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netstat output question
https://forum.linode.com/viewtopic.php?f=19&t=8043		 Page 1 of 1
Author:  Ericson578 [ Sat Nov 12, 2011 10:13 pm ]
Post subject:  netstat output question
netstat -a -> outputs:

edit: added the column headers:

Code:
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
udp        0      0 <domain redacted>.:47949 50.28.8.224:ntp         ESTABLISHED
udp        0      0 <domain redacted>.:52313 mail.freerip.com:ntp    ESTABLISHED
udp        0      0 <domain redacted>.:52074 conquest.kjsl.com:ntp   ESTABLISHED
udp        0      0 <domain redacted>.:52148 barricade.rack911.c:ntp ESTABLISHED



What are these, and should I be concerned?
Author:  mnordhoff [ Sat Nov 12, 2011 10:54 pm ]
Post subject: 
It seems to be your NTP (time synchronization) client, connecting to some NTP servers -- probably NTP pool servers, which are run by volunteers of varying reputability, but serve good time.
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