We are using some class in .NET like
System.Net
System.Net.Sockets
in our page. We used these classes to get the file from another ftp server, but we are getting an error regarding security.
like
Security Exception
Description:
The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.
Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
We also tried to solve this security issue by adding some permission tags in web.config file like
<location allowOverride="true">
<system.web>
<trust level="Full"/>
Server Error in '/' Application.
Configuration Error
Description:
An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: This configuration section cannot be used at this path. This happens when the site administrator has locked access to this section using <location allowOverride="false"> from an inherited configuration file.
Source Error:
Line 4: <system.web>
Line 5:
Line 6: <trust level="Full"/>
Line 7:
Line 8: <!-- DYNAMIC DEBUG COMPILATION
Even this didn't help us it gives some other error like "Administrator has locked the access". Please
You can nor modify "location allowOverride" setting from your application. It is restricted from higher level configuration like machine.config.
By default Only "full" or "high" trust levels have unrestricted "WebPermission" security permissions. All others are restricted to access resources only within that web application only. So if your impleemntation is trying to access any files outside or
trying to interact with files outside of your virtual directory, you will get this exception thrown at you.
Do you have access to th web server where application is hosted?
This problem may occur when the custom assemblies that are referenced in project do not have sufficient permissions.
To grant the required permissions to a custom assembly, follow these steps:
1. Assert permissions in your custom assembly.
2. Make the custom assembly available to project.
3. Reference the custom assembly in your project.
4. Modify the code access security settings for your custom assembly.
Assert permissions in your custom assembly To acquire the required permissions to run the code in your custom assembly, you must assert the required permissions in your custom assembly code.
For example, if you access data in Microsoft SQL Server tables by using the "System.Data.SQLClient" namespace in your custom assembly, you must add the following code to your custom assembly before you use the "System.Data.SQLClient"
namespace:
System.Data.SqlClient.SqlClientPermission pSql = new SqlClientPermission(System.Security.Permissions.PermissionState.Unrestricted); pSql.Assert();
If you access a file in your custom assembly, you must add the following code to your custom assembly before you access the file:
FileIOPermission filePerm = new FileIOPermission(FileIOPermissionAccess.Read, "C:\TestFile"); filePerm.Assert();
Similarly, if you access a Web service in your custom assembly, you must add code that is similar to the following to assert the Web permissions:
System.Text.RegularExpressions.Regex urlRegEx = new System.Text.RegularExpressions.Regex(@"http://www\.webcontinuum\.net/.*");
System.Net.WebPermission p = new System.Net.WebPermission(NetworkAccess.Connect,urlRegEx);
I'm having the same problem as the original poster - same scenario. I was excited because I thought I had finally found the solution when I saw Jonny's well written answer. Close! (Wah!)
My specific version of this problem is that the main site page (Default.aspx) will not load on my hosted site because it fails to load the MS enterprise blocks DLL, in this case Microsoft.Practices.ObjectBuilder. So, it's not in a custom component and not related
to reports.
If the hosting company has set trust to low or whatever, and you have a page that should be public (your login or splash page) how do you configure your site to allow this? Is there some tags that need to be put into the web.config? Note - we who are hosted
have no access to machine.config or any other IIS settings. Need a toe hold on this new concept -- haha, security a new concept. :( I know this is basic and there's just a step missing.
I was doing decryption and encryption with System.Security.Cryptography. I published my site to my server (godaddy too) and encountered a problem when the app tries to decrypt the ciphertext.
I also posted a ticket for this problem in this forum, but no one seems to be able to help me out.
paranthaman
Member
130 Points
26 Posts
Request for the permission of type 'System.Net.WebPermission
Aug 04, 2006 05:11 AM|LINK
hi
We are using some class in .NET like
System.Net
System.Net.Sockets
in our page. We used these classes to get the file from another ftp server, but we are getting an error regarding security.
like
Security Exception
Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.
Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
We also tried to solve this security issue by adding some permission tags in web.config file like
<location allowOverride="true">
<system.web>
<trust level="Full"/>
Server Error in '/' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: This configuration section cannot be used at this path. This happens when the site administrator has locked access to this section using <location allowOverride="false"> from an inherited configuration file.
Source Error:
Even this didn't help us it gives some other error like "Administrator has locked the access". Please
any one can suggest me
PrototypeDev...
Member
120 Points
24 Posts
Re: Request for the permission of type 'System.Net.WebPermission
Aug 04, 2006 01:04 PM|LINK
You can nor modify "location allowOverride" setting from your application. It is restricted from higher level configuration like machine.config.
By default Only "full" or "high" trust levels have unrestricted "WebPermission" security permissions. All others are restricted to access resources only within that web application only. So if your impleemntation is trying to access any files outside or trying to interact with files outside of your virtual directory, you will get this exception thrown at you.
