created a new SQL login but was really baffled by the screens showing roles and schemas, etc. There's so many roles to choose from and wasn't sure if this new login needed to own any schemas. I
did turn on remote connections and mixed-mode authentication, the
probably now is my asp.net membership provider login page isn't
authenticating correctly, maybe my permissions are wrong on the
aspnet_..... tables for users, roles, profiles, etc. Any advice?thanks,Bruce
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Jun 27, 2007
I am unable to run a stored procedure that accesses a linked Oracle database as a dataset for a deployed report in Reporting Services. I receive the following error:
An error has occurred during report processing.
Query execution failed for data set 'spName'.
Access to the remote server is denied because the current security context is not trusted.
A few facts ...
The report previews fine in Microsoft Visual Studio 2005 Version 8.0.50727.762 (SP.050727-7600) report designer with VS being installed on my local machine and a shared data source referencing Server1
The deployed report on Server2 produces the error
The stored procedure code is similar to the following:
SELECT x.FieldName as OracleField
,y.FieldName as SSfield
FROM OracleLinkedServer..DatabaseName.TableName x
LEFT JOIN Server1.dbo.TableName y
The deployed report runs fine when the stored procedure code is changed as follows. This indicates to me that the problem is truly an Oracle connection issue;
SELECT 'ABC' as OracleField
,y.FieldName as SSfield
FROM Server1.dbo.TableName y
The Oracle database is a linked database on both SQL Server1 and on SQL Server2 database engines. (I don't see where in Server2 Reporting Services I can specify additional server connections.)
I've tried to trick Mr. Reporting Services on Server2 by creating a @L_TempTable in my stored procedure, inserting the data into it, then selecting from a SQL Server1.dbo.TableName LEFT JOIN @l_TempTable, but Server2 still knows I'm trying to get out to Oracle and rewards me with the error.
I can effectively run the Server1 stored procedure script on Server2 through MSSMS -- it's just the deployed report that references the stored procedure that doesn't work
The data source properties of the deployed report are as follows:
Select -- A Custom Datasource
Connection Type: Microsoft SQL Server
Connectoin String: Data Source=Server1;Initial Catalog=DatabaseName
Select -- Credentials stored securly in the report server
Username: UserName
Password: Password
Check -- Use as Windows credentials when connecting the the data source
Check -- Impersonate the authenticated user ...
(Please do not get sidetracked on the 'A Customer Datasource' selection above. I'd rather be using a shared data source, but right now, this is just the way it is.)
Anyone's expertise would be greatly appreciated. We have a great data warehouse but sometimes you just have to go back to the Oracle ERP and slug it out. What do I need to do to get a deployed report to effectively read from a stored procedure that references an Oracle table?
To everyone, thanks for reading!
~ Delora
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Aug 25, 2006
Hello,
In SQL 2005, from a stored procedure in a local database I am attempting to execute a remote stored procedure in another database on another server. I am getting the error referred to in the Subject when the local stored procedure tries to execute the remote stored procedure. A couple of comments:
The remote database is set up as a linked server in the local database. As part of the linked server definition I selected the 'be made using this security context', and provided a local user name and password.
The remote database is set to Trustworthy.
I have tried every combination of WITH Execute As on the remote stored procedure but nothing works.
I can query against the remote database successfully within Management Studio. I can even execute the remote stored procedure successfully from within M.S., but not from within my local stored procedure when it is run.
Thank you for your help on this - Amos.
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Jun 27, 2007
I am unable to run a stored procedure that accesses a linked Oracle database as a dataset for a deployed report in Reporting Services. I receive the following error:
An error has occurred during report processing.
Query execution failed for data set 'spName'.
Access to the remote server is denied because the current security context is not trusted.
A few facts ...
The report previews fine in Microsoft Visual Studio 2005 Version 8.0.50727.762 (SP.050727-7600) report designer with VS being installed on my local machine and a shared data source referencing Server1
The deployed report on Server2 produces the error
The stored procedure code is similar to the following:
SELECT x.FieldName as OracleField
,y.FieldName as SSfield
FROM OracleLinkedServer..DatabaseName.TableName x
LEFT JOIN Server1.dbo.TableName y
The deployed report runs fine when the stored procedure code is changed as follows. This indicates to me that the problem is truly an Oracle connection issue;
SELECT 'ABC' as OracleField
,y.FieldName as SSfield
FROM Server1.dbo.TableName y
The Oracle database is a linked database on both SQL Server1 and on SQL Server2 database engines. (I don't see where in Server2 Reporting Services I can specify additional server connections.)
I've tried to trick Mr. Reporting Services on Server2 by creating a @L_TempTable in my stored procedure, inserting the data into it, then selecting from a SQL Server1.dbo.TableName LEFT JOIN @l_TempTable, but Server2 still knows I'm trying to get out to Oracle and rewards me with the error.
