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之前发过一个帖子有关Telus, Shaw 的比较,
! k: i2 P. W. \8 R% M( a- t( A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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The only packages with no blocked ports at this time are the Server packages.
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8 u$ {0 T6 `9 h1 w- LThe Blocked ports currently are:+ _2 M0 C2 r& h- p' Y' K+ S! L
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TCP 21 (ftp)
% Q; ]/ i* `/ n# P+ x3 yCustomers 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.) O: _+ V- |. X( E
c9 Q+ B* M2 k0 GTCP 25 (smtp)
- n- O' w* l( pCustomers 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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1 _5 s9 w0 i& V( `! g' Q' uTCP 80 (www)! A3 t3 w* {, |2 t* m
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.* [2 P, F Y! s5 n! t
2 g5 |6 ]$ s% j3 _TCP 110 (pop3)/ R6 B% R) g7 r0 ~
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.
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+ l3 I. _* _* ^" s D9 ~7 q& jTCP 6667 (ircd)- H; F$ w; H I/ [2 V% ?/ w0 ?
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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9 ` B! w1 f M2 `7 h: LTCP/UDP 135-139 (dcom and netbios)
- R/ m1 _ b# H* DThese ports are commonly exploited by worm viruses:
' Q5 w4 ?# V3 D' P135 Windows RPC' t7 [ K* T0 d5 a0 ]1 r/ X
136 PROFILE Naming System (basically unused)
\2 B/ N" D8 P# Q* s4 q3 f137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
1 r! N! b9 p0 \9 DMicrosoft 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.5 a p# {3 @( O( J2 @* D( ]
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TCP/UDP 1433-1434 (ms-sql)
* ]2 T- d4 L* mMicrosoft 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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