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之前发过一个帖子有关Telus, Shaw 的比较,
# V6 ?; ?% G. e( k" P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? ; g/ ^9 ?. M7 W& S; G" }6 A
' |/ k( x/ j+ b _' mThe only packages with no blocked ports at this time are the Server packages. 1 j7 _3 n( t, j; h1 L9 a& O
" G. x$ N: F' R C, j Q/ f& nThe Blocked ports currently are:# l1 P$ C+ {8 w. {1 G2 }7 p
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TCP 21 (ftp)
f2 k! Y( A& m/ xCustomers 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./ ? K' k. D! ^# @
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TCP 25 (smtp)4 ], R0 k1 |3 P% l% {
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.: U: ~; n6 r" ^% u7 M. m
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TCP 80 (www)
1 }% t1 `' C# v: GCustomers 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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' a+ Z+ C; l9 W5 [8 c% s, TTCP 110 (pop3)
% q7 Q+ b2 R& q; gCustomers 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.% h/ n% @ e& C4 [7 d2 N |. t; }4 H
2 }% T7 i3 m4 k% NTCP 6667 (ircd)
: ?3 c. \3 b! C; ~( P! S- RCustomers 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)
* _( L1 r, Q* U; P. B0 yThese ports are commonly exploited by worm viruses:4 t' O% W8 R& ]; z
135 Windows RPC5 \9 @9 n( C- I
136 PROFILE Naming System (basically unused)
; ~: G" E* d/ S( d: h7 o137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
+ v$ R' ?) T; l/ ~9 |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.% s& M4 v" F! [
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TCP/UDP 1433-1434 (ms-sql)
N, M( x1 [9 B V& ZMicrosoft 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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