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之前发过一个帖子有关Telus, Shaw 的比较,
( z# i, H; |3 g7 J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:+ ~1 d( d, l' w7 A) D. D$ G( b0 g% \
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TCP 21 (ftp)# R2 O* e4 l# Z
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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- I. {! O% U9 t3 A3 L( sTCP 25 (smtp)0 N0 e0 Z+ o" s7 r9 q" g
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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: G+ v; t: T4 F; j( QTCP 80 (www)
" F H# g& e* K, b6 v# [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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* W0 C2 y$ z" m& D- LTCP 110 (pop3)
4 m2 X* |/ q9 [$ Q) ], I5 s. @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.; |" q" _( b3 i1 Y* `+ H
6 v8 w' ^; O( `! UTCP 6667 (ircd)
4 q/ t- r U2 t( m" \: n' SCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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i9 Z4 ]% _; zTCP/UDP 135-139 (dcom and netbios)
% Y1 }) u( f( v, ?# RThese ports are commonly exploited by worm viruses:
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136 PROFILE Naming System (basically unused)! k, ~+ B# r0 C5 ~" {- c# W8 B
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)8 C& B! @( @0 X5 I% H: q5 E1 O0 w
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)
' j' L6 n9 t3 o- X- {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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