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之前发过一个帖子有关Telus, Shaw 的比较,
( X- L! Z. 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。
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Does Telus block any ports? 4 @6 E7 W1 S; a1 j* i+ o
. S0 d j; o+ L1 o" L$ b# _The only packages with no blocked ports at this time are the Server packages. ' g. `) j% _0 ?1 e0 s" n/ u1 |5 ~
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The Blocked ports currently are:7 f4 k; Q) Q7 Y
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TCP 21 (ftp); ^0 E: v2 ?) {4 D9 P1 S1 J
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./ g& I5 H! g2 t8 z- r( D
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TCP 25 (smtp)( i9 [; m8 T' r7 \; F; K/ x6 u" p
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)" w& z4 {! t l1 i. d8 l
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)
( B; N+ }# J& DCustomers 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)* N9 z0 s0 k0 V; 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)
5 F0 }' [2 v9 J2 t2 ~1 }These ports are commonly exploited by worm viruses:, A. c6 u" _5 B2 d2 ]. t8 _5 b( o
135 Windows RPC
0 L6 o$ T' c# a. Q# g( x& S136 PROFILE Naming System (basically unused)
3 D4 W+ p( L; N) s137-139 Windows NetBios3 D8 I* }( _+ C
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TCP/UDP 445 (ms-ds)
, J, X& z, Y1 O# bMicrosoft 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.$ O7 I! u: ]5 p- J* \
. _% L3 l$ b% S" I+ MTCP/UDP 1433-1434 (ms-sql)
; ]+ p: K% K* [# T1 V% n/ y7 LMicrosoft 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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