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之前发过一个帖子有关Telus, Shaw 的比较,
- {/ ~! J- V. N% \4 d' ~4 ?# b3 v& Y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? 1 i! y+ w, [# @* ]' U& b
; R7 [* U! j. ZThe only packages with no blocked ports at this time are the Server packages. " F2 {" y$ i5 k) d7 ~
* K- \: `( n5 v( N5 YThe Blocked ports currently are:$ l& g' ?* ]6 T! Z& U% D
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TCP 21 (ftp)) x3 f/ d$ Y5 N; @: R" w
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.: {7 [0 T7 t5 U7 j* K' c1 c g
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TCP 25 (smtp)
4 m+ S' j1 _' ZCustomers 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)
# ^ R+ \! l4 h/ ?7 k- lCustomers 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)
+ P# J9 a* i: HCustomers 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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4 n3 r( |0 B* R* I2 Q3 N& PTCP 6667 (ircd)3 Y$ T0 {! u1 s* V
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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* t! h- n2 K q8 \% ZTCP/UDP 135-139 (dcom and netbios)
% e+ N7 G2 Y8 |8 p$ }8 jThese ports are commonly exploited by worm viruses:" d9 ?+ M; v2 w- J5 g" g
135 Windows RPC
1 A0 M- ^* M; r+ X) ~% X) \* k136 PROFILE Naming System (basically unused)
) B5 g# C/ ~: M6 S; j: a5 r137-139 Windows NetBios
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/ u; U: o$ G3 {' TTCP/UDP 445 (ms-ds)
7 L8 f4 u; H9 B) d) @- P- AMicrosoft 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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7 S" b3 b& S1 G1 z( Y2 XTCP/UDP 1433-1434 (ms-sql)
( _2 p( r- _ t# R' ~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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