When managing access rules in the login module. Is there an explicit deny all at the end?
Let's say I have two roles: Administrator and Member
Administrators are allowed into the folder iPhone and Members are allowed in the folder Blackberry
I manage my rules and get the following code in each web.config:
"iPhone"
<system.web>
<authorization>
<allow roles="Administrator" />
</authorization>
</system.web>
"Blackberry"
<system.web>
<authorization>
<allow roles="Member" />
</authorization>
</system.web>
But can Administrators access the Blackberry folder and Members the iPhone folder? Or do I need to add a rule saying deny roles="Administrator"in the Blackberry folder and deny roles="Member" in the iPhone folder?
Thanks!!
I take it you mean using an ASP.net application...
Add in a:
<deny users="*">
after your authorized users.
I think you should also be using user rather than role
http://msdn.microsoft.com/en-us/library/wce3kxhd.aspx
When you create a new web application, all web.config settings (global, site and local) are merged together to form the configuration that's really in effect for this application. By default a local web.config does not contain an authorization section but inherits the one defined globally. So you alway end up with a entry.
http://www.leastprivilege.com/ASPNETAuthorizationSettings.aspx
Related
I am working on ASP.NET web application hosted on IIS 7.
I have to provide access to only authenticated users to a particular list of pdf kept in a folder "PdfFiles" in root directory.
I was trying below configuration settings in web.config, but it did not work, with this setting still this folder is accessible to all the users. I have form authenticated enabled for this site.
<location path="PdfFiles">
<system.web>
<authorization>
<deny users="?" />
<allow users="*"/>
</authorization>
</system.web>
</location>
Also I noticed that anonymous authentication was enabled for "PdfFiles" folder in IIS. If I disable this, it does not allow authenticated or anonymous, any of the user to access the pdfs.
So configuration change or IIS change, none of them worked. Can any one help me out on this issue?
I am quite new to ASP.NET technologies
<configuration>
<system.web>
<authorization>
<allow roles="Agency,Admin"/>
<deny users="*"/>
</authorization>
</system.web>
</configuration>
I have the above web.config for a folder, there is a requirement to give an elevated priviledge to some users in Agency role to access a page called AddOrganisation.aspx.
To solve this, I think I can add the following markup to the web.config but this will be static
<location path="AddOrganization.aspx">
<system.web>
<authorization>
<allow users="wale, etc, etc"/>
<deny users="*"/>
</authorization>
</system.web>
</location>
How can I enable adding users programmatically instead of updating the web.config for each change?
I will be grateful for your responses. Thank you
You should not make changes the web config at runtime, this will restart your application, every time you add a user. MSDN says this
Configuration Changes Cause a Restart of the Application Domain
Changes to configuration settings in Web.config files indirectly cause
the application domain to restart. This behavior occurs by design. You
can optionally use the configSource attribute to reference external
configuration files that do not cause a restart when a change is made.
For more information, see configSource in General Attributes Inherited
by Section Elements.
Instead you should give those users a different role, so that only those users can access the
"AddOrganisation.aspx" page.
Or else you can also do another thing if you dont want to create another role for these users. You keep on adding these users to a table and whenever a request is made to the page you can check if the users name is present in the table or not and then allow/deny the user.
I am building an ASP.NET 3.5 Web Application and I am NOT using the membership provider for security. In the application I have a role named Admin and all the files for this role are inside the Security folder in the project. Currently for all the pages inside the security folder I am checking to see if the logged in user's role is an Admin or not. This to me seems very redundant, can do something like "If the user is requesting a page inside the security folder then check his role". Is this possible?
You can place a separate web.config file in the Security folder that will deny access to every request to that folder if the user isn't in the Admin role.
Here's a quick walkthrough.
It would basically look like this:
<location path="Security">
<system.web>
<authorization>
<allow roles="Admin"/>
<deny users="*"/>
</authorization>
</system.web>
</location>
I have an asp.net web site, I want restrict all users to access a folder named "log" and I have this element in web.config:
<location path="log">
<system.web>
<authorization>
<deny users="*"/>
</authorization>
</system.web>
</location>
and this element before it in system.web:
<authorization>
<allow users="*"/>
</authorization>
but still I have access to this url: http://www.mydomain.com/log/log.txt
Any ideas?
