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之前发过一个帖子有关Telus, Shaw 的比较, , g' x7 ?: \. x6 x# d3 y
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? 0 u/ @: f$ W0 T0 j; \$ J
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The only packages with no blocked ports at this time are the Server packages. 0 {% a' V' O1 U: {& y
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The Blocked ports currently are:
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7 v. q4 B: R J `% m1 y% v* tTCP 21 (ftp)
9 N( B6 T. H% V3 g% _* tCustomers 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.. ~6 G6 N" H, `7 P! v
- C( T* b- Q' L) [" J- V, \TCP 25 (smtp)
2 k2 m5 V3 l/ T1 T$ \. cCustomers 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.# r- N! T# a: `1 d! k; h
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TCP 80 (www)4 z# @1 d- N4 T
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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5 e9 h1 R/ O5 g. M6 ?0 W0 t3 LTCP 110 (pop3)
+ H1 f& R( y- f" e5 ICustomers 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)
7 H0 q8 q# M) ^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)
& l% i8 ~( o5 }% N, o/ wThese ports are commonly exploited by worm viruses:) z0 G9 L: q c. b" M& Z
135 Windows RPC
) p7 b0 G( I# d, Q; `8 m% H136 PROFILE Naming System (basically unused)
& @9 ]9 N. L( e% \% V. Z! ~137-139 Windows NetBios: N5 } D3 b# E7 p1 J! F- {6 M' {
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TCP/UDP 445 (ms-ds): D2 z& \1 Y# F4 I
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.
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TCP/UDP 1433-1434 (ms-sql)" k' `' Q. v& ^4 @* P5 k' I
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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