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之前发过一个帖子有关Telus, Shaw 的比较, % l+ P( C( g0 A3 ?( A8 r
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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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:+ U( K. Y7 u( Z% a1 ~ z
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TCP 21 (ftp)/ z, Z) y- n8 v. j; g$ h' ~$ ?( V
Customers 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)
) J3 D" f6 @ e+ O. [1 C. vCustomers 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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3 Z, {! s' ^. }( N9 ~: b0 OTCP 80 (www)& S7 S2 W. ~3 T C
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.
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TCP 110 (pop3)' p+ R* E. w) y, k# o8 F0 d1 M% {0 A
Customers 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.
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TCP 6667 (ircd)
. @6 I) I A. f X6 `Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.. y' o* y0 I- O; ~5 s* T. n% M
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TCP/UDP 135-139 (dcom and netbios)
7 r8 @8 \: [# dThese ports are commonly exploited by worm viruses:" O& ~' E0 z l' M4 z. v0 c
135 Windows RPC, ~. b1 `$ M" g% C
136 PROFILE Naming System (basically unused)) L; y! i# m8 u' K# b
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
3 m% \6 g, i7 nMicrosoft 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.6 X: J, t; i# a1 T7 ]% j! @
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TCP/UDP 1433-1434 (ms-sql)
0 g, U) U7 }' x3 y" ]. J$ F9 [" R5 yMicrosoft 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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