[ale] Cross platform notification

Lightner, Jeff JLightner at water.com
Mon Jan 13 08:59:54 EST 2014


So then netcat isn’t the risk – your users are.

Of  course if you have iptables only opening ports you expect to listen on for your various packages then there is no risk even if someone does start an unauthorized listening port with netcat as the firewall won’t let anyone connect to that port.



From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Matt Hessel
Sent: Sunday, January 12, 2014 11:55 AM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] Cross platform notification


Exactly
On Jan 11, 2014 6:26 PM, "James Sumners" <james.sumners at gmail.com<mailto:james.sumners at gmail.com>> wrote:
I think he's balking at even having netcat installed on the system. My opinion is that if you have someone with enough access to the system to run nc in that manner then you have bigger problems. And if it's a legitimate user doing it without understanding the problem, you still have bigger problems.

On Saturday, January 11, 2014, Alex Carver wrote:
Right that's understandable but that's NOT what I'm doing with netcat.
I'm using netcat to SEND, not receive.  The receiving program is a full
program that does only one function not a random netcat listening on a
port.  The daemon that I want to give the ability to send notifications
to other clients has its output formatted and sent via netcat to those
clients:

$ daemon.program | notifier.processing.script &

#notifier script:
if ( input == some.condition )
   cat condition.message.file | netcat remote.client notification.port
fi

There's no listener here at all with netcat.



--
James Sumners
http://james.roomfullofmirrors.com/

"All governments suffer a recurring problem: Power attracts pathological personalities. It is not that power corrupts but that it is magnetic to the corruptible. Such people have a tendency to become drunk on violence, a condition to which they are quickly addicted."

Missionaria Protectiva, Text QIV (decto)
CH:D 59





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