ClarkConnect

Free for personal use. I use it at home and also for our work firewall (paid version for work). Does nearly everything I want (DNS the exception).

Web, Firewall, FTP, SMTP, IMAP, POP3, NAT, Port forwarding, Intrusion detection etc.

Doesn't do DNS, but since it's Redhat based it's not that hard to add if you really need it.
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Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)