How Can I Secure My Database??
Jun 16, 2007
hello all,
I've recently started using sql express 2005. I've used the features very conveniently.
But one thing i coudn't understand is how can i secure my database from unwanted access.
I've Installed Sql Express 2005 with mixed mode authentication (Sql authentication) and attached my Database. But it also connects with Windows authentication, and all my data tables are openly visible.!!
How can i Secure my database now..!!!
My intention is to restrict access to my databases only to certain users (may be SQL Logins)
Please guide me how to accomplish this...
Thanks
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Jul 10, 2007
Hello...
I develop a .NET Application which uses a SQL Express Database. The application will be distributet to several customers. That means the customer must have (or install) SQL Server Express Edition .
But we dont want that the users manual access to the database.
As far as understand that is not possible because the user (customer) will be the administrator for the SQL Server Express because it runs in his own PC (no password security).
Am I right? Thank you..
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Jan 10, 2007
Hello,
Is possible to create database file with only one user(No local acount used by Windows authentication)?
I want copy with my aplication also database mdf file with secret data .I don't want so as user loged to sql server as 'dbo' user ( Windows authentication) can view or edit it.
It is possible?
Ondra.
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Nov 1, 2006
Hello Experts!!
Let me start off by saying I'm not a SQL expert and have very limited knowledge on the topic.Here is my question:Our organization has an archiving solution that stores data in a SQL database. This applicaton creates two SQL accounts. One that is used to archive to the database. The second to browse the database from a search interface provided by the application. With all the federal compliance issues I see that they require the data to be stored in "a non-rewriteable and non-erasable format". My question is. How can I prevent the database from being erased in the SQL database? As 'Administrator' I can open Enterprise Manager and open a table in the database and simply delete any record that I wish. I understand that might have this ability because I'm logged on as Administrator. How do I prevent access to this database and prevent access modify the records. I believe the only two accounts that should have access to the database are the Archive and Browse accounts required by the application.
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Oct 29, 2007
hi,
My problem is, I am going to ship MSDE with our product. Now the problem is that if some one copies the .MDF and .LDF files and uses "sp_attach_db" to attach the db files to his own server then my database will be exposed to him. I have tried this and it gets exosed. I cant deploy NT Authentication for the database, bcoz if the end user installes Enterprise manager then my database will be exposed to him. Is there any way that i can sequre the LDF and MDF files of my database so that no one can use that with sp_attach_db? I m using MSDE(Sql server 2000).
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Oct 7, 2005
Ok, I need to give some details. I have a secure Access Database using WorkGroup Security logon. It is an Access 97 database (yes I know it is "old").
I tried to create a DTS package in SQL Server 2000 to connect to it, but I am getting the same error that I got before I "joined" the workgroup when attempting to access the DB. So I changed the Service logon identites to mimic <me> as the logon, and still I can't get it to connect. The user name and password I put in the connection are correct.
It seems like nothing is working and I am all out of ideas. Does anyone have any recommendations? Has anyone done anything like this successfully?
PS: I can manually logon to the database, and extract the data 1 table at a time, but I don't want to export 40 tables each time I have to load this data. Any help would be appreciated. Thanks in advance.
Frank
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Feb 21, 2014
We build up a new website in .net mvc 4.0 on a w2012 server with MSSQL 2012 database.We use windows autentification and normal anonymous access through NT AUTHORITYIUSR who is also a login in the database.But we make extra login possibility for users who are registered and they can insert and modify data in some tables in the database. And I'am afraid of giving NT AUTHORITYIUSR insert and update for some column in tables.I think of set up a new login for the database. Run a new connection string on login and set up special permission for that extra user on the database, and let the user become a member of the ordinary user on the database.
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Apr 21, 2015
Is there any way in which I could distinguish a group of Database users from the other users. Say for e.g. store the Database users hierarchically, etc. Adding a Prefix/Suffix to the user name as a distinguish-er will not work in my case. I want to restrict the deletion of these Database users. Even the login with sysadmin or serveradmin rights should not be able to DROP those Database users.
