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Having sucessfully installed Zimbra on Debian, I am now looking to configure a firewall.
I have read some articles that suggest this is not necasary for a Zimbra machine.... it this correct?
Has anyone used iptables to protect there machine? are there any "known to work" debian iptables scripts available that have been proved to work?
It's not recommended to run a firewall (or SElinux) on the Zimbra server, your server should be behind a firewall that's provided on another server. If you want to try it search the wiki for 'firewall' and follow the suggestions there, YMMV.
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Debian Firewall 
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