我以前也問過這個問題。我已經設定了一個為我的網站、DNS 和一些遊戲伺服器提供服務的伺服器。但是，當我檢查路由器防火牆日誌時，我發現在同一連接埠上封鎖了許多傳入的 UDP 封包。看起來是這樣的，注意端口不正常，沒有打開或使用。
[INFO] Sat Aug 25 21:25:09 2012 Blocked incoming UDP packet from 176.212.55.166:49001 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:25:05 2012 Blocked incoming UDP packet from 186.227.20.17:21401 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:25:05 2012 Blocked incoming UDP packet from 117.203.8.239:14090 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:25:03 2012 Blocked incoming UDP packet from 77.35.1.215:49001 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:24:53 2012 Blocked incoming UDP packet from 90.180.165.121:10011 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:24:51 2012 Blocked incoming UDP packet from 190.51.167.28:22486 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:24:45 2012 Blocked incoming UDP packet from 159.224.93.23:25946 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:24:44 2012 Blocked incoming UDP packet from 176.212.55.166:49001 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:24:43 2012 Blocked incoming UDP packet from 62.63.214.200:62348 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:24:40 2012 Blocked incoming UDP packet from 43.244.112.201:45811 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:24:30 2012 Blocked incoming UDP packet from 78.8.169.255:1236 to 84.234.160.79:28018
[INFO] Sat Aug 25 21:24:30 2012 Blocked incoming UDP packet from 91.205.238.31:16672 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:24:29 2012 Blocked incoming UDP packet from 176.212.55.166:49001 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:24:19 2012 Blocked incoming UDP packet from 213.115.74.42:50839 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:24:13 2012 Blocked incoming UDP packet from 142.68.127.231:40886 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:24:09 2012 Blocked incoming UDP packet from 176.212.55.166:49001 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:59 2012 Blocked incoming UDP packet from 87.14.231.178:21360 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:56 2012 Blocked incoming UDP packet from 109.202.150.81:53385 to 84.234.160.79:28018
[INFO] Sat Aug 25 21:23:54 2012 Blocked incoming UDP packet from 83.183.5.227:53786 to 84.234.160.79:28015
[INFO] Sat Aug 25 21:23:53 2012 Blocked incoming UDP packet from 1.228.6.35:29826 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:23:49 2012 Blocked incoming UDP packet from 176.212.55.166:49001 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:42 2012 Blocked incoming UDP packet from 109.202.150.81:53371 to 84.234.160.79:28018
[INFO] Sat Aug 25 21:23:41 2012 Blocked incoming UDP packet from 84.90.108.176:49686 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:39 2012 Blocked incoming UDP packet from 186.178.118.94:10063 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:38 2012 Blocked incoming UDP packet from 217.122.204.212:41446 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:36 2012 Blocked incoming UDP packet from 82.33.127.120:18441 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:35 2012 Blocked incoming UDP packet from 81.19.46.234:1183 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:23:33 2012 Blocked incoming UDP packet from 94.69.159.219:63959 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:31 2012 Blocked incoming UDP packet from 83.68.239.193:21808 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:29 2012 Blocked incoming UDP packet from 176.212.55.166:49001 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:22 2012 Blocked incoming UDP packet from 109.202.150.81:53370 to 84.234.160.79:28018
