Sep
27
Linux Socket Programming 책을 공부하다가 daytime 서버를 이용한 예제가 있어서 따라하던 중, 문득 내 리눅스 머신에는 daytime 데몬이 가동중이지 않다는 것을 알게 되었다.
잠시 구글링을 한 결과 알게 된 경로를 이곳에 정리한다.
한국의 경우, 보통은 time.bora.net 의 ntp 서비스를 사용한다.
아래는 daytime 서비스를 위한 미국의 서버 리스트들이다.
http://tf.nist.gov/tf-cgi/servers.cgi
| Name | IP Address | Location | Status |
| nist1-ny.ustiming.org | 64.90.182.55 | New York City, NY | Recommended for new users |
| time-a.nist.gov | 129.6.15.28 | NIST, Gaithersburg, Maryland | Ok |
| time-b.nist.gov | 129.6.15.29 | NIST, Gaithersburg, Maryland | Ok |
| nist1.aol-va.symmetricom.com | 64.236.96.53 | Reston, Virginia | Recommended for new users |
| nist1-pa.ustiming.org | 206.246.122.250 | Hatfield, PA | Ok — recommended for new users |
| nist1.columbiacountyga.gov | 68.216.79.113 | Columbia County, Georgia | Recommended for new users |
| nist1-chi.ustiming.org | 208.66.175.36 | Chicago, Illinois | Recommended for new users |
| nist.expertsmi.com | 173.14.47.149 | Monroe, Michigan | Recommended for new users |
| nist.netservicesgroup.com | 64.113.32.5 | Southfield, Michigan | Recommended for new users |
| nisttime.carsoncity.k12.mi.us | 66.219.116.140 | Carson City, Michigan | Recommended for new users |
| wwv.nist.gov | 24.56.178.140 | WWV, Fort Collins, Colorado | Recommended for new users |
| time-a.timefreq.bldrdoc.gov | 132.163.4.101 | NIST, Boulder, Colorado | Ok |
| time-b.timefreq.bldrdoc.gov | 132.163.4.102 | NIST, Boulder, Colorado | Very busy |
| time-c.timefreq.bldrdoc.gov | 132.163.4.103 | NIST, Boulder, Colorado | ok |
| time.nist.gov | 192.43.244.18 | NCAR, Boulder, Colorado | Very busy |
| utcnist.colorado.edu | 128.138.140.44 | University of Colorado, Boulder | ok |
| utcnist2.colorado.edu | 128.138.188.172 | University of Colorado, Boulder | ok |
| ntp-nist.ldsbc.edu | 198.60.73.8 | LDSBC, Salt Lake City, Utah | temporary network problem |
| nist1-lv.ustiming.org | 64.250.229.100 | Las Vegas, Nevada | ok — Recommended for new users |
| time-nw.nist.gov | 131.107.13.100 | Microsoft, Redmond, Washington | ok |
| nist1.aol-ca.symmetricom.com | 207.200.81.113 | Mountain View, California | ok |
| nist1.symmetricom.com | 69.25.96.13 | San Jose, California | Recommended for new users |
| nist1-sj.ustiming.org | 65.50.199.148 | San Jose, California | system to be moved to new location |
| nist1-la.ustiming.org | 64.147.116.229 | Los Angeles, California | Recommended for new users |
