I have a directory where I am placing PDF files that are generated by my application. The issue is that since there are no aspx pages, the security in the web.config is not preventing direct navigation to those pdf's. Granted, the information is public, I just dont want someone to be able to go straight to them for a variety of reasons.
So the question is, how do I prevent access to that directory in a web.config file? here is what I have:
<configuration>
<appSettings/>
<connectionStrings/>
<system.web>
<authorization>
<allow roles="role1" />
<allow roles="role2" />
<allow roles="role3" />
<allow roles="role4" />
<deny users="*" />
</authorization>
</system.web>
You should be using an HttpHandler to accomplish file security you can map extensions through IIS and use these to handle mappings of each particular file type (ie: pdf, doc, exe, etc...)
Here is a link describing it...
http://www.15seconds.com/Issue/020417.htm
Related
I have an ASP.NET MVC app and some folder that contains a lot of images. This directory is located outside my app folder. And I want to use images from this directory in my app in web pages without copying them to app directory. I created virtual directory for my application in IIS and called it MyOuterDir. It references to outer images directory. Then I wrote in my web page something like this :
<img src='/MyOuterDir/some.png' />
But it doesn't work, I faced with error 404:
GET http://localhost:85/MyOuterDir/some.png 404 (Not Found)
Where am I wrong? How to make IIS (or browser) properly read images from virtual directory?
P.S. It doesn't work even I change reference to folder located in app directory
I would check your web.config file, make sure you have permission for the file system.
<location path="Folder/Logs">
<system.web>
<authorization>
<allow roles="Admin" />
<deny users="*" />
</authorization>
</system.web>
</location>
<location path="OtherFolder/Dump">
<system.web>
<authorization>
<allow users="*" />
<deny users="?" />
</authorization>
</system.web>
</location>
If you don't have permission you won't be able to find the file/Image
Try this way:
<img src='MyOuterDir/some.png' />
Good Luck!
I am using ASP.NET 4.5 OWIN Identity and attempting to block access to a directory for all but authenticated users. The directory contains raw files, so it isnt possible to wrap them in the ASP LoggedInTemplate tag.
When I try and prevent access to the directory to anonymous users, it fails.
I have tried adding the following to the main Web.config file:
<system.web>
<authorization>
<deny users="?" />
</authorization>
</system.web>
<location path="/docs">
<system.web>
<authorization>
<deny users="?" />
</authorization>
</system.web>
</location>
Doing this gives server 500 errors and highlight the location path="/docs" line as the source of the error. This is a hosted solution, so options for changing the IIS server config to allow overrides arent available to me, though that does seem one potential solution for anyone experiencing this issue.
I have now removed the above from the main web.config and added a separate web.config file in the directory that I want to protect. The new web.config contains this:
<?xml version="1.0"?>
<configuration>
<system.web>
<authorization>
<deny users="?" />
</authorization>
</system.web>
</configuration>
This gives no errors, but allows unauthenticated users access to the folder, which is what I am trying to prevent.
Any ideas or pointers to any article that describes how to resolve this would be much appreciated.
The solution to this for my environment was to use the web.config file in the sub directory, but to add a custom handler definition for the file types in question.
<?xml version="1.0"?>
<configuration>
<system.web>
<authorization>
<deny users="?" />
</authorization>
</system.web>
<system.webServer>
<handlers>
<add name="PDFHandler" verb="*"
path="*.pdf"
type="System.Web.StaticFileHandler"
resourceType="Unspecified" />
</handlers>
</system.webServer>
</configuration>
The web server then allows authenticated users only to access the files in the sub directory.
This article led my to the solution: http://www.primaryobjects.com/CMS/Article112
on local machine ,i created sample project on mvc4 (razor) and create directory named "x" and put a text file "a.txt" in it.
http://localhost:64471/x/a.txt
in my web config i deny all user to access to "x" folder by this config:
<location path="x">
<system.web>
<authorization>
<deny users="*"/>
</authorization>
</system.web>
Now if user send this request :
http://localhost:64471/x/
it works and return user to URL that defined in forms tag in web config.
but when user send this request :
http://localhost:64471/x/a.txt
can read text file in browser(browser shows contents of text file).
i want to know how to deny user to access all files and subfolders in "x" folder?
I know this is an old question, but if you are having issues and dealing with text or html files, you might want to refer to this stackoverflow question.
In short, you might need to add this to your web.config:
<system.webServer>
<modules>
<remove name="UrlAuthorization" />
<add name="UrlAuthorization" type="System.Web.Security.UrlAuthorizationModule" />
</modules>
</system.webServer>
As kirk points out, files such as .txt and .html files are handled by IIS and not ASP.NET, so the authorization rules aren't applied to them.
I tested with path="x" in root web.config. It restrict everything under x folder; it won't even let me browse ~/x. I get redirected to login page.
Could you try full path to a.txt like this in root web.config?
<location path="x/a.txt">
<system.web>
<authorization>
<deny users="*"/>
</authorization>
</system.web>
</location>
If it still doesn't work, you can try creating a web.config inside x folder with the following content.
<?xml version="1.0"?>
<configuration>
<location path="a.txt">
<system.web>
<authorization>
<deny users="*"/>
</authorization>
</system.web>
</location>
</configuration>
I have a website hosted in IIS with directory browsing disabled. The website is developed in ASP.Net, MySql and C#.
For e.g., If i type www.mysite.com/LoremIpsums/ then it shows 403 error. However if i type, www.mysite.com/LoremIpsums/IpsumLorem.pdf it shows/downloads the the PDF file. How to disable this?
I have searched on net and found sth like
<authorization>
<remove users="*" roles="" verbs="" />
<add accessType="Allow" roles="Administrators" />
</authorization>
If i use this in web.config, the user won't be able to download the pdf file even after logging in. So how to achieve file access only for logged in users. (Either using C# code or IIS Settings)?
Here you Go:
<location path="download">
<system.web>
<authorization>
<!-- Order and case are important below -->
<allow roles="user"/>
<deny users="?"/>
</authorization>
</system.web>
</location>
download is your folder where you want to restrict the anonymous user from direct access.
How to restrict folder access in asp.net
like I don't want any other to see my Uploads folder in browser by link http://www.example.com/Uploads
For the future generation the answer which works for me is to use hidden segments.
If you want to secure e.g. Uploads folder go to your root Web.config and add into <system.webServer> following element:
<security>
<requestFiltering>
<hiddenSegments>
<add segment="Uploads"/>
</hiddenSegments>
</requestFiltering>
</security>
This will prevent all users from direct access to Uploads folder and its content.
You can do like #klausbyskov mentions, to add <authorization />'s to the root web.config, like:
<location path="Admin">
<system.web>
<authorization>
<allow roles="Administrator"/>
<deny users="*"/>
</authorization>
</system.web>
</location>
or you can add a web.config to the folder where you want to allow/deny access with the following content:
<?xml version="1.0"?>
<configuration>
<system.web>
<authorization>
<allow roles="Administrator"/>
<deny users="*" />
</authorization>
</system.web>
</configuration>
Of course replace the <allow /> and <deny /> with you own rules
You should add a web.config file to said folder and put an <authorization> tag in the file, as described here.
You can manage folder browsing in IIS settings.,
Open IIS Manager and navigate to the folder you want to manage.
In Features View, double-click Directory Browsing.
In the Actions pane, click Enable/Disable.
This is for IIS7.
you can also use commandline for this.
appcmd set config /section:directoryBrowse /enabled:true|false
Hope this helps...
Happy Programming,