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ntp and CA

 
  • Aug 31, 2022

NTP Cisco configuration

check the time

show clock

manualy set the time on a device

set clock 16:00:00 31 August 2022

Configure Timezone & Daylight Saving Time

conf t
  clock timezone CET 1
  clock summer-time PDT recurring
end

Sync to Internet Time Server / Lookup on www.pool.ntp.org

conf t
  server 80.127.119.186
end

set the router as Stratum 1

conf t
  ntp master 1

point the router to master NTP

conf t
  ntp server <IP_Addess>

configure NTP peer

conf t
  ntp peer <peer_IP>

Config CA Server

conf t
  ip http server
  ip domain-name ibogovic.net
  crypto key generate rsa general-keys modulus 4096 exportable
  crypto pki server The-CA-Server
  grant auto
end
  • You will need to enter a password after the no shutdown
no shut
exit

Optional → enroll R2 with itself

  crypto pki trustpoint My_CA
  enrolment url http://10.0.0.2:80
  revocation-check none
exit

  crypto pki authenticate My_CA
  crypto pki enroll My_CA
end

Wait until sync

  show ntp status
  conf t
  ip domain-name ibogovic.net

  crypto key generate rsa modulus 4096
  crypto pki trustpoint My_CA
  enrollment url http://10.0.0.2:80
  revocation-check none
exit

  crypto pki authenticate My_CA
  crypto pki enroll My_CA
end

show certificate

show crypto ca certificate My_CA
end
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