Thanks.
.txt files are not handled by ASP.NET by default. You'll have to block access to the folder from within IIS.
If you're using IIS 7 you can use Request Filtering to achieve this.
to avoid this confusions I usually create one web.config file at the directories i need to set different permissions.
If you place a web.config file inside your log folder it will work ok (and it will become easier to check the applied permissions at the folder)
Example:
<?xml version="1.0"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<system.web>
<authorization>
<deny users="*"/>
</authorization>
</system.web>
</configuration>
I typed up a summary since many were facing the same situation regarding subfolder authentication.
Subfolder Authorization
ASP.NET can only have a single
authentication mode for one
application.
The different
applications CANNOT share resource
among them.
Scenario
Let's say the home page should not prompt login dialog. It should let users pass through without whatever login is. However, in the same applicatiopn, in a different folder presumably, another page needs to check user permission against database table using user network login ID. By default IE treats all web site with only hostname a Intranet. By its default intranet setting, it will not prompt the login dialog and pass user login and password to the application if Windows Authentication is used. However, the tricky party is, if the application has an actual domain, IE will think it is an Internet site, and it will prompt the login and password if Windows Authentication is used.
The only way to not to promopt login dialog for Internet site using Windows Authentication, is to also turn on the anonymous authentication in IIS. However, you will lose the ability to capture the login info because the Anonymous has precedence over the Windows Authentication. The good news is there is a way to resolve that issue. If an application subfolder needs to capture the login information, you will need to overwrite the parent authorization in Location element in web.config.
1 In IIS, configure Authentication as follows:
Enable Anonymous Authentication,
Enable Windows Authentication
2 Add the followings in Web.Config.
<authentication mode="Windows" />
<authorization>
<allow users="*" />
</authorization>
<!-- secured is the relative subfolder name. deny anonymous user, so only the authenticated login will pass through -->
<location path="secured" allowOverride="true">
<system.web>
<authorization>
<deny users="?" />
</authorization>
</system.web>
</location>
I have an existing ASP.NET application that implements Forms Authentication site-wide. The application is deployed in multiple instances (e.g., customer1, customer2, test, dev, etc...), with a separate database per instance. SSL is in play. Instance configuration is via an XML config file.
I have a new requirement to allow upload/download of certain data, which I would like to implement as a public web service.
My initial thought here was to selectively disable forms authentication for a subdirectory of the application (e.g., ~/Services), and then do authentication via a SOAP header or similar.
However, I'm not finding a way to selectively disable forms auth.
Question: Is there a way to do this? I've tried the <location> tag in web config to no avail.
If not, what are your recommendations for how to set this up? I can think of the following options:
1) Create a new "Services" project in my solution, and then configure a separate IIS ASP.NET application on that directory in each instance. (Pro: easy access to instance configuration, which may be needed in the future. Con: configuration burden for each relevant instance).
2) Create a separate "Services" solution that references needed assemblies from the application solution and host it as a separate ASP.NET application. Then, lookup the db connection string based on the UserName provided in SOAP Header. (Pro: single app to configure in IIS. Con: No easy access to instance config.)
3) ??
Clarification: I did see the answer here: Override ASP.NET forms authentication for a single page, but the use of a location tag is not helping (requests for the web service are still redirected). The relevant sections in my web.config look like this:
<system.web>
<authentication mode="Forms">
<forms loginUrl="Login.aspx"/>
</authentication>
<authorization>
<deny users="?"/>
<allow users="*"/>
</authorization>
</system.web>
<location path="~/Services/MyService.asmx">
<system.web>
<authentication mode="None" />
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
I would think the location tag would work, where you specify the services folder and allow all users, something like:
<location path="services">
<system.web>
<authorization>
<allow users="*"/>
</authorization>
</system.web>
</location>
But you said that didn't work, have you tried putting a web.config file in the services folder and disabling forms authentication and allowing all users in that file?
You could also have a (overriding) web.config file in the services folder with the access control set to anonymous.
what worked for me was to allow users all users access in the folder where my webservices is located.
Firstly i added a configuration file in that folder and inserted the code below to allow all users.
<authorization>
<allow users="*"/>
</authorization>
</system.web>