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Old 04-01-2008
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Join Date: Feb 2008
Posts: 10
Let NTP listen only on one interface

Hallo,

I have a machine which serves as NTP server. This machine has more (3) Network interfaces (+ loopback). By default NTP "binds" itself to all available interfaces, i.e. it listens on port 123 on all interfaces:

Code:
netstat -an|grep 123
udp        0      0  127.0.0.1.123          *.*
udp        0      0  1.2.3.4.123           *.*
udp        0      0  *.123                  *.*
udp        0      0  1.2.5.4.123           *.*
udp        0      0  1.2.6.4.123          *.*
I would like to "bind" NTP to only one interface, say the 1.2.3.4. Is it possible? I do not find any hint on the net.

Thanks.

p.s. I am interested in a solution for linux and HP-UX, in case of OS dependency.
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