if I may offer my $0.02 ---
https://www.speedguide.net/port.php?port=3478 shows port 3478 being used for
firewall traversal -- that ought to scare the A%$&^# out of everyone!
Code:
3478 tcp,udp stun Simple Traversal of UDP Through NAT (STUN) port. It operates on port 3478 tcp/udp. It is usually supported by newer VoIP devices. SG
3478 tcp,udp stun Session Traversal Utilities for NAT (STUN) port [RFC5389] IANA
3478,3479,3074,3075 udp applications Call of Duty - World at War Portforward
3478-3479,3658 udp applications PlayStation Network Portforward
3478,3479,3658 udp applications PS3 NAT Type 3 to 2
http://www.voip-info.org/wiki-STUN has some details.
If you have the CoD game, PS2/3 device, then this should be expected.
the comments re akamaitechnologies are correct and the Unix/Linux WHOIS sees
all of these IPs being associated with distributed akamaitechnologies servers --
even the ones in Japan.
YEP! Things are good -- perhaps set NO LOGGING to avoid the need for further analysis