Security Permission Issue with C# EXE on Intranet

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Guest

Hi,
My Problem: I have a C# EXE which writes a TXT file with results. It works
perfect on my local computer, but when I try to run it from our network
server (Drive G:), I am getting a
System.Security.Permissions.SecurityPermission error.
I found a lot of hints on the internet, also the .NET Framework
Configuration Utility, but I was not successful at all.
Has somebody a very simple to understand solution, what I have to do, to
bring this EXE on the server to run?
Thanks in advance
Johann Pietschnig
(e-mail address removed)
 
Johann,

The .NET framework configuration utility is the way that you want to go.
You will want to create a new security policy based on the assemblies strong
name, or on it's hash (a strong name is better, IMO). Then, you assign it
the permissions you want it to have.

Hope this helps.
 
Hi Nicholas,

Thank you for your fast response. Would you know any resource (web site,
book, etc.) which shows you step by step how to perfom this task in the
configuration utility. I tried it, but was not successful.

Thanks again
Johann Pietschnig



Nicholas Paldino said:
Johann,

The .NET framework configuration utility is the way that you want to go.
You will want to create a new security policy based on the assemblies strong
name, or on it's hash (a strong name is better, IMO). Then, you assign it
the permissions you want it to have.

Hope this helps.


--
- Nicholas Paldino [.NET/C# MVP]
- (e-mail address removed)

Johann Pietschnig said:
Hi,
My Problem: I have a C# EXE which writes a TXT file with results. It works
perfect on my local computer, but when I try to run it from our network
server (Drive G:), I am getting a
System.Security.Permissions.SecurityPermission error.
I found a lot of hints on the internet, also the .NET Framework
Configuration Utility, but I was not successful at all.
Has somebody a very simple to understand solution, what I have to do, to
bring this EXE on the server to run?
Thanks in advance
Johann Pietschnig
(e-mail address removed)
Click to expand...
Click to expand...
 
Before attempting to grant additional permissions to your application, it
might be best to figure out whether you can find a way to accomplish the
desired functionality without elevating privilege. In this particular case,
does the user select the target file location via a file save dialog? If
not, does it matter where the file is located, or is it only important that
your application be able to locate the data?
 
Hi Nicole,
Thanks for your reply.

In my case the program makes a calculation and puts 2 numbers in a .TXT file
in the same directory. I think this is just a simple IO function.
Are there ways in .NET 2.0 to handle this in C# code?
Thanks again

Johann Pietschnig
 
When the application is run from the server, do you really want the file to
be saved to the server share? If not, what do you mean by "same directory"?
 
The purpose of the C# EXE is to hand over the .TXT file to a Visual Foxpro
Program, which is in the same directory as the C# .EXE on the server.
The Visual Foxpro Program is waiting for this TXT file and picks it up, as
soon as is generated.
This is just a Setup until the Visual Foxpro Program is also rewritten in C#.

Thanks

Johann Pietschnig
 
In most work environments it is usualy OK (and much simpler) to simply raise
the trust level of the Intranet (The Zone Security option) to "Full Trust".

Nicholas Paldino said:
Johann,

The .NET framework configuration utility is the way that you want to
go. You will want to create a new security policy based on the assemblies
strong name, or on it's hash (a strong name is better, IMO). Then, you
assign it the permissions you want it to have.

Hope this helps.


--
- Nicholas Paldino [.NET/C# MVP]
- (e-mail address removed)

Johann Pietschnig said:
Hi,
My Problem: I have a C# EXE which writes a TXT file with results. It
works
perfect on my local computer, but when I try to run it from our network
server (Drive G:), I am getting a
System.Security.Permissions.SecurityPermission error.
I found a lot of hints on the internet, also the .NET Framework
Configuration Utility, but I was not successful at all.
Has somebody a very simple to understand solution, what I have to do, to
bring this EXE on the server to run?
Thanks in advance
Johann Pietschnig
(e-mail address removed)
Click to expand...
Click to expand...
 
The default CAS permission grant for the intranet zone includes permission
to read from, but not write to, its directory of origin. This means that
you will either need to grant additional permissions to your assembly on the
client machine(s) or find an alternate means of saving the file. One option
that would not involve altering client-side permissions would be to pass the
data to a web service on the same server for writing to the desired target
file.

On the other hand, if you're using (or can upgrade to) v. 2.0 of the .NET
Framework, ClickOnce might also be an option. It would allow users to grant
additional permissions to your application without requiring separate
permission elevation steps. If you're using v. 1.x, you'll need to deploy
the policy modifications under administrative privileges. See
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetsec/html/entsecpoladmin.asp
for some options, and talk to your network admin. There may already be
something in place for distributing CAS policy changes and, if not, your IT
folks should still be involved in selecting CAS policy modification
approaches
..
 
Hi,

Try this:

1. Go to Administrative tools and select Microsoft .NET framework wizards
2. Select Adjust .NET security
3. Select Make changes to this computer
4. Select Local Intranet
5. Move the slider up to full trust
 
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