I can effectively run the Server1 stored procedure script on Server2 through MSSMS -- it's just the deployed report that references the stored procedure that doesn't work
The data source properties of the deployed report are as follows:
Select -- A Custom Datasource
Connection Type: Microsoft SQL Server
Connectoin String: Data Source=Server1;Initial Catalog=DatabaseName
Select -- Credentials stored securly in the report server
Username: UserName
Password: Password
Check -- Use as Windows credentials when connecting the the data source
Check -- Impersonate the authenticated user ...
(Please do not get sidetracked on the 'A Customer Datasource' selection above. I'd rather be using a shared data source, but right now, this is just the way it is.)
Anyone's expertise would be greatly appreciated. We have a great data warehouse but sometimes you just have to go back to the Oracle ERP and slug it out. What do I need to do to get a deployed report to effectively read from a stored procedure that references an Oracle table?
To everyone, thanks for reading!
~ Delora
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Feb 10, 2014
We've got 3 SQL Servers all SQL Server 2012. We have a Master server and 2 production servers (let's call them A and B). The Master has linked servers defined for both A and B in an identical way.
A and B both have the same databases and each has a Stored Proc that gets called by the Master server.
An SQL Agent job executes the stored proc on both A and B.
It works fine against A but not B.
If we execute the stored proc in a query window under our windows account (domainowner) it works, if we use SetUser to pretend to be the SQL Server Agent account (let's call it domainagent) A works and B doesn't.
Executing against B returns the error "Access to the remote server is denied because the current security context is not trusted."
domainagent is a sysadmin on both Server A and B.
Trustworthy is set to ON in both the Master Server Database it's executing from and the remote databases on both A and B.
All 3 databases have the same owner (let's call it domainowner).
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Aug 25, 2006
Remus (or anyone who can help) -
I am sorry for posting this question here. The only reason I am doing so is because Remus answered a question similar to this late last year, but I couldn't get access to the whole thread.
In SQL 2005, from a stored procedure in a local database I am attempting to execute a remote stored procedure in another database on another server. I am getting the error referred to in the Subject when the local stored procedure tries to execute the remote stored procedure. A couple of comments:
a.. The remote database is set up as a linked server in the local database. As part of the linked server definition I selected the 'be made using this security context', and provided a local user name and password.
b.. The remote database is set to Trustworthy.
c.. I have tried every combination of WITH Execute As on the remote stored procedure but nothing works.
d.. I can query against the remote database successfully within Management Studio. I can even execute the remote stored procedure successfully from within M.S., but not from within my local stored procedure when it is run.
Thank you for your help on this - Amos.
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Sep 12, 2007
Hi,
I have a stored procedure servicing a queue (sql 2005).
The stored procedure updates some data in a different server and database.
If the queue contains messages and I execute manually the stored procedure, I don't have any problem at all.
However, if I set the queue to use the same stored procedure, it gives me the following error:
Error 15274: Access to the remote server is denied because the current security context is not trusted.
Any ideas?
Thanks,
Aron
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Sep 13, 2006
HiIm trying to connect Visual Basic Express 2005 to a remote SQL Server Express 2005. I cant find how i can do that in VB.net Express.In Web developer there are no problem to connect to a remote SQL server but i cant find it in VB.net Express. The XP with the SQL server that i want to connect to is on the local network. Greatful for help!
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Mar 12, 2007
Hi,
I want to make a component library in Visual Basic.NET and connect to a remote Sql Server. When I create a new DataSet with the wizard, I can only connect to a .mdf file, but not to a Sql Server. With Visual Web Developer I can connect to a Sql server. What is the difference between these enviroments ? How can I do the same with Visual Basic.NET ?
Thanks in advance.
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Dec 4, 2014
I use from sql server 2008. and c#
what is the best connectionstring?
I don't know if i use Persist Security Info and Integrated Security or not?
And if yes then their value must be true or false?
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Oct 14, 2005
Hello there I have trying to figure out for days how to enable FullTrust for my Reporting Services security extension.
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Jul 31, 2007
Hi,
I have posted this issue for a week, haven't got any reply yet, I posted it again and desperately need your help.
The article http://msdn2.microsoft.com/en-us/library/ms365343.aspx says:
Model Item Security can be set for differnt security filters, but when I use SQL Server Management Studio to set Model Item Security, it seems "Permissions" property surpass "Model Item Security" property. -- My report server is using Custom Authentication.
For example, in "Permissions" property of the model, if I checked "Use these roles for each group or user account" without setting any user or group, no matter what users I added to "Model Item Security" with "Secure individual model items independently for this model" checked, NO one user can see the model on report manager and report builder;
in above situation, if I added "user1" and gave role such as "Browser" role to "user1" in "Permissions" property, if I checked "Secure individual model items independently for this model" in "Model Item Security" property, even I did NOT grant "user1" to root model and any entities under the model, the "user1" is able to access the model and all entities in report builder.
My question is on the same report model, how to set "AdminFilter" (empty security filter) for administrator permissions and set "GeneralFilter" (filtered on UserID) for general user based on their UserID?
