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之前发过一个帖子有关Telus, Shaw 的比较, & ?0 \$ W* Z! g1 _4 ~- r& C
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。( V% q0 c: L# x0 K" d7 ~6 S; ?# V
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Does Telus block any ports? 4 R! n6 f3 f! P; c& F
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The only packages with no blocked ports at this time are the Server packages. 6 ~& t8 s7 E& V I3 \/ a Z' G& x0 J
5 K) F6 b8 Y5 }" \4 ]' d5 yThe Blocked ports currently are:
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* i% g: D6 Z6 y2 E7 k8 ]TCP 21 (ftp)
; U# X: c) u: {$ HCustomers 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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/ r3 x" n: S6 D% A+ X; Y& P! b5 q* rTCP 25 (smtp). O9 c- Q* b2 ~
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.) V2 i" Y; u1 c2 b4 U( z9 K5 H8 N
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TCP 80 (www)+ P8 Z7 d) C( J2 l9 j
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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TCP 110 (pop3)4 _! c; H4 H- r. o
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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TCP 6667 (ircd)0 w+ v- g6 X# l( U
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.0 b7 R8 E: }" K$ x" ?
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TCP/UDP 135-139 (dcom and netbios)
, c8 D. ~9 r+ U& p# |8 e2 dThese ports are commonly exploited by worm viruses:' ~' @+ l5 }4 l) ^
135 Windows RPC
$ S. T# x( t. ?6 V, n' z, d136 PROFILE Naming System (basically unused)8 R6 G6 q- F/ }( B% \7 X$ V% y
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
! \( d9 f! F2 p0 Z, [9 a* X# t1 uMicrosoft Directory Services - Customers that allow legitimate Internet users access to their computers will loose this ability. This allows hackers to directly connect to a Windows based computer and gain total control over the OS.
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" L8 c \) C( N I7 WTCP/UDP 1433-1434 (ms-sql)
0 x/ V' V9 a- U: SMicrosoft 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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