I chose user-defined servers since the default wasn't working: 0.sourcefire.pool.ntp.org, time.nist.gov, time.google.com. The management interface is set to use data interfaces as the gateway. I am remotely servicing this client through SSH.
This firewall is being set up with dual ISP failover, but still at the beginning. ISP1 is the outside interface (logical:outside), which was the original broadband primary. ISP2 is the current primary interface (logical:level3) on fiber. There is only a single outbound route to the ISP2 gateway. A single NAT rule from inside to ISP2, and two ACL policies from inside to both ISP1 and ISP2. Management Access>Data Interfaces has the default inside and outside, and the additional level3 interface (HTTPS,SSH,anyipv4).
Today, I am able to ping NTP servers, but still not syncing.
>show ntp
NTP Server : 44.190.6.254
Status : Unknown
Offset : 0.000 (milliseconds)
Last Update : - (seconds)
NTP Server : 216.239.35.12 (time4.google.com)
Status : Unknown
Offset : 0.000 (milliseconds)
Last Update : - (seconds)
NTP Server : 127.127.1.1
Status : Unknown
Offset : 0.000 (milliseconds)
Last Update : 7 (seconds)
NTP Server : 128.138.140.44 (india.colorado.edu)
Status : Unknown
Offset : 0.000 (milliseconds)
Last Update : - (seconds)
> ping 44.190.6.254
Sending 5, 100-byte ICMP Echos to 44.190.6.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 50/58/60 ms
> ping 216.239.35.12
Sending 5, 100-byte ICMP Echos to 216.239.35.12, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/20/20 ms
> ping 128.138.140.44
Sending 5, 100-byte ICMP Echos to 128.138.140.44, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 30/36/40 ms
