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之前发过一个帖子有关Telus, Shaw 的比较,
9 w. V6 p$ \( r5 W+ o9 |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。4 M# K. [" [: {
, |! Z% K0 d, p+ {$ ODoes Telus block any ports?
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I/ W+ P8 t3 _* w7 oThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:+ D/ M: e& ] o) R2 s
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TCP 21 (ftp)
, W+ I6 u9 V% F, i: |" p3 q! _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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" D7 ?2 N- V. kTCP 25 (smtp)
% |& i# e* M; I8 P1 BCustomers 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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( p1 C" E# N2 O5 L( }9 wTCP 80 (www)
{; c5 x- e: `2 y jCustomers 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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5 H- g5 e( d8 gTCP 110 (pop3)! ]9 i. Z" c0 M. C
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.2 O5 d2 e9 A8 D$ x ]8 H
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TCP 6667 (ircd)
* o0 f Y4 e5 G& r2 ? cCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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. y4 ^& s5 S' JTCP/UDP 135-139 (dcom and netbios)
) d7 `" d: l' m, S/ s1 k( K; kThese ports are commonly exploited by worm viruses:
& q' P( o, _* Q2 K N135 Windows RPC
+ t: ?2 ?* s) w0 N8 J7 s136 PROFILE Naming System (basically unused)/ S! D* O& U1 Q
137-139 Windows NetBios/ i, c+ a3 j. e% q5 L k* w* Z
( |+ z5 H7 L* m. F# \7 dTCP/UDP 445 (ms-ds)4 j% l2 Q5 l" n1 W1 |- W
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.
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TCP/UDP 1433-1434 (ms-sql)
% Q+ |, Q! w+ _" r$ }3 w# TMicrosoft 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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