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之前发过一个帖子有关Telus, Shaw 的比较,
- U( D$ X+ h% `2 P9 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。8 _4 B m( e. E4 d; i: l4 a
; {0 p7 g& Z7 z9 c C9 R! S. |Does Telus block any ports? 6 D! Y( U: E# }! t
+ R3 l1 r/ k6 p" QThe only packages with no blocked ports at this time are the Server packages. % r O! v- p' K' j1 A& @- T( b5 q, z
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The Blocked ports currently are:2 o# _5 j5 ~2 k
4 g. ~0 c, Q2 E1 j8 A1 sTCP 21 (ftp)+ ~4 h1 r9 b% L: O. Q2 \( W7 `0 d
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): r8 \0 x9 D! _" h7 i
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.
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TCP 80 (www)/ l/ R$ x5 B8 _$ ]. {7 V, I
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./ w* f9 w9 G7 `
! g" w/ c, g7 J, uTCP 110 (pop3)
) ?6 `9 I" R1 ]- {- _- ?! F3 YCustomers 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)
5 S0 q$ u4 |- C7 R8 P# PCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.! d. R* u2 n) }
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TCP/UDP 135-139 (dcom and netbios)
) @8 A$ w' L# UThese ports are commonly exploited by worm viruses:
( T. e# @: P/ o9 i, s135 Windows RPC5 ~2 i% @% v( _1 ?$ a. F `
136 PROFILE Naming System (basically unused)
5 w9 Q1 F4 V1 E137-139 Windows NetBios6 A, `0 B7 b" F) a. n4 M0 f
% D- Z0 i3 n( g; j; XTCP/UDP 445 (ms-ds)
) R: u4 C8 W/ [! v+ A4 GMicrosoft 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.! n: a/ G$ s5 o$ @4 g x. T% x0 U
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TCP/UDP 1433-1434 (ms-sql)
: G7 w4 J5 S! o" M& rMicrosoft 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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