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Samba Restrict File Sharing To Particular Users or Network Addresses

All my local Linux user accounts will be able to log in to my Samba server and access share. How do I restrict access to particular users or network subnet such as 192.168.2.1/24?

You can use TCP wrappers to limit subnet access via:

  1. /etc/hosts.allow - This file describes the names of the hosts which are allowed to use the local INET services, as decided by the /usr/sbin/tcpd server.
  2. /etc/hosts.deny - This file describes the names of the hosts which are NOT allowed to use the local INET services, as decided by the /usr/sbin/tcpd server.

For example, allow access to smbd service inside LAN only via /etc/hosts.allow:

smbd : 192.168.2.

However, samba may or may not be built to support tcp wrappers.

hosts allow: Samba Configuration

Open your smb.conf file and add the following line to [share]

[share]
  hosts allow = 192.168.2. 127.0.0.1

valid users: Samba Configuration

Open your smb.conf file and add the following line to [share]

[share]
  valid users = user1 user2 @group1 @group2

read only & write only: Samba Configuration

You can also set read and write access to set of users with the read list and write list directives.

[share]
     read only = yes
     write list = user1 user2 @group1 @group2

Examples

Make [sales] share read only but allow user tom and jerry to write it:

[sales]
     comment = All Printers
     path = /nas/fs/sales
     read only = yes
     write list = tom jerry

You can also configure iptables to allow access to the Samba server.

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{ 8 comments… add one }

  • Suvankar October 16, 2009, 10:26 am

    Hello! Sir,
    I have one question. That is “how can I share a specific file or folder in between three or four ubuntu based computer.
    plz. help..
    Thank you.

    • nixCraft October 16, 2009, 10:50 am

      Use nfs server and client to share files between Linux / UNIX computers.

  • Sebastian October 16, 2009, 11:24 am

    Hi!
    I do that using acl´s, is that wrong? or not engouraged??

  • nixCraft October 16, 2009, 11:39 am

    ACL are set on files and directory and not on share names. You can use ACL for controlling and tuning file level access.

    HTH

  • ipv6 learning November 11, 2009, 2:48 pm

    off-topic: how connect to shared folder using IPv6 without DNS Server, I mean connect using the IP.

  • dominicus December 1, 2011, 1:00 am

    Hi,
    Is there a way to limit the type of file in SAMBA? Let say only Word, Excel and PDF types only. Thanks in advance

  • www.nowfashionshowtime.org August 12, 2012, 4:23 pm

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  • nagendra February 6, 2015, 12:31 pm

    Hello! Sir,
    “how can I share a specific file or folder in between three or four windows based computer.
    plz. help..
    Thank you.

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