Write permission to linux folder

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http://stackoverflow.com – Scenario: ASP.NET MVC 3 application Window Server 2008 IIS 7 Network Mapped Drive( Z:/ with IP (..*.*)) to the share folder named samba of Linux machine. Putty application Promblem I have ASP.NET MVC 3 application to upload file to network mapped drive i.e. share folder samba but it shows the error Access is denied while uploading the file to that folder. I can't provide the write permission to that folder from security option. Question How to provide the write permission to the samba share folder for specific user like NETWORK Service? Can I do this from Putty application? what are th (HowTos)