hi,
due to the recent spate of attacks on one of our mail servers i would like to protect it a bit more, by putting it behind a linux box.
i have iptables installed with mandrake 8.2
is it possible to send all connections from smtp and pop ports through the linux box and make them end up on the mail server?
so:
{internet} <------> [linux box] <---------> [mail server]
the internet is connected to the linux box via interface eth1
and the mail server runs on eth0 allong with some other stuff
is this possible? if so is there a howto?
or if possible please could some one tell me what should be added to iptables
?
thanks