[root@zetawiki ~]# rdate time.windows.com
rdate: timeout for time.windows.com
- rdate: timeout for
- rdate: Could not connect socket: Connection timed out
1 테스트
1.1 CentOS
- 실패
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[root@zetawiki ~]# rdate ntp.kornet.net
rdate: timeout for ntp.kornet.net
- 성공
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[root@zetawiki ~]# rdate time.nist.gov
rdate: [time.nist.gov] Fri Mar 25 21:16:13 2016
Copy
[root@zetawiki ~]# rdate time.bora.net
rdate: [time.bora.net] Fri Mar 25 21:16:00 2016
1.2 우분투
- 실패
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root@zetawiki:~# rdate time.windows.com
rdate: Could not connect socket: Connection timed out
Copy
root@zetawiki:~# rdate ntp.kornet.net
rdate: Could not connect socket: Connection timed out
- 성공
Copy
root@zetawiki:~# rdate time.nist.gov
Fri Mar 25 21:11:48 KST 2016
Copy
root@zetawiki:~# rdate time.bora.net
Fri Mar 25 21:11:49 KST 2016
2 37포트 확인
- 실패
Copy
[root@zetawiki ~]# nc -z ntp.kornet.net 37 -w2
[root@zetawiki ~]# nc -z time.windows.com 37 -w2
- 성공
Copy
[root@zetawiki ~]# nc -z time.nist.gov 37 -w2
Connection to time.nist.gov 37 port [tcp/time] succeeded!
[root@zetawiki ~]# nc -z time.bora.net 37 -w2
Connection to time.bora.net 37 port [tcp/time] succeeded!
[root@zetawiki ~]#
3 같이 보기
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