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How to configure DMZ Backup - dual NIC - security

Posted on 2009-05-01
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Last Modified: 2013-12-04
Want to create a separate backup network to offload traffic on production network. Multiple servers will have dual-NIC's' one for production network and one for dedicated backup network. Backup NIC's will be wired to a separate physical unmanaged GB switch and live on a separate IP subnet, without a default gateway defined. Backup Exec 11d is used for backup. I need to know the best way to secure our production servers with this setup. Is it secure to use the windows firewall along with IP filtering in IP properties. Just looking for thoughts on that as well as other security measures I should consider.
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Question by:emsed
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by:Multipath
ID: 24278930
Just to clarify you are asking about the setup for the backup network connected to the DMZ or for the entire design and setup
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by:emsed
ID: 24279182
Not the entire design, unless what I am doing is way off. The production DMZ network is setup and isolated by a corporate firewall, all security in place. Adding (2nd) NIC's to the servers for backup and then connecting all these servers to a separate physical switch raised security concerns for me. So, I am focused on setup of the backup network and security.
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Multipath earned 1000 total points
ID: 24281250
Might I suggest an iptables firewall for seperation so you can keep using you existing architecture and buisness continuity with out sacrafising the security setup you are trying to achieve.  Also remember that a firewall is only as good as it's rulebase.  
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Author Comment

by:emsed
ID: 24281420
My expertise is in Windows (16 years), not much in Linux but I'm sure I could use it if Im convinced thats the way to go. I would have used our production firewall but the ports are only 100MB and that will hurt my GB throughput backup network. If I were to go with this solution, I'm not sure I would know how to setup the network portion, etc because of my lack of experience with Linux. Thank you for your suggestion.
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Author Comment

by:emsed
ID: 24297017
OK, does anyone know of a good and inexpensive firewall I can purchase to secure my DMZ backup traffic from my internal backup server. I would want GB port speeds as well. Thank you in advance..
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