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之前发过一个帖子有关Telus, Shaw 的比较, 8 x5 J8 C2 D( ^- Q& `0 q
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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" r8 Q# x! q7 @3 b% @7 W3 o, KThe 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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+ A1 z) U3 Z# R$ n$ K5 s) w! [, E# mTCP 21 (ftp)
! s2 {' N& W) I2 dCustomers 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)- a/ F; {+ a$ y; z% w
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); g% _. e3 A! O4 g
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); O3 g$ A* u' O0 o
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. m# N* q6 g- Y3 G% B, E% m* s/ @- r
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TCP 6667 (ircd)
! m; X3 M+ k( q5 M) QCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.+ Y: i/ T; w; }
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TCP/UDP 135-139 (dcom and netbios)
}; M& m: t& S4 E% T* jThese ports are commonly exploited by worm viruses:% e& L3 O' S' }' h
135 Windows RPC/ [: p O% R( ?! A, ]7 B
136 PROFILE Naming System (basically unused)) G! _! f* R( X/ B+ ]; W
137-139 Windows NetBios
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c3 H) p, {' m, a0 FTCP/UDP 445 (ms-ds)' l5 o9 d. p' O2 Q$ i) d
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)
1 q2 f! N L% |6 r8 ]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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