[INFO] Sat Aug 25 21:23:21 2012 Blocked incoming UDP packet from 188.27.241.206:55403 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:20 2012 Blocked incoming UDP packet from 189.24.110.248:61712 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:23:13 2012 Blocked incoming UDP packet from 96.50.2.51:15432 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:09 2012 Blocked incoming UDP packet from 176.212.55.166:49001 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:23:03 2012 Blocked incoming UDP packet from 37.128.216.210:57785 to 84.234.160.79:28018
[INFO] Sat Aug 25 21:22:58 2012 Blocked incoming UDP packet from 115.37.98.215:24347 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:22:50 2012 Blocked incoming UDP packet from 23.24.147.209:28970 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:22:47 2012 Blocked incoming UDP packet from 86.11.74.217:45682 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:22:46 2012 Blocked incoming UDP packet from 201.249.81.218:42176 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:22:44 2012 Blocked incoming UDP packet from 176.212.55.166:49001 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:22:41 2012 Blocked incoming UDP packet from 78.36.218.169:25903 to 84.234.160.79:14953
[INFO] Sat Aug 25 21:22:24 2012 Blocked incoming UDP packet from 176.212.55.166:49001 to 84.234.160.79:61767
[INFO] Sat Aug 25 21:22:21 2012 Blocked incoming TCP packet from 86.100.65.148:58771 to 84.234.160.79:80 as RST:ACK received but there is no active connection
[INFO] Sat Aug 25 21:22:21 2012 Blocked incoming TCP packet from 86.100.65.148:58775 to 84.234.160.79:80 as RST:ACK received but there is no active connection
[INFO] Sat Aug 25 21:22:21 2012 Blocked incoming TCP packet from 86.100.65.148:58776 to 84.234.160.79:80 as RST:ACK received but there is no active connection
[INFO] Sat Aug 25 21:22:21 2012 Blocked incoming TCP packet from 86.100.65.148:58777 to 84.234.160.79:80 as RST:ACK received but there is no active connection
[INFO] Sat Aug 25 21:22:21 2012 Blocked incoming TCP packet from 86.100.65.148:58769 to 84.234.160.79:80 as RST:ACK received but there is no active connection
[INFO] Sat Aug 25 21:22:19 2012 Blocked incoming UDP packet from 201.80.163.51:40668 to 84.234.160.79:61767
請注意，被封鎖的常見連接埠是“61767”，他們開始使用“14953”。而且它不斷出現，日誌不只如此，那我該怎麼辦？服務開放的連接埠為1996：遠端桌面、143：imap、110：pop3、25：smtp、80：http、443：https、53：dns。對於遊戲伺服器 ort，我開啟了範圍 27000-27900，因為我在《軍團要塞 2》中使用 Srcds 伺服器。從昨天開始就一直這樣，為什麼呢？不知道。
捕獲一個 UDP 封包 @ UDP 61767
00000000 64 31 3A 61 64 32 3A 69 64 32 30 3A 77 97 D9 57 d1:ad2:i d20:w..W
00000010 FD 9B 37 AD 46 7A 55 32 C8 81 04 A7 36 D9 CE E1 ..7.FzU2 ....6...
00000020 36 3A 74 61 72 67 65 74 32 30 3A 77 9D 1A BA E9 6:target 20:w....
00000030 FF 51 96 85 6E 0A 7C A6 FA 59 C0 69 40 37 36 65 .Q..n.|. .Y.i@76e
00000040 31 3A 71 39 3A 66 69 6E 64 5F 6E 6F 64 65 31 3A 1:q9:fin d_node1:
00000050 74 34 3A F2 0A 00 00 31 3A 76 34 3A 55 54 40 76 t4:....1 :v4:UT@v
00000060 31 3A 79 31 3A 71 65 1:y1:qe
資料包2
00000000 64 31 3A 61 64 32 3A 69 64 32 30 3A A4 C6 64 B6 d1:ad2:i d20:..d.
00000010 60 41 16 2E 34 E3 71 0F 34 4B DE 45 DB 27 BE E4 `A..4.q. 4K.E.'..
00000020 39 3A 69 6E 66 6F 5F 68 61 73 68 32 30 3A 77 9D 9:info_h ash20:w.
00000030 1C A3 5B C9 67 67 97 1B 4D 4D D0 82 98 5F B8 6B ..[.gg.. MM..._.k
00000040 B2 7F 36 3A 6E 6F 73 65 65 64 69 31 65 36 3A 73 .6:nose edi1e6:s
00000050 63 72 61 70 65 69 31 65 34 3A 77 61 6E 74 6C 32 crapei1e 4:wantl2
00000060 3A 6E 34 32 3A 6E 36 65 65 31 3A 71 39 3A 67 65 :n42:n6e e1:q9:ge
00000070 74 5F 70 65 65 72 73 31 3A 74 32 3A D8 B2 31 3A t_peers1 :t2:..1:
00000080 76 34 3A 5A 6F 00 06 31 3A 79 31 3A 71 65 v4:Zo..1 :y1:qe
發佈於 02:24 am UTC + 01:00：看起來已經結束了，所以當它停止時就好了。
答案1
看起來像 BitTorrent 對等查詢流量。
系統可能已註冊到追蹤器 - BitTorrent 用戶端是否有可能在電腦上運行（或可能透過 NAT 運行在其後面）？
順便說一下，您的系統所要求的檔案的雜湊值位於第二個資料包中。我將把它作為練習留給讀者來查找它是什麼文件。