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之前发过一个帖子有关Telus, Shaw 的比较, 2 @0 @+ B- P$ k$ B
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。2 ~% x& L; z* f" Z6 t2 a. q/ ^
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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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; P' r9 c9 b4 d9 r1 GThe Blocked ports currently are:
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+ {' e! Q- H6 c4 U4 |4 lTCP 21 (ftp)
( H$ c) o* k* ~1 @2 p& m$ MCustomers 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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( c# T. k8 x3 H: v6 L yTCP 25 (smtp): l* Q. Z( S+ m! h) d/ Z8 C
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.1 r% l+ ]" f$ S, P& E5 x
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TCP 80 (www)
5 Q+ l3 a+ p3 ?/ a8 j/ }; X& M. c" ~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.1 A# R; M4 p: _
$ \" B. a& j7 u* }# d( l9 c* w# uTCP 110 (pop3)4 E( |6 G) Z. K3 q, U
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.7 ^6 P0 L* T, C, I: ^
( q4 K3 G8 t$ UTCP 6667 (ircd)
" {3 W% f; i4 {; P! F& {Customers 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)! \( S; X, a9 u& m V
These ports are commonly exploited by worm viruses:) w& T& b/ q$ b9 v# h
135 Windows RPC
6 S+ K6 ^! r- H4 Q# G8 x136 PROFILE Naming System (basically unused)
& E% Q( l9 b) _ [+ s. I137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
: K2 y3 @/ j. w7 l" g, c1 IMicrosoft 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./ d; H; D( Q7 S& _9 i+ M' }
: }. q! u; ~) Y2 j( zTCP/UDP 1433-1434 (ms-sql)
: j# Q1 E6 s4 r2 v/ ^7 \4 N0 uMicrosoft 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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