# Accept incoming traffic on UDP port 2104 (zhm)
-A INPUT -p udp --dport 2104 -j ACCEPT

# It's hard to know what ephemeral ports the zephyr clients are listening on.
# Apparently they do not send outgoing traffic sufficient for the
# ESTABLISHED,RELATED rule above.  So for now we allow all UDP traffic.
#
# FIXME: do something better here.
-A INPUT -p udp -j ACCEPT