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之前发过一个帖子有关Telus, Shaw 的比较， 0 A0 P3 C; H2 Q9 I, X! g. A9 ]# y% n
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 G3 @/ n. D+ w% V- J4 |
: Q$ i' k F: G. d; S7 p2 CDoes Telus block any ports? ; w! W* B2 z, {7 K- p; E8 Q
5 X# Y( L: U, s$ x8 ]8 JThe only packages with no blocked ports at this time are the Server packages. 7 P1 e3 b3 I; {/ e' s u2 \& l. V5 {
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The Blocked ports currently are:) X; \ k# n; O7 M$ }* C
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TCP 21 (ftp)
; I5 Y( }9 O8 W3 i$ R. f% zCustomers 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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6 _# f5 _8 s7 m! tTCP 25 (smtp)5 h( e o3 V+ {' F- h
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)
& O+ ^' e0 @1 Y, g) DCustomers 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." _3 _% A- z8 O! p! a
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TCP 110 (pop3)$ \5 A6 C2 H3 ~1 h1 ~3 `. E
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.* s$ u4 J' a2 \* Z2 R9 f& I
. C) S. u3 G, }5 f4 P( w7 hTCP 6667 (ircd)) M+ C6 F$ h8 K7 A
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)" V' u% q/ Z5 e, s' M
These ports are commonly exploited by worm viruses:
: t3 m7 H; r0 H. M9 F135 Windows RPC
! [7 D" m) B) l136 PROFILE Naming System (basically unused)
% t( m+ }" O, C" K137-139 Windows NetBios
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Q4 u* J9 p1 I- a6 eTCP/UDP 445 (ms-ds)$ N' d0 M( h( S) G6 Z- a$ s
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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. h. b$ o' s& b( B0 zTCP/UDP 1433-1434 (ms-sql)
- ]5 T2 @% E5 Y# tMicrosoft 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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