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之前发过一个帖子有关Telus, Shaw 的比较,
+ j1 m% N* l: R+ ~* [, G6 I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- |; H1 l- _. x
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Does Telus block any ports?
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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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$ ]; H7 t9 J* A: ]# c1 ?! `& _& t# yTCP 21 (ftp)
: G6 P4 F! q/ }( Q& 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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1 T5 p9 |/ L: VTCP 25 (smtp); y0 @2 E" N) Y6 u- S N4 Y8 d- a
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., c$ f2 M& z6 S- t- L8 b# z
( e8 I9 c& g! PTCP 80 (www)& f! B! W* o+ G# {2 y0 q/ U2 B
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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( a& Q9 N0 b' L: \1 g/ y! @+ a" ]TCP 110 (pop3)
+ a0 y% K+ T7 |* @; NCustomers 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.4 |! F( y1 F% {/ B2 j" z
5 g/ F% p8 }2 y: P! }0 N2 sTCP 6667 (ircd)
5 N1 a0 d4 U# D0 _# i; g' YCustomers 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)
3 u' k; T/ F5 v X7 @6 n3 o* YThese ports are commonly exploited by worm viruses:& f( Y1 c, B% P. s
135 Windows RPC
( i2 f! ]+ q0 t% y136 PROFILE Naming System (basically unused)
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TCP/UDP 445 (ms-ds)
4 s9 \$ H: D: Z6 |1 l8 }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.- E4 h8 ~% A0 p! L; p$ H/ E! ~
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TCP/UDP 1433-1434 (ms-sql)
: D/ T: P$ p2 y/ D3 c4 F5 L0 wMicrosoft 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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