> # IPv4 local connections:
> host all all 0.0.0.0
> 255.255.255.255 md5
> host all all 127.0.0.1/32 md5
oh. that first HOST line will only allow IP 0.0.0.0, hardly likely
to be a valid address. if you want to allow connections from ALL IPs,
use 0.0.0.0/0 or 0.0.0.0 0.0.0.0
the second line allows connections to localhost only.