来自QNAP NAS的连续出站连接

Question

我在防火墙上注意到，我的QNAP NAS正在不断地将UDP会话发送到Internet。每一秒，我就有5-7个连接到地址，如下所示：

2013-11-10 23:17:54 Deny 192.168.60.5 93.215.212.162 6881/udp 6881 6881  
2013-11-10 23:18:05 Deny 192.168.60.5 87.76.0.83 29872/udp 6881 29872  
2013-11-10 23:18:05 Deny 192.168.60.5 5.164.188.224 6881/udp 6881 6881  
2013-11-10 23:18:05 Deny 192.168.60.5 80.61.45.206 6881/udp 6881 6881  
2013-11-10 23:18:34 Deny 192.168.60.5 37.117.204.129 6881/udp 6881 6881  
2013-11-10 23:18:34 Deny 192.168.60.5 71.67.101.30 51413/udp 6881 51413  
2013-11-10 23:18:34 Deny 192.168.60.5 89.28.92.191 8621/udp 6881 8621  
2013-11-10 23:18:34 Deny 192.168.60.5 94.244.157.85 28221/udp 6881 28221  
2013-11-10 23:18:34 Deny 192.168.60.5 213.241.61.240 9089/udp 6881 9089  
2013-11-10 23:18:45 Deny 192.168.60.5 88.163.28.100 52721/udp 6881 52721  
2013-11-10 23:18:45 Deny 192.168.60.5 37.55.190.20 10027/udp 6881 10027  
2013-11-10 23:18:45 Deny 192.168.60.5 62.72.188.146 14306/udp 6881 14306  
2013-11-10 23:19:14 Deny 192.168.60.5 85.53.244.205 51413/udp 6881 51413  
2013-11-10 23:19:14 Deny 192.168.60.5 67.163.18.215 52130/udp 6881 52130  
2013-11-10 23:19:14 Deny 192.168.60.5 86.172.105.140 9089/udp 6881 9089  
2013-11-10 23:19:14 Deny 192.168.60.5 99.28.56.121 52383/udp 6881 52383  
2013-11-10 23:19:14 Deny 192.168.60.5 109.60.184.249 46217/udp 6881 46217  
2013-11-10 23:19:25 Deny 192.168.60.5 121.107.144.174 21135/udp 6881 21135  
2013-11-10 23:19:25 Deny 192.168.60.5 84.39.116.180 48446/udp 6881 48446  
2013-11-10 23:19:25 Deny 192.168.60.5 183.238.254.62 openvpn/udp 6881 1194   

这是可怕的，因为它似乎是被黑客攻击发送信息。有没有人从他们的QNAP NAS中观察到这种行为？

Answer 1

这是bittorrent流量。更具体地说，它是由分布式散列表(DHT)协议引起的流量。在QNAP论坛上甚至有一条关于它的帖子