How to start without password

Hi!

I want to make very secure postgresql and not allow
connections witout passwords. I also remove all trusts
from pg_hba.conf.

Whe i start server i have to type my password. I want to know
how can i then start at boot. I can't try because I can't
boot whenever i want. I just want to be sure that if server
crash would start postgre at boot time without that pass.

And another question. I don't use tcp/ip sockets and i found
that postgre is listening on udp port

pgsql postgres 172 4 udp4 127.0.0.1:1024 127.0.0.1:1024
pgsql postgres 168 4 udp4 127.0.0.1:1024 127.0.0.1:1024

is this normal or am i missing something in config.

--
bye,
Uros mailto:uros(at)sir-mag(dot)com