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Old 04-06-2004, 07:32 PM   #1
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Registered: Apr 2004
Distribution: Mandrake (9.0)
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samba stops when MDK integrated firewall activated

Sorry to bother; I've searched for "firewall" in this forum with no luck, though I've learned some strange things...

How do I allow samba file sharing through a firewall?

I have a Mandrake 9.0 machine successfully sharing and browsing on my home network. When I activate the firewall offered from the Security section under Control Center, none of the other machines can 'see' this computer at all. I can ping it with no problem, but it no longer appears under Network Neihborhood on Windows machines and I can't find it by \\name or \\ip. This happens even when I select all of the services listed under "Which services would you like to allow..." These services are Web Server, DNS, SSH, FTP, Mail Server, POP and IMAP Server, and CUPS.

All the machines are connected through a router with its own firewall so I probably don't really need anything more. I tried disabling the router's firewall and trying again, but I still had the same problem.

Thanks for your time.
Old 04-06-2004, 08:13 PM   #2
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The router firewall should not have anything to do with the internal network. I assume its a hardware firewill like a Dlink or Syslink.

Samba in unrelated to any web server, DNS, SSH, FTP, Mail Server, POP and IMAP Server, and CUPS. It uses ports 137,138,139 and 443. If you want to run a firewall you will need to open these ports. I do not suggest disabling the router's firewall with these ports open because it is quite easy to gain access to your PC's
Old 04-06-2004, 09:59 PM   #3
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perfect -- thank you!

I was shocked to receive an answer so quickly. Thanks so much, michaelk. And the router is Linksys, by the way, though I guess it doesn't matter.

It took me a little bit to implement this fix, so in case anyone else needs it (or in case I've done something blindingly stupid), here is what I entered into the ports area (click "Advanced"):

137/udp 138/udp 139/udp 443/udp 137/tcp 138/tcp 139/tcp

I'm very new to network security things, especially in Linux, so I apologize that I wasn't able to figure out what file was actually changed by the "drakfirewall" wizard. In the scripts I've seen elsewhere in this forum, I think there will be lines "tcp_ports=" and "udp_ports=", but I don't know.

I think the only one necessary might be "139/tcp". I don't actually know what any of these things do, but when I leave that as the only one on the line and restart samba, I can still view and modify files as before the firewall.

Last edited by arete1969; 04-06-2004 at 11:23 PM.


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