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之前发过一个帖子有关Telus, Shaw 的比较， - p g7 X0 I) @# q$ C
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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' @' Y& r- u2 ?: Z& f! @* P; aThe 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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! K" N+ g, g4 pTCP 21 (ftp); q$ d0 x1 H: ^) H# h, d
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)
$ d: W$ G: ] ]6 M8 Q; ]& Z }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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TCP 80 (www)# A" x- j$ K5 N' y3 p! f
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.- O6 u" l9 O! t _3 i
! l. {3 j7 k& J1 H# B2 D$ sTCP 110 (pop3)
$ X3 |0 b; I. K3 _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)) m; h3 Z; I5 n. T! |/ M: I5 K: A) E
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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TCP/UDP 135-139 (dcom and netbios)
3 m7 v$ ]$ z) Z3 ?These ports are commonly exploited by worm viruses:
, ]) P* F3 {1 A- T& c, y$ \135 Windows RPC
! N! Q! t% ^! |/ Z% v8 B136 PROFILE Naming System (basically unused)
1 H3 E5 Z0 y8 N6 h+ T. E! ~137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)/ i t2 f. f) B0 V# _; m% a
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., n5 _9 Z! L/ F
- I9 y3 y7 Y6 D0 ?TCP/UDP 1433-1434 (ms-sql)
, i' j7 ^* ~& H7 M4 FMicrosoft 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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发表于 2009-11-7 17:58
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