Because some naughty boys try to get in one of my
clients' Debian-server a couple of hundred times a day
I decided to shut down sshd when I don't need. With a
simple mechanisme I can start sshd from distance
whenever I want.
Just in case I might forget to close it when I'm
ready, I run the following script 4 times a day:
================
#!/bin/sh
DATE="/bin/date"
DATUM=$($DATE +"%Y-%m-%d-%H:%M")
SUBJECT="HOL/"$DATUM
AANTAL=`ps -ef | /bin/grep '/usr/sbin/sshd' |
/usr/bin/wc -l`
if [ $AANTAL -ne 0 ] ; then
/etc/init.d/ssh stop
/usr/bin/mail [EMAIL PROTECTED] -s $SUBJECT <
/usr/local/sbin/txt/uittekst
fi
==========================
The strange thing is that when I run the script
interactive, it doesn't try to shut down sshd when
it's not active.
But when I call the script from crontab it ALWAYS
sends me an email, in other words, $AANTAL is always
greater than 0. When I echo the value of $AANTAL I see
that running from crontab it is always 1, running the
script interactive it is always 0 (if sshd is not
active)
Why is there a difference between interactive and
cron?
Kind regards,
Joachim
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