Ok, good to hear. I've just installed it and i'm getting weird e-mail's from guardian:
Guardian has blocked ip: eth1. (instead of e.g. 123.456.789.102)
I've tried the ./db configuration set ExternalInterface eth1 and also eth0, but none worked. Should I check the Interface's in snort.conf?
$HOME_NET and EXTERNALIP are both correct. Still snort is mostly logging my internal ipadresses.