1. NTP time서버 설정 확인
c:> net time /querysntp
2. NTP time 서버 1개 설정 (IP 사용)
c:> w32tm /config /syncfromflags:manual /manualpeerlist:time서버_IP /update
3. NTP time 서버 1개 설정 (DNS 사용)
c:> w32tm /config /syncfromflags:manual /manualpeerlist:time서버_DNS,0x1 /update
4. NTP time 서버 2개 설정
c:> w32tm /config /syncfromflags:manual /manualpeerlist:"time서버_IP1 time서버_DNS1,0x1" /update
5. NTP 서비스 재시작
c:> net stop w32time && net start w32time
