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Correct NTP Authentication ?
Both will work, one is overconfigured.
The server does not do authentication, the server hands out the time and a key.
Clients authenticate whether the time received is valid.
— Michy Eika wrote:
> Hello folks > > I’m confused about NTP authentication. > In accord with following web site, In the side of > NTP master > authentification configuration is like below. > > http://www.cisco.com/en/US/tech/tk869/tk769/technologies_white_paper09186a00 > 80117070.shtml > > ######################################################## > ntp master 3 > > > !— When the system sends an NTP packet, the > !— source IP address is normally set to the > !— address of the interface through which the > !— NTP packet is sent. > !— Change this to use loopback0. > > > ntp source Loopback0 > > > !— Enables NTP authentication. > > > ntp authenticate > ntp authentication-key 1234 md5 104D000A0618 7 > ntp trusted-key 1234 > > ######################################################## > > But in IEWB-RS following website, the configuration > is such as below. > http://www.internetworkexpert.com/resources/ntp-authentication.htm > > ######################################################## > > R1#clock set 00:00:00 1 Jan 2000 > R1#conf t > Enter configuration commands, one per line. End > with CNTL/Z. > R1(config)#ntp master 1 > R1(config)#ntp authentication-key 1 md5 CISCO > > ######################################################## > > Which one is correct ??? > > TIA > > Michy > >