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Jun 13, 2006
Hi, i have a data base in SQL 2005 and i it has many tables with confidencial information Like Social Security numbers, Credit card Numbers, etc. And i would like to encrypt this information or make something to make this info invisible to any hacker, or any person that logs on the server.
Here are the limitations:
1 - I cant make any changes in the front end, so if i encrypt the data, I have to make all the modifications in the database, and if the front end needs some encrypted information, the database should dencrypt it.
Any one has any idea ???
Best Regards.
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Mar 21, 2007
Hi all,
I am developing an application for a big office which uses SQL Server 2000.
Apart from my database, on that server, there are two databases by other companies.
The administrator also has access to server but the client only wants him to backup the database.
I have two questions:
1) First of all (if it is possible) I would like to protect my own database from the other companies.
I don't want them to:
see the data in the tables (around 20 tables)
make changes to the stored procedures (more than 100 stored procedures)
be able to backup the database
2) The client will save sensitive data to the database (mainly currency amounts, salaries etc) which he wants to keep hidden.
I am using float type for these fields and I would like to make the data encrypted. I could do it for nvarchar fields but changing these float to nvarchar would be time consuming.
Thanks for your patience reading this!
Would really appreciate some help on any of these
Nicolas
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Sep 24, 2005
I am designing an application built on sql server 2000
how can I prohibit other sql server users from accessing my database and allowing only acceesing it through my application or through owner designer of sql server database.
my situation needs sometimes copying the db from the end user platforms to
my designer computer to analyze some problems or maintainenace or modification, and also I have no control on users windows environment and I need the end user professional not to enter the my db from outside my application.
So,
is there anything I can do to secure an MDF (MSDE/SQL Server 2000) file so that a user cannot see my schema under any circumstances.
Even if I lock the MDF down and secure the instance, a smart user can just shut off the SQL server, copy the MDF to another instance, sp_attachdb and open it with sa rights. I need a way to prevent others from getting inside my schema.
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Apr 28, 2008
Hi,
Do you guys know how to call secure FTP from a script task in an SSIS package which can be done by invoking the exe like winscp from a script task
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Apr 9, 2008
hi everybody ,
Can anybody tell me about Secure FTP
and how the code for uploading and downloading of files can be write using Visual C#
actually i have created code for Standad FTP(normal FTP), but when I am using it for secure FTP then the compiler is giving an Exception: "Unable to create Remote Server"
very confuse about what to do....??
even very small help would be very very appreciable
thanx .... Nics
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Aug 9, 2004
Database files (.mdf and .ldf) could be copied and explored by attaching them to any other instance of sqlserver.
How we could secure those files as we can do for Access file using a password ?
Thanks for any comment.
skentafi
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Nov 11, 2005
hi
this is my 1st time on this forum, I need to keep my DB secure on SQL server, that no body can enter into my DB and couldnt see my tables and other elements of DB.
Regards
AHK
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Mar 21, 2006
i need to set up a sql server login that can query the database, but i don't want it to be able to see scheduled jobs or dts packages
actually if i could keep it out of enterprise manager altogether that would be great
how can i set this up?
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Jun 30, 2005
If a user is a local admin of the box they can gain full access to the database via integrated security. They can create their own database and attach .MDF
How can i secure the .MDF so that no one can gain access to it?
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Mar 5, 2008
I have developed an application that uses a SQL Server compact edition database (.sdf). The database contains important data that I do not wish people to access.
My question is if I choose to Encrypt the database using the option available when you create the database and specify a password how secure is it ?
Are there tools on the market that will be able to crack this password and therefore gain access ?
