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之前发过一个帖子有关Telus, Shaw 的比较，
/ T8 p% i0 y2 n! A5 E4 a& v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。( }5 ^6 A6 |5 B- F
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Does Telus block any ports? 1 r+ ^1 ?6 O/ E
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The only packages with no blocked ports at this time are the Server packages. 7 y6 @7 P( z) G6 K \0 v3 Y
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The Blocked ports currently are:
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5 _/ z/ ^0 l; l, ?% lTCP 21 (ftp)
$ ^% h! k4 r6 X$ L2 ]+ u$ QCustomers 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.& E( k( E2 f+ I6 I9 s# _
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TCP 25 (smtp)3 L- g9 s4 w- [5 l; [* n( U
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.* r2 z. O( M) x* p
' S O: @% C( A# S/ s: z9 r5 cTCP 80 (www)
4 G, [, D' r1 B% a' XCustomers 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.+ Y" g3 @+ y/ J5 T4 @
+ N; k7 Z( \! w X8 l& {$ f/ h* tTCP 110 (pop3)
- G9 V y" t% j$ w/ I* Q3 k0 NCustomers 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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: }! U8 Y3 o9 l+ I" ^$ ]4 ^" S0 NTCP 6667 (ircd)8 l6 D2 c2 |! _, O. t7 Q0 @/ 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)( u! s }9 n) K: t; }9 I
These ports are commonly exploited by worm viruses:4 b+ h) m' Z* W8 o& t; `( C
135 Windows RPC4 ~9 Y+ z. Y9 e2 n) G
136 PROFILE Naming System (basically unused)' v+ N& x5 w& _+ g) X: \
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
+ \) U# b4 a8 c L! W' O4 vMicrosoft 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.) [- ]7 ^! z: \0 Z; x C4 N6 J/ J0 z& V
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TCP/UDP 1433-1434 (ms-sql)
& L& I, R/ d& n$ U& C4 @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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发表于 2009-11-7 17:58
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