Do you have access to th web server where application is hosted?
paranthaman
Member
130 Points
26 Posts
Re: Request for the permission of type 'System.Net.WebPermission
Aug 09, 2006 11:51 AM|LINK
hi
my application hosted in webserver (godaddy) ,
my application is working fine in local system ,
i getting the above error when i move to the hosting server , the also using asp.net 2.0
they said they not able to give permission (trust =full) becase asp.net not allow trust level= full
please help me , is there any other way to allow my application to access file from ftp ?
Thanl you
paranthaman
Member
130 Points
26 Posts
Re: Request for the permission of type 'System.Net.WebPermission
Aug 09, 2006 11:54 AM|LINK
hi
my application hosted in webserver (godaddy) ,
my application is working fine in local system ,
i getting the above error when i move to the hosting server , they using runtime version asp.net 2.0
they said they not able to give permission (trust =full) becase asp.net 2.0 not allow trust level= full
please help me , is there any other way to allow my application to access file from ftp ?
Thanl you
PrototypeDev...
Member
120 Points
24 Posts
Re: Request for the permission of type 'System.Net.WebPermission
Aug 09, 2006 12:02 PM|LINK
JohnySmithy2...
Participant
825 Points
159 Posts
Re: Request for the permission of type 'System.Net.WebPermission
Aug 12, 2006 03:59 AM|LINK
This problem may occur when the custom assemblies that are referenced in project do not have sufficient permissions.
To grant the required permissions to a custom assembly, follow these steps:
1. Assert permissions in your custom assembly.
2. Make the custom assembly available to project.
3. Reference the custom assembly in your project.
4. Modify the code access security settings for your custom assembly.
Assert permissions in your custom assembly
To acquire the required permissions to run the code in your custom assembly, you must assert the required permissions in your custom assembly code.
For example, if you access data in Microsoft SQL Server tables by using the "System.Data.SQLClient" namespace in your custom assembly, you must add the following code to your custom assembly before you use the "System.Data.SQLClient" namespace:
System.Data.SqlClient.SqlClientPermission pSql = new SqlClientPermission(System.Security.Permissions.PermissionState.Unrestricted);
pSql.Assert();
If you access a file in your custom assembly, you must add the following code to your custom assembly before you access the file:
FileIOPermission filePerm = new FileIOPermission(FileIOPermissionAccess.Read, "C:\TestFile");
filePerm.Assert();
Similarly, if you access a Web service in your custom assembly, you must add code that is similar to the following to assert the Web permissions:
System.Text.RegularExpressions.Regex urlRegEx = new System.Text.RegularExpressions.Regex(@"http://www\.webcontinuum\.net/.*");
System.Net.WebPermission p = new System.Net.WebPermission(NetworkAccess.Connect,urlRegEx);
p.Assert();
For more information about asserting permissions in your custom assembly, visit the following MSDN Web site:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/rsprog/htm/rsp_prog_rdl_0so6.asp
Smith
http://spaces.msn.com/johnysmith
AsleepInAtla...
Member
5 Points
1 Post
Re: Request for the permission of type 'System.Net.WebPermission
Aug 18, 2006 04:16 PM|LINK
My specific version of this problem is that the main site page (Default.aspx) will not load on my hosted site because it fails to load the MS enterprise blocks DLL, in this case Microsoft.Practices.ObjectBuilder. So, it's not in a custom component and not related to reports.
If the hosting company has set trust to low or whatever, and you have a page that should be public (your login or splash page) how do you configure your site to allow this? Is there some tags that need to be put into the web.config? Note - we who are hosted have no access to machine.config or any other IIS settings. Need a toe hold on this new concept -- haha, security a new concept. :( I know this is basic and there's just a step missing.
Thanks!
paranthaman
Member
130 Points
26 Posts
Re: Request for the permission of type 'System.Net.WebPermission
Aug 23, 2006 02:58 PM|LINK
hi
please help me how to over come this issue
thanks and regards
Paranthaman R
paranthaman
Member
130 Points
26 Posts
Re: Request for the permission of type 'System.Net.WebPermission
Aug 23, 2006 02:59 PM|LINK
hi
please help me to over come this issues
thanks regards
Paranthaman R
WishStar99
Contributor
2857 Points
879 Posts
Re: Request for the permission of type 'System.Net.WebPermission
Sep 06, 2006 08:57 PM|LINK
JohnnySmithy,
Thanks for the info.
I was doing decryption and encryption with System.Security.Cryptography. I published my site to my server (godaddy too) and encountered a problem when the app tries to decrypt the ciphertext.
I also posted a ticket for this problem in this forum, but no one seems to be able to help me out.
URL: http://forums.asp.net/thread/1387794.aspx
I will try your (johnnysmithy) info and put in my code and see what's going to happen. Thanks again.
WS