The article also says:
"Security filters are always applied, even for users who have Content Manager or Administrator permissions to the model. To allow administrators or other users to see all rows of an entity on which row-level security is defined, you can create an empty security filter (which always returns True) and then use the filter to grant those users access to all the rows."
So I defined 2 filters "GeneralFilter" and "AdminFilter" for "Staff" entity for my report model "SSRSModel", I expect after I deployed the report model, the administrator users use report builder to build reports with all rows available, and the non-admin users can only see rows based on their UserID.
I can only get one result at a time but not both:
either the rows are filtered or not filtered at all, no matter how I set the "SecurityFilter" for the entity: I tried setting both "AdminFilter" and "GeneralFilter" for SecurityFilter at the same time, combination of "DefaultSecurityFilter" and "SecurityFilter", or one at a time.
Your help is highly appreciated!
Desperate developer
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Apr 26, 2007
hi i want to know what is the differance between
Persist Security Info=False;Integrated Security=Yes;
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Oct 18, 2015
Is there any possibility to schedule SQL job execution as Windows Security Group? I need to run powershell script through SQL job with one of this group member's permissions.Â
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Jul 6, 2007
I have Sql Server Express installed on Vista (service pack 2)
I have Visual Studio 2005 with an application that I'm trying to access it with within a WCF service.
The login ID of the service is added to the database.
The database has remote access turned on.
The ID is granted access to all databases within the server.
The thread is being set with WindowsProvider and the services set their thread to WindowsProvider.
The dataserver is set with using Windows Authentication for security.
When I open my connection to the database, though, it reports the typically useless message that the connection is not allowed and that the server may not allow remote connections.
How to I get past this? I've done everything right.
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Jun 18, 2007
I want to use an Active Directory security group that is a Distribution List for a new role assignment for an existing report. Can someone tell me if this is possible? I get an error each time I try:
The user or group name <DLName> is not recognized. (rsUnknownUserName)"
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Jun 2, 2015
- When I disable "allow remote connections to this server" from server properties>connection page, I can still remotely connect to the server from SSMS...so what is the impact of enable/disabling it?
- what is the impact of changing the remote query timeout (on the same page) from default value?
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Aug 23, 2006
Fellow Devs,
I have an instance of SQL Server Express 2005 running on another box and I have Remote Connections enabled over both TCP/IP and Named Pipes, but on my other box I keep getting the error that the server does not accept Remote Connections.
Any ideas why this might be happening? Is there some other configuration?
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Jul 20, 2005
Is there anybody out there with a MS SQL 2K Security Baseline orSecurity Checklist. Where can I get one????Thanks in advanceDavid
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Feb 28, 2008
Hi;
I am looking for a way to log all security related events for SQL in Windows Security Log. I am trying to use SCOM for monitoring SQL and I am looking at ways to generate alerts in my SCOM Console for specific events in SQL e.g. A table is deleted, user is modified, deleted, etc. Is this possible and if yes how do I achieve the same?
Rgds;
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Aug 3, 2006
In an environment where there are many initaitors speaking to a central target with frowarders in between, from what i can understand this best policy is to disable encryption on the endpoints, since dialog encryption will be enforced this is all that is really required, is this correct.
If the endpoints used encryption the message would need to be encrypted and decrypted at each forwarder resulting in slower perfromance, where as dialog encryption would only encrypt at the sender and decrypt at the target, so is this the best way to go?
Secondly is it best practice to open a dialog initally and send messages over this dialog for years never ending the conversation? This way the services only have to authenticate eachother once, if there are no reboots etc that is of course.
I would think performance wise sending each message and ending the conversation each time is a much greater overhead ? So would it be best practice to keep dialogs open and keep sending messages ?
Initally when i was learning service broker i thought that one must send a message and end the dialog until the next message, but i think the other way is the best option ?
Is this correct ?
Thanx
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Feb 19, 2007
Hi
I'm designing a distributed application where I will have SQL Server 2005 distributed databases replicating data to my central hub which is again a SQL Server 2005 database using SQL Service Broker. Data will be sent from the central hub to the distributed sites and vice versa. I need to authenticate the communication and also secure the communication by encrypting the messages. Which security shall I use? Where do I configure the type of security being used? What is the difference between transport security Vs dialogue security - Full security model?
Thanks
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Oct 11, 2007
HiI'm going insane.I have a club starter kit on my local server which is working fine.I have migrated the database to my remote host and seems to have transfered ok.For a brief period I was able to connect to the database remotely, but now I cannot I get the following, even though SQL Server Surface Area Config is set to accept remote connections.An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: TCP Provider, error: 0 - A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.)This is my connection string;<add name="ClubSiteDB" connectionString="Data Source=xx.xxx.xx.xx,xxxx; Network Library=DBMSSOCN; Initial Catalog=tets; User ID=sqladminbob;Password=sqlbob4398;" providerName="System.Data.SqlClient="/>I hav also tried to use aspnet_regsql.exe to add the remote provider but I get the same message. Thanks
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