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之前发过一个帖子有关Telus, Shaw 的比较,
) Y' x1 U8 E2 m7 [- `) s4 t5 U* r5 P( R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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$ Q) |1 c4 i( G) b6 [5 pDoes Telus block any ports?
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6 V6 k+ w, g0 D9 p9 g. d+ K( K& t9 yThe only packages with no blocked ports at this time are the Server packages. - x4 ^7 p( e; L' _' s
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The Blocked ports currently are:6 M' l' R& b" l( y5 s' `9 P
% N! P* w0 y& u' A9 p* x Z# u, aTCP 21 (ftp)5 u( l: @: Z- v: F
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.2 b* R m2 ]) o# @6 x- w
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TCP 25 (smtp)( C2 q) w) l6 B6 S
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. |$ I) ?2 `& J
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TCP 80 (www)6 S7 z& _6 R& K- s. u
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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" w0 G+ O) D k: |' ATCP 110 (pop3)7 a: d9 K7 O4 K% M6 R: C
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.- C4 Z# D# Z& @0 o/ r2 {( b
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TCP 6667 (ircd)- m$ d- f& Z& e3 T( @6 Q p4 I
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.7 }6 p q* A* N( F! d; K
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TCP/UDP 135-139 (dcom and netbios)2 q' Z5 m: V. w7 Q
These ports are commonly exploited by worm viruses:" F# F% F( ^5 e( T
135 Windows RPC& ? W$ i- a; c$ r) b6 F1 D" {0 f7 ~3 H
136 PROFILE Naming System (basically unused)( A7 Y" S/ Q, ^7 C
137-139 Windows NetBios( b4 }/ t& z- T/ s0 m7 ^
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TCP/UDP 445 (ms-ds)( ~ y& N% R3 \3 M8 j: M" q# ^0 v2 O, b% L
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.
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TCP/UDP 1433-1434 (ms-sql)
, r' [" O; h( E7 h+ m' V1 bMicrosoft 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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