# # Shorewall -- /usr/share/shorewall/macro.NTPbrd # # This macro handles NTP traffic including replies to Broadcast NTP traffic. # # It is recommended only to use this where the source host is trusted - # otherwise it opens up a large hole in your firewall because # Netfilter doesn't track connections for broadcast traffic. # ############################################################################### #ACTION SOURCE DEST PROTO DPORT SPORT ORIGDEST RATE USER PARAM - - udp 123 PARAM - - udp 1024: 123