sshd에서 KeyRegenerationInterval 확인 방법

sshd server에 KeyRegenerationInterval field를 제어해서 동작을 확인하고

싶습니다.sshd_config 에 다음과 같이 설정하고 Server를 재구동 시켰습니다.

그런데, 어떤 변화도 없는것 처럼 보이는데, KeyRegenerationInterval를 확인할 수 있는

방법을 혹시 알고 계신분 있으신가요?

Manual에는 KeyRegenerationInterval 값이 새로운 키 재생성에 대한 간격을

설정하는 것이라고 나와있는데요.. 600초 이하는 안되는것인지?

Protocol 2,1
#ListenAddress 0.0.0.0
#ListenAddress ::

# HostKey for protocol version 1
HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 2
#ServerKeyBits 768
......

/etc/init.d/ssh 에는 다음과 같이 script file을 생성했습니다.

#! /bin/sh
#
# chkconfig: 2345 20 20
#
PATH=/bin:/usr/bin:/sbin:/usr/sbin
set -e

# /etc/init.d/ssh: start and stop the OpenBSD "secure shell(tm)" daemon

# Autokeygen control is located in /etc/default/ssh
. /etc/default/ssh

# Uncomment the following line to allow the script to autogenerate
# the required keys if they are not on the system.
AUTOKEYGEN=yes

test -x /usr/sbin/sshd || exit 0
( /usr/sbin/sshd -\? 2>&1 | grep -q OpenSSH ) 2>/dev/null || exit 0

if test -f /etc/default/ssh; then
. /etc/default/ssh
fi

check_for_no_start() {
# forget it if we're trying to start, and /etc/ssh/sshd_not_to_be_run exists
if [ -e /etc/ssh/sshd_not_to_be_run ]; then
echo "OpenBSD Secure Shell server not in use (/etc/ssh/sshd_not_to_be_run)"
exit 0
fi
}

check_privsep_dir() {
# Create the PrivSep empty dir if necessary
if [ ! -d /var/run/sshd ]; then
mkdir /var/run/sshd
chmod 0755 /var/run/sshd
fi
}

check_config() {
if [ ! -e /etc/ssh/sshd_not_to_be_run ]; then
/usr/sbin/sshd -t || exit 1
fi
}
setupKeys()
{
if [ ! -s /etc/ssh/ssh_host_key ]; then
/usr/bin/ssh-keygen -b 1024 -f /etc/ssh/ssh_host_key -N "" -t rsa1
chmod 700 /etc/ssh/ssh_host_key
fi
if [ ! -s /etc/ssh/ssh_host_rsa_key ]; then
/usr/bin/ssh-keygen -d -f /etc/ssh/ssh_host_rsa_key -N "" -t rsa
chmod 700 /etc/ssh/ssh_host_rsa_key
fi
if [ ! -s /etc/ssh/ssh_host_dsa_key ]; then
/usr/bin/ssh-keygen -d -f /etc/ssh/ssh_host_dsa_key -N "" -t dsa
chmod 700 /etc/ssh/ssh_host_dsa_key
fi
}

checkKeys()

{
if [ ! -s /etc/ssh/ssh_host_key ]; then
echo "ssh_host_key does not exist: generating new key:"
ssh-keygen -t rsa -f /etc/ssh/ssh_host_key -N ""
fi
if [ ! -s /etc/ssh/ssh_host_rsa_key ]; then
echo "ssh_host_rsa_key does not exist: generating new key:"
ssh-keygen -t rsa1 -f /etc/ssh/ssh_host_rsa_key -N ""
fi
if [ ! -s /etc/ssh/ssh_host_dsa_key ]; then
echo "ssh_host_dsa_key does not exist: generating new key:"
ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ""
fi
}

case "$1" in
start)
check_for_no_start
check_privsep_dir
# [ "$AUTOKEYGEN" = yes ] && setupKeys
# echo -n "Starting OpenBSD Secure Shell server: "
checkKeys
echo -n "sshd"
start-stop-daemon --start --quiet --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd -- $SSHD_OPTS
echo "."
;;
stop)
echo -n "Stopping OpenBSD Secure Shell server: sshd"
start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/sshd.pid
echo "."
;;

reload|force-reload)
check_for_no_start
check_config
echo -n "Reloading OpenBSD Secure Shell server's configuration"
start-stop-daemon --stop --signal 1 --quiet --oknodo --pidfile /var/run/sshd.pid --exec /usr/sbin/s
shd
echo "."
;;

restart)
check_config
echo -n "Restarting OpenBSD Secure Shell server: sshd"
start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/sshd.pid
check_for_no_start
check_privsep_dir
sleep 2
start-stop-daemon --start --quiet --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd -- $SSHD_OPTS
echo "."
;;

*)
echo "Usage: /etc/init.d/ssh {start|stop|reload|force-reload|restart}"
exit 1
esac

exit 0