conf/62230: log-in-vain issues it's msg every time 'mail' command is used.

[JJB]

# The log_in_vain MIB will provide you with logging of attempted
# connections to your box on any port which does not have a service
# running on it. For example, if you do not have DNS server on your
# computer and someone would try to access your computer through DNS
# port 53, you would see a message such as: Connection attempt to
# UDP yourIP:53 from otherIP:X (where X is some high port #)
displayed
# on the root console screen. This message also gets posted to
# /var/log/messages & /var/log/security.log.
# The following statements enable this function.
# man tcp(4) and man udp(4) contain a little information on these
MIBs

net.inet.tcp.log_in_vain=1
net.inet.udp.log_in_vain=1
I believe this description is pirated from the old 4.7 LINT kernel
source file. The implied meaning is access you computer, as in from
the external interface. Thats how I read that.

On Mon, 2 Feb 2004, JJB wrote:

>  Log-in-vain purpose in life is to interrogate attempts from
>  the external interface, not the localhost internal functions,

woooh, who says that ? references ?


>  From what little documentation is published on Log-in-vain,
>  it is not functioning correctly, period.

please start reading with rc.conf(5) which will point you to more
documentation [tcp(4) and udp(4)].

--
Bjoern A. Zeeb                          bzeeb at Zabbadoz dot NeT
56 69 73 69 74                          http://www.zabbadoz.net/