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之前发过一个帖子有关Telus, Shaw 的比较, 0 |1 X# w" G' v, h8 D
家用Telus 已经封锁了不少端口。 也随时不通知下说锁就锁, 非常讨厌。
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Does Telus block any ports?
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% {( D) \) u% LThe only packages with no blocked ports at this time are the Server packages. 1 `- l4 `2 J9 S! u3 F" @
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The Blocked ports currently are:
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TCP 21 (ftp)
4 h, e4 Y; P7 @) zCustomers running an FTP server will no longer be able to have Internet users connect to their server. Many customers computers are used as FTP servers to store illegal files.
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TCP 25 (smtp)# x3 U3 V% k1 j7 v, h( v5 K5 P! Q
Customers running a SMTP mail server will no longer be able to receive email requests. Also, Telus users will not be able to connect to non-Telus smtp servers on port 25. Prevent mail servers that operate as an open relay. Open relays are used without a customer?s knowledge to sends millions of pieces of Spam.
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5 [0 d9 C7 A+ T. ]" @+ R4 |" `TCP 80 (www)# e# M5 n# o) H7 R& x5 X
Customers running a Web server will no longer be able to have Internet users connect to their server. Common exploit on old Window IIS server and Linux boxes that are not properly patched.6 T& m% l4 [5 s5 t
3 X, e/ \$ F* W( YTCP 110 (pop3)
+ J6 @3 C) W) Z; P2 Q' cCustomers running a POP mail server will no longer be able to have Internet users connect to the server. Prevent mail servers that operate as an open relay. Open relays are used without a customer?s knowledge to sends millions of pieces of Spam.$ o6 e) e) |9 E7 P9 U
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TCP 6667 (ircd)
, j- Q# Q& D( _, E3 J1 R/ mCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.# ` n& C. s) h0 F
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TCP/UDP 135-139 (dcom and netbios)
) f; v! v0 E7 X6 b: UThese ports are commonly exploited by worm viruses: o- ~, Y6 E( g/ [ D/ P( W. a
135 Windows RPC
3 H; E b1 {; K* U' x136 PROFILE Naming System (basically unused)
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TCP/UDP 445 (ms-ds)
; w# P$ o! R. G5 } YMicrosoft Directory Services - Customers that allow legitimate Internet users access to their computers will loose this ability. This allows hackers to directly connect to a Windows based computer and gain total control over the OS.$ x( ^9 K% X9 n
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TCP/UDP 1433-1434 (ms-sql)! c6 ^: j E5 s* c
Microsoft SQL server - Customer running an SQL server will no long be able to have Internet user connect to their server. There are several worm viruses that exploit holes in SQL server. |
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