Thanks
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Jul 20, 2005
We can find a lot of recommandations about how to secure a SQL*Server configuration.Does anyone have scripts to do it ?Any advices or links are welcome
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Jul 20, 2005
How would I set up secure replication between 2 servers that are indifferent cities?Would I need to define linked servers first?Would I use SSL?Help appreciated. Thanks.Steve*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
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Oct 24, 2006
Is it possible to secure a SQL Server database or schema using a technique such as the .Net StrongNameIdentityPermission attribute? The intent is that SQL Server would only permit transactions coming from assemblies which were signed with a particular .Net StrongName private key.
We are installing a 3rd party SQL Server / ASP.Net application which must run in our DMZ and we are looking for all possible measures to secure the SQL Server database.
Thanks
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Jun 30, 2005
If a user is a local admin of the box they can gain full access to the database via integrated security. They can create their own database and attach .MDF
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Feb 20, 2004
When I'm getting data from sqlserver using ado.net and a sqldataadapter, are the resultant network traffic packets secure? If I wanted to deploy my objects at a remote site, would I still be safe going straight to my sql server from there or should I build a web service and then auto generate 'remote' versions of my objects that will then communicate to the web service on https?
thanks
pat
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Oct 30, 2004
I connect to my clients SQL databases via Enterprise Manager. Most of the time the SQL server resides at a web host. A colleague recently told me that this is a huge security hole and I should be using Remote Desktop instead.
I would appreciate other input, opinions, and guidance on this issue.
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Aug 21, 2000
Hi!
Somebody knows if un-encrypt transact SQL is posible in sql 7? Thanks
Nestor Groel
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Jan 31, 2008
Hello,
I am trying to find software for configuring a secure connection between two SQL servers over the internet for our application that runs sql statements between two databases.
Mabey some sort of SSH software that is desinged for this? I have attempted to use VPN however this is not for a network, just 2 servers, no domain controller or DHCP server is available, they are connected directly to the internet.
Any ideas would be appreciated.
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Feb 5, 2008
Hello,
I have a project which I am working on that includes database support. The Database server has several databases hosted on it. Setting network security hardware/software aside for a moment and strictly talking about security handled by the Database server, is is good enough to rely on adding users to a databases "users" list or are there other things on the database server I should look at? We are using both Windows and SQL authentication. We have some users that are to have access to all the databases (Administrators and database operators) and some who will only be permitted to have access to a few of the databases (not all of them). Obviously there are other security concerns such as network firewalls and the such which are being handled by the IT team but I wanted to know if the simple 'add user to "users" list and remove for the rest' approach is all that can be done or if there is more that can be done on the SQL server.
Thanks!
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May 11, 2007
I'm trying to design a system where I can filter (not secure) a users results, the user may or may not pass in a user ID. We typically use middle tier connection pooling with a single identity, so I believe labelling is not suitable.
I think the ideal solution would be...
User to establishes a connection through our application, a user id will be established as part of the connection.
A view is created describing what the user is able to access. Preferably the user should not be aware of the view.
The user or our application executes a number of select queries.
Note that there may be many users with different filters required connecting at any time.
Direct user updates of the table do not need to be supported.
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Jan 20, 2006
Hi all.
I am developing an distributed VB.NET 1.1 application with a TripleDES capable socket layer for communication with my server app.
I need to secure the distributed app from the users within the organization I am developing it for (a franchise).
I do not wish to store any encryption keys in the source code as these would be obvious to any seasoned hacker through decompilation of my binaries (even with obfuscation). I have decided to use the windows DPAPI (under machine storage mode) to secure manually entered (at installation) encryption layer keys in the registry. The salt values for this DPAPI mode also need to be secured, as a disgruntled franchise owner may be the hacker (and hence would have admin privilege on the machine the software is installed on). Not as far fetched as you think !
This is the beginning of a vicious cycle. How do I secure and where do I store this salt value safely ? With it a hacker with admin privilige can easily decrypt my keys if they know I am using machine mode DPAPI. Can I use ACLs to protect the keys with an account I set up manually on the machine ? If so then I would need to be able to switch account identities in my code (which I haven't researched as yet) and then would need to store the password to that somewhere.
