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之前发过一个帖子有关Telus, Shaw 的比较,
( y) a' A" E% f& Q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。" N3 A6 ^1 j5 {, [6 o! A
) b% X* M8 V9 X4 U6 ?) \9 _Does Telus block any ports? 5 P, v0 U+ l; c0 u5 W. i$ ^
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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TCP 21 (ftp)
1 D; s' I0 z2 ?4 ]& `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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TCP 25 (smtp)3 `# _+ ~6 `) e- B5 g
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.$ t4 O. h: ]2 r7 {5 q) [! {/ y
4 C/ x, d ^: sTCP 80 (www)
5 X! s! l) n% OCustomers 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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+ n0 j; W n- d6 a, @; {+ G7 dTCP 110 (pop3)
7 ^7 w% ?9 D/ b7 zCustomers 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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' d# D2 ~* ]: B7 i. }TCP 6667 (ircd). f( t; w5 [9 x, g1 Y+ W
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.& i! N% ~9 I- S- y
, L2 Y8 ]7 C% W0 O5 I" TTCP/UDP 135-139 (dcom and netbios)! ?' o: E5 V# s! S% N- X
These ports are commonly exploited by worm viruses:
3 g! V% ?( Y( W" b, Y135 Windows RPC8 Z! W# F: c: I' R) B/ g. R, T# ~
136 PROFILE Naming System (basically unused)4 T; k4 J1 ?; u9 @
137-139 Windows NetBios
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- A1 A& D1 c' }9 W- dTCP/UDP 445 (ms-ds)4 w6 | ]! W) V0 W: 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./ P- G7 a) ~5 v. h4 u
2 R+ x& E% V! E$ a9 ~TCP/UDP 1433-1434 (ms-sql)
$ V* N% ?3 L8 j% E; e* JMicrosoft 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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