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

[Ceri Davies]

On Mon, Feb 02, 2004 at 01:22:11PM -0500, JJB wrote:
> # 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.

You clearly didn't read the part where it says:

	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.

Ceri

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