If anyone could offer any insight or direction it would be much appreciated.
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Feb 20, 2008
Can you suggest me , what command should i use to set the sa login for locking even after trying several times in SQL Server 2005.
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Sep 14, 2015
I have a query regarding how to secure my mdf file.
I'm sending my mdf file at the time of installation of the software, so I want to know how to protect my mdf file from other clients.
(So that they cannot see or access my tables and data present in it).
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Sep 30, 2007
This is the thread
http://msdn2.microsoft.com/en-us/library/ms998292.aspx
Here it mentions the following
Deployment Considerations
When using Windows authentication to connect to SQL Server in production
environments, consider the following:
Use a custom service account.
Create a SQL Server login for a Windows group.
Assign database permissions to a database role.
Use a Custom Service Account
This is my problem we are trying to convert all our web pages to use Windows Authenication.
DOMAINWEBGROUP (for example).
Tracey and Jack part of this group
But sometimes there may be anothers added to this say John
The security comes from SQL right now i give data reader to the database.
Example
1. ASP.NET uses the service account DOMAINWEBGROUP
2. Assign WEBGROUP to database PERSONEL
Table Employees
Salary
Web Page
Lets say Tracey logs into the web page.....and i have two pages
1. Employess
2. Salary
As the WEBGROUP is data reader viola Tracey sees all salary information.
Im trying to figure out that only Tracey can see Employees
But im not seeing the relationship when using WEBGROUP
Is there a way in SQL to say yes we have the DOMAINWEBGROUP
but in sql also put in Tracey and know that Tracey is part of DOMAINWEBGROUP
So that in my tables i can only give tracey part of this employee table (say the first name last name) and not salary information. (I know how to use the roles).
The part im confused about is the mapping WEBGROUP to tracey in sql as the web developers only pass in WEBGROUP
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Apr 10, 2007
I've been provided with a server at a hosting company. The server is running W2K3 SP2 in its own workgroup (i.e., non-AD) configuration, but is not behind any type of hardware firewall; there is no VPN in place, either. I connect to the server via RDP using an extremely long and complex password. I'm using the newest version of the RDP client. The article "Hacking RDP" and the ensuing reader comments (http://mcpmag.com/columns/article.asp?EditorialsID=1699) indicate that using RDP in this fashion is relatively safe.
I installed SQL Server 2005 SP2 on this server. I set server authentication to 'SQL Server and Windows Authentication mode'. I created one obscure SQL Server login, using another extremely long and complex password. I also disabled the login for the 'sa' account.
Since installing SQL Server on this server, I've noticed thousands of Failure Audit events in the server's Application log:
Source: MSSQLSERVER
Description: Login failed for user X
where X equals 'administrator', 'root', 'server', 'database' 'sql', 'sa', etc.
These failure events occur almost non-stop, about a dozen per second, and come from a small pool of unknown IP addresses. The IP address seems to change every few hours. I'm guessing that someone is hoping that one of these names is an actual SQL Server login and is trying a brute-force attack to try to stumble upon a matching password. None of these logins are valid, but it's still disconcerting. Is this anything to be concerned about? I could have the hosting company block the IP addresses, but that seems like a losing battle.
Lastly, I used the Surface Area Configuration tool to allow local and remote connections, using TCP/IP only--so that I could begin interacting with this SQL Server from my PC, using both SQL Server Management Studio and my own Visual Studio code. For each method, I'm using the obscure SQL Server login that I created earlier--the one with the extremely long and complex password. How (un)secure is my traffic to/from this SQL Server? I don't believe that my credentials are encrypted, but I'm not sure how much of a risk this is nor do I know how else to more securely connect to SQL Server.
Given these circumstances, is there any way to make this resource more secure? Thanks!
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