topic Re: NTP Authentication in Network Access Control

NTP Authentication

thomsonb — Fri, 21 Feb 2020 18:23:47 GMT

I am having trouble getting my NTP to authenticate i can get it to sync with the ntp authenticate command out of the router 2 config and then enter it back in and it continues to sync but i am not sure if it is actually using the authentication at that point. here are the configs:

ROuter1 (Master):

ntp authentication-key 10 md5 Mysecret

ntp authenticate

ntp trusted-key 10

ntp server 192.192.192.192 source FastEthernet0/0

end

Router2:

ntp authentication-key 10 md5 Mysecret

ntp authenticate

ntp server 10.0.0.0 key 10

end

Re: NTP Authentication

Lucien Avramov — Wed, 23 Sep 2009 16:19:23 GMT

You have a configuration issue.

Read the following docs:

http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a008010e97e.shtml

And:

http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1001202

Re: NTP Authentication

thomsonb — Fri, 25 Sep 2009 13:25:59 GMT

Thanks for the reply, I had already figured out my mistake which was putting the trusted key command on the right client side box instead of the server box.

thanks for your reply