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之前发过一个帖子有关Telus, Shaw 的比较, P( ]8 V9 J( S0 P1 T, 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? 8 k! \ r& X6 N) ?
! r7 i& K4 L1 K$ X3 QThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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TCP 21 (ftp)
! ~' C9 O) A+ S8 Q4 MCustomers 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)
( `3 A$ w: F% H9 `5 iCustomers 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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* h- h- s0 b: z' M, F; r4 fTCP 80 (www) d7 e% S! d A$ d3 k9 k2 r: `
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. |; a* F4 k+ d5 {0 Z7 E
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TCP 110 (pop3)( ?! n, y8 E! L6 h( ]1 p
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.( l* a8 ~5 i j2 ~* |
4 r% `8 L3 b( C' @ t! C: qTCP 6667 (ircd)8 g; y4 C4 E- i: S0 P! r! w
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.( f6 m* p0 @2 A2 y7 R: L8 a6 _
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TCP/UDP 135-139 (dcom and netbios)
: a+ Y+ B7 s9 k1 l, DThese ports are commonly exploited by worm viruses:
$ @# l( ]5 ]& G: `/ B) T135 Windows RPC
, @. @$ ?% @+ j' B% o9 S7 R136 PROFILE Naming System (basically unused)% d$ {7 v' V# A7 |% y# W b
137-139 Windows NetBios
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+ G9 r2 Z, b+ p) u$ E- O' gTCP/UDP 445 (ms-ds)
2 z2 } Z2 [, N% ]3 }Microsoft 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.2 A5 q6 J Z8 x
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TCP/UDP 1433-1434 (ms-sql)3 \ E4 y* h: D: A( W
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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