了解奇怪的IP地址239.255.255.250打賞

今天在打開c:\windows\pfirewall.log文件時,發現很多這樣的行,如下:
2011-04-20 08:37:43 DROP UDP 192.168.1.212
239.255.255.250 1042 1900 161 - - - - - - - RECEIVE
2011-04-20 08:37:46 DROP
UDP 192.168.1.212 239.255.255.250 1042 1900 161 - - - - - - -
RECEIVE
2011-04-20 08:37:49 DROP UDP 192.168.1.212 239.255.255.250 1042 1900
161 - - - - - - - RECEIVE
2011-04-20 08:41:20 DROP UDP 192.168.1.50
239.255.255.250 1048 1900 160 - - - - - - - RECEIVE
2011-04-20 08:41:20 DROP
UDP 192.168.1.50 239.255.255.250 1048 1900 160 - - - - - - -
RECEIVE
2011-04-20 08:41:20 DROP UDP 192.168.1.50 239.255.255.250 1048 1900
160 - - - - - - - RECEIVE
2011-04-20 08:41:20 DROP UDP 192.168.1.50
239.255.255.250 1048 1900 160 - - - - - - - RECEIVE
2011-04-20 08:41:20 DROP
UDP 192.168.1.50 239.255.255.250 1048 1900 160 - - - - - - -
RECEIVE
2011-04-20 08:41:20 DROP UDP 192.168.1.50 239.255.255.250 1048 1900
161 - - - - - - - RECEIVE
2011-04-20 08:41:20 DROP UDP 192.168.1.50
239.255.255.250 1048 1900 161 - - - - - - - RECEIVE
2011-04-20 08:41:20 DROP
UDP 192.168.1.50 239.255.255.250 1048 1900 161 - - - - - - -
RECEIVE
2011-04-20 08:41:20 DROP UDP 192.168.1.50 239.255.255.250 1048 1900
161 - - - - - - - RECEIVE
2011-04-20 08:41:20 DROP UDP 192.168.1.50
239.255.255.250 1048 1900 161 - - - - - - - RECEIVE
2011-04-20 08:42:37 DROP
UDP 192.168.1.189 239.255.255.250 1037 1900 161 - - - - - - -
RECEIVE
2011-04-20 08:42:34 DROP UDP 192.168.1.189 239.255.255.250 1037 1900
161 - - - - - - - RECEIVE
2011-04-20 08:42:40 DROP UDP 192.168.1.189
239.255.255.250 1037 1900 161 - - - - - - - RECEIVE
2011-04-20 08:42:53 DROP
UDP 192.168.1.189 239.255.255.250 1050 1900 160 - - - - - - -
RECEIVE
2011-04-20 08:42:54 DROP UDP 192.168.1.189 239.255.255.250 1050 1900
161 - - - - - - - RECEIVE
2011-04-20 08:42:54 DROP UDP 192.168.1.189
239.255.255.250 1050 1900 165 - - - - - - - RECEIVE
2011-04-20 08:42:56 DROP
UDP 192.168.1.189 239.255.255.250 1050 1900 161 - - - - - - -
RECEIVE
2011-04-20 08:42:56 DROP UDP 192.168.1.189 239.255.255.250 1050 1900
165 - - - - - - - RECEIVE
2011-04-20 08:42:53 DROP UDP 192.168.1.189
239.255.255.250 1050 1900 161 - - - - - - - RECEIVE
2011-04-20 08:42:53 DROP
UDP 192.168.1.189 239.255.255.250 1050 1900 165 - - - - - - -
RECEIVE
2011-04-20 08:42:54 DROP UDP 192.168.1.189 239.255.255.250 1050 1900
160 - - - - - - - RECEIVE
2011-04-20 08:42:56 DROP UDP 192.168.1.189
239.255.255.250 1050 1900 160 - - - - - - - RECEIVE
2011-04-20 08:42:57 DROP
UDP 192.168.1.189 239.255.255.250 1050 1900 160 - - - - - - -
RECEIVE
2011-04-20 08:42:59 DROP UDP 192.168.1.189 239.255.255.250 1050 1900
160 - - - - - - - RECEIVE
2011-04-20 08:43:00 DROP UDP 192.168.1.189
239.255.255.250 1050 1900 161 - - - - - - - RECEIVE
2011-04-20 08:43:00 DROP
UDP 192.168.1.189 239.255.255.250 1050 1900 165 - - - - - - -
RECEIVE
2011-04-20 08:43:02 DROP UDP 192.168.1.189 239.255.255.250 1050 1900
161 - - - - - - - RECEIVE
2011-04-20 08:43:02 DROP UDP 192.168.1.189
239.255.255.250 1050 1900 165 - - - - - - - RECEIVE
2011-04-20 08:43:04 DROP
UDP 192.168.1.189 239.255.255.250 1050 1900 160 - - - - - - -
RECEIVE
2011-04-20 08:43:05 DROP UDP 192.168.1.189 239.255.255.250 1050 1900
160 - - - - - - - RECEIVE

www.ip138.com上查了一下239.255.255.250這個IP地址,顯示:IANA保留地址用于多點傳送,即是一個組播地址(單播、廣播、組播微軟介紹:http://www.microsoft.com/windows/windowsmedia/cn/serve/multiwp.aspx)。
對IANA不解,用Google搜索了一番,得到如下資料:

IANA (Internet Assigned Numbers Authority)
,Internet號分配機構。負責對IP地址分配規劃以及對TCP/UDP公共服務的端口定義。國際互聯網代理成員管理局(IANA)是在國際互聯網中使用的IP
地址、域名和許多其它參數的管理機構。IP地址、自治系統成員以及許多頂級和二級域名分配的日常職責由國際互聯網注冊中心(IR)和地區注冊中心承擔。
在IP地址范圍內,非路由地址IANA(InternetAssignedNumbersAuthority)將一部分地址保留作為私人IP地址空間,專門用于內部局域網使用,這些地址如下表:
類IP地址范圍網絡數
A
10.0.0.0---10.255.255.2551
B 172.16.0.0---172.31.255.25516
C
192.168.0.0---192.168.255.255255
這些地址是不會被Internet分配的,因此它們在Internet上也從來不會被路由,雖然它們不能直接和Internet網連接,但仍舊可以被用來和Internet通訊,我們可以根據需要來選用適當的地址類,在內部局域網中大膽地將這些地址當作公用IP地址一樣地使用。在Internet上,那些不需要與Internet通訊的設備,如打印機、可管理集線器等也可以使用這些地址,以節省IP地址資源。

了解奇怪的IP地址239.255.255.250
文章《了解奇怪的IP地址239.255.255.250》二維碼
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已有2條評論

  1. 鬼娃娃

    這個是組播地址,其實都會存在,某些軟件會發送好像

    2012-08-23 13:38 回復

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