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02-11-2006, 06:40 PM
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#1
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Member
Registered: Feb 2004
Location: Dallas
Distribution: Fedora
Posts: 59
Rep:
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DMZ. Basic Security Questions.
I have a http/ftp server setup in a dmz. I know 99.9% of the reason a server is in a dmz is so it doesnt have access to your lan.
However...
What if there are lots of files on your lan that you want to make public on a ftp server? Is there any -secure- way to do this without copying all the files from your lan to your dmz server?
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02-12-2006, 12:49 PM
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#2
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Senior Member
Registered: Nov 2003
Location: Knoxville, TN
Distribution: Kubuntu 9.04
Posts: 1,168
Rep:
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I think in general SSH v2's S/FTP features are the prefered method nowadays and good 'ole FTP is pretty much obsolete, security-wise anyway. Penn State has a good info page on the topic with current links: http://css.its.psu.edu/internet/ssh/
Last edited by Crito; 02-12-2006 at 12:50 PM.
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02-13-2006, 05:51 AM
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#3
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Member
Registered: Feb 2004
Location: Dallas
Distribution: Fedora
Posts: 59
Original Poster
Rep:
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So its ok to allow incoming connections into your lan without the need of a dmz?
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02-13-2006, 02:19 PM
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#4
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Member
Registered: Jul 2003
Distribution: Solaris 8/9, gentoo
Posts: 41
Rep:
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I would never allow any incoming connections to my internal lan. If I had to sync files on a dmz machine with an internal server, I would use rsync and initiate the connection from the internal network. Another possible solution would be to use a 2nd dmz network for the file server which only the ftp server has access to and whatever access the internal network needs to it. I think the best method though would be moving the files from the internal to dmz.
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02-13-2006, 11:31 PM
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#5
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Senior Member
Registered: Nov 2003
Location: Knoxville, TN
Distribution: Kubuntu 9.04
Posts: 1,168
Rep:
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Quote:
Originally Posted by hondaman
Is there any -secure- way to do this without copying all the files from your lan to your dmz server?
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Those were your requirements. So you've already decided that it's OK to open a port and that it's not OK to copy everything to a bastion file server in the DMZ (the prefered method.) Given those requirements, restricting internal access to SSH on port 22 (like Penn State did) would be the most secure way.
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02-14-2006, 12:10 AM
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#6
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Senior Member
Registered: Nov 2003
Location: Knoxville, TN
Distribution: Kubuntu 9.04
Posts: 1,168
Rep:
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And just to be 100% clear, bastion file server in the DMZ is prefered over SSH which is prefered over FTP. Only way you could possibly secure FTP is through an encrypted VPN tunnel.
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