안녕하세요 
 ublox u-center ntrip client 에서 

VRS서비스 ip RTS1.ngii.go.kr port 2101 접속시  error이 나옵니다.

14:04:29  Start NTRIP session.
14:04:29  Connected to NTRIP server.
14:04:29  Send mountpoint request (VRS-RTCM31)
14:04:30  Data received from server (73bytes).
14:04:30  ERROR: Logon failed: Check user name and password.
14:04:30  Ending NTRIP session.
14:04:30  Closing connection to server.
14:04:30  Connection error received (0).
14:04:30  Server connection closed.

그래서  www.gnssdata.or.kr 로 접속할시 

sourcetable 을 받을수가 없습니다.

17:37:45  Start NTRIP session.
17:37:45  Connected to NTRIP server.
17:37:45  Send mountpoint request ()
17:37:45  Data received from server (108bytes).
17:37:45  Connection error received (0).
17:37:45  ERROR: Server closed connection.
17:37:45  ERROR: Authentication failure.
17:37:49  Ending NTRIP session.
17:37:49  Closing connection to server.
17:37:49  Server connection closed.
17:37:50  Ending NTRIP session.
17:37:50  NTRIP session already closed.