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之前发过一个帖子有关Telus, Shaw 的比较,
5 t% ~8 r' n0 G; R1 X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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0 E: A+ ?3 L3 \0 @. _4 S( vDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. 2 N0 }" e% u2 o+ k/ ~
/ R _' L u# N; eThe Blocked ports currently are:* O; Q$ q7 k" J _9 ]6 K
5 |* b; f4 M' GTCP 21 (ftp)( y+ n5 Q; p# h; g& 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.
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, ]6 S3 d. d7 b% {0 b0 U% q' @TCP 25 (smtp)
& E I# g0 s9 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.2 U7 \5 A& L: {( D
/ r2 R; U7 h$ LTCP 80 (www)# h+ B) p. f T4 u4 g
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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7 b7 i' f6 r1 q3 d3 bTCP 110 (pop3)7 K/ T- f0 }- U, M
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.1 l, l& ]: t( x
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TCP 6667 (ircd)% ~- D* n/ {1 J$ b+ v) Z
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)! Q( d9 D w: H3 P
These ports are commonly exploited by worm viruses:
3 v( t0 s- M) p* j0 H( u135 Windows RPC% D' m3 k0 y D+ J" u
136 PROFILE Naming System (basically unused)
* y1 a+ m# b& }% P; V9 I: R! \137-139 Windows NetBios
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TCP/UDP 445 (ms-ds). R+ x1 A4 i5 T' S6 _
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., Y5 x9 O' V4 @, Y7 b
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TCP/UDP 1433-1434 (ms-sql)
% n1 m! w. b, w: L' h+ aMicrosoft 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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