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之前发过一个帖子有关Telus, Shaw 的比较, . ?) W. v. h- g5 S
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?
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The only packages with no blocked ports at this time are the Server packages.
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) K9 l5 x. ]' ]4 @The Blocked ports currently are:
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TCP 21 (ftp)8 w4 K2 H: s T: |3 @
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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( d) ~) \6 p T E* Y1 QTCP 25 (smtp)
( [$ o, W* n$ l1 ` j/ kCustomers 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.4 p3 v R7 _ D" ]+ a% s+ r
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TCP 80 (www)
4 o1 c J& K1 ~) LCustomers 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)
. h( ? Z7 v$ @6 D$ _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.5 B( ^5 g$ u9 i( R: f6 g! ]1 T+ A
. [$ u! `9 Z( y; v& ^9 y/ ~7 [% BTCP 6667 (ircd)
% S W% ~( l2 W1 jCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.2 l+ T- v+ l- V, B3 j* [7 t
2 R u% @2 t- \, DTCP/UDP 135-139 (dcom and netbios)3 E$ f, \/ L; v4 K6 `% V
These ports are commonly exploited by worm viruses:
5 b) Z8 C: S' c1 _* F# w135 Windows RPC# u* A3 ?" w/ \. R$ U0 B
136 PROFILE Naming System (basically unused)
, H+ f8 [: G; |9 t137-139 Windows NetBios7 M- j! L- G0 e! Y- i
" V9 l* A* x; G+ Y" [6 l% G! q9 V7 rTCP/UDP 445 (ms-ds)" J4 p9 f' z% t Q5 f
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.2 A( @, R( ?: i, h, S# I
: j$ r2 y$ R- p. ^+ N% X. S5 @TCP/UDP 1433-1434 (ms-sql)6 e' B @7 O- S) ~1 C7 d# ^4 b5 J
Microsoft 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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