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Old 12-21-2006, 02:26 PM   #1
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securing samba to a particular subnet or eth device?

We have two servers, one running Windows 2003 the other running Redhat Ent. Linux 4. The servers each have dual-port network cards and are on two disjoint networks. They have:

An external address - an IP allocated to us by our ISP, from which we run services to the outside world (http, ftp and ssh on RHEL; ftp and mms on Win2k3)
For example, an IP of 61.209.100.* under a subnet of

An internal address - an IP from behind our firewalled router, from which we want SMB shares accessible at large.
For example, an IP of 192.168.0.* under a subnet of

Now, on the windows machine we have Client and File/Printer sharing disabled on the external connection. What we'd like to do on the RHEL machine is configure samba to only listen on local addresses (192.168.0.*, subnet, OR configure it to only listen from one of the eth devices, whichever is better/safer/easier. Can this be done, and if so, could someone kindly instruct us on how?

I appreciate any response, thanks!
Old 12-21-2006, 02:47 PM   #2
Registered: Feb 2004
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Try this in your smb.conf - replace br0 with the eth device you want Samba to listen on:

interfaces = br0
bind interfaces only = Yes
Old 12-21-2006, 02:48 PM   #3
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Registered: Jan 2003
Location: Seymour, Indiana
Distribution: Distribution: RHEL 5 with Pieces of this and that. Kernel, KDE 3.5.8 and KDE 4.0 beta, Plu
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Edit the /etc/samba/smb.conf file. If the default exist then near the top is a line like this.
 ;   hosts allow = 192.168.1. 192.168.2. 127
Change to something like
    hosts allow = 192.168.0. 127
Old 12-22-2006, 10:00 AM   #4
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fantastic, thanks for the advice! someone else linked me to the samba docs as well, so that will be helpful too.


samba, security

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