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You should either add the users as local users on the ubuntu server or set up the ubuntu server to authenticate users to your windows AD via Samba and then they will be able to access the share 
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You should either add the users as local users on the ubuntu server or set up the ubuntu server to authenticate users to your windows AD via Samba and then they will be able to access the share

<div>
As explained by lidder, you have to create the users on the ubuntu server. <br />
<br />
The users can authenticated on Ubuntu machine itself.<br />
You could then run a ftp server to allow the users access to the files on the Ubuntu.<br />
Ensure that firewall rules on the Ubuntu machine allow ftp<br />
service to pass through.
</div>


As explained by lidder, you have to create the users on the ubuntu server.

The users can authenticated on Ubuntu machine itself.
You could then run a ftp server to allow the users access to the files on the Ubuntu.
Ensure that firewall rules on the Ubuntu machine allow ftp
service to pass through.

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<div class="content wysiwyg-content">
Hello, <br />
<br />
i need a solution for secure file sharing from ubuntu computer to other windows and linux clients across lan. <br />
<br />
i need to from clients to access shared folders from ubntu , &nbsp;i should add users for each one need to access files with read or read write permissions. <br />
<br />
how to do this ? <br />
<br />
i righted click the shared folder and tried to add users like windows but i failed. <br />
<br />
&nbsp;would u help me please? &nbsp; 
</div>
</div>


Hello, 

i need a solution for secure file sharing from ubuntu computer to other windows and linux clients across lan. 

i need to from clients to access shared folders from ubntu ,  i should add users for each one need to access files with read or read write permissions. 

how to do this ? 

i righted click the shared folder and tried to add users like windows but i failed. 

 would u help me please?   

File Sharing in Ubuntu

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

The Linux operating system, in all its flavors, has its own share of security flaws that allow intrusions, but there are various mechanisms by which these flaws can be removed, generally divided into two parts: authentication and access control. Authentication is responsible for ensuring that a user requesting access to the system is really the user with the account, while access control is responsible for controlling which resources each account has access to and what kind of access is permitted.