I have setup my RPI 3 B+ model to act as an NTP server but I'm not able to sync my window machine to it.
The NTP server uses PPS from GPS devices (Adafruit ultimate GPS hat) attached to external antenna
The windows machine IP (acting as NTP client) 192.168.43.15 My RPI3 IP address (Has NTP server) 192.168.43.147
When I try to sync the windows machine to the RPI NTP server here is what I get:
The NTPQ -p result from the RPI is
When I ping the RPI IP from windows this is what I get https://i.stack.imgur.com/iX1ry.jpg
Here is my ntp.conf files setting
# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help driftfile /var/lib/ntp/ntp.drift # Enable this if you want statistics to be logged. #statsdir /var/log/ntpstats/ statistics loopstats peerstats clockstats filegen loopstats file loopstats type day enable filegen peerstats file peerstats type day enable filegen clockstats file clockstats type day enable # You do need to talk to an NTP server or two (or three). #server ntp.your-provider.example server 127.127.20.0 iburst true prefer fudge 127.127.20.0 flag1 1 refid GPSD server 127.127.22.0 iburst true prefer fudge 127.127.22.0 flag1 1 refid KPPS # pool.ntp.org maps to about 1000 low-stratum NTP servers. Your server will # pick a different set every time it starts up. Please consider joining the # pool: <http://www.pool.ntp.org/join.html> #pool 0.debian.pool.ntp.org iburst #pool 1.debian.pool.ntp.org iburst #pool 2.debian.pool.ntp.org iburst #pool 3.debian.pool.ntp.org iburst restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap logfile /var/log/ntp.log # Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for # details. The web page <http://support.ntp.org/bin/view/Support/AccessRestrictions> # might also be helpful. # # Note that "restrict" applies to both servers and clients, so a configuration # that might be intended to block requests from certain clients could also end # up blocking replies from your own upstream servers. # By default, exchange time with everybody, but don't allow configuration. #restrict -4 default kod notrap nomodify nopeer noquery restrict -6 default kod notrap nomodify nopeer noquery # Local users may interrogate the ntp server more closely. restrict 127.0.0.1 restrict ::1 # Clients from this (example!) subnet have unlimited access, but only if # cryptographically authenticated. # If you want to provide time to your local subnet, change the next line. # (Again, the address is an example only.) broadcast 192.168.43.147 #broadcast 220.127.116.11 # If you want to listen to time broadcasts on your local subnet, de-comment the # next lines. Please do this only if you trust everybody on the network! #disable auth #broadcastclient