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II am working on a project where I need to create a virtual machine that acts like a home gateway, so I am looking for the firewall/NAT that is most flexible. My hope would be that I could give some configurations that would make the VM act like some of the gateways typically installed in homes and small offices.

Has anyone tried this before? Which software might be best for this? I can use any OS, so it could be pf, pfSense, iptables, ipfw, ipfilter, or even something more obscure. Any clues are appreciated.

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closed as not constructive by EEAA, Zoredache, kce, Wesley, Khaled Jun 8 '12 at 19:50

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.If this question can be reworded to fit the rules in the help center, please edit the question.

DD-WRT can install on x86. Your question is likely to be closed though since Product, service, or learning material recommendations is off-topic per the FAQ. – Zoredache Jun 7 '12 at 22:59

Install smoothwall into a VM running on the hypervisor of your preference. You will need a lot of NICs or if you use switching that supports vlan tagging you can make do with less.

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