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之前发过一个帖子有关Telus, Shaw 的比较,
, k, e. m% @ Q) k' `, R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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; y, F! n* O2 @1 a# j# {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:4 S$ U* j% f7 u5 V4 S
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TCP 21 (ftp)& Y) }7 G6 }% q; g7 |! x9 x+ r; p
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.8 y D7 ]" q z6 K1 |* F
6 @" y1 v0 _! K4 P. ?' `TCP 25 (smtp)( {: T4 f( j$ _) d- ~5 ^
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.+ O7 K0 _" z! y+ k' D/ G ~
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TCP 80 (www)8 j+ k" F: {' N3 K6 S: t
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.3 F$ \, i8 }7 w K- G9 I5 o
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TCP 110 (pop3)
. _1 z% [& o- g6 L$ I& e; ~4 t0 tCustomers 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) ^( l: B8 g: J0 e* M7 ]0 }
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.6 y; G7 P3 W/ [$ s! {2 B; W9 K) S6 m
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TCP/UDP 135-139 (dcom and netbios)
& z5 t, P2 V, g. l. U5 T: bThese ports are commonly exploited by worm viruses:' i1 y: \" o+ Z( o6 v, x: @
135 Windows RPC
+ p, ~" P! p$ a' B# \7 o8 d136 PROFILE Naming System (basically unused)
" y I& q7 |) e% ~+ ?137-139 Windows NetBios; s% a3 q, s& {6 _/ F
( p. [0 g* L9 x! u+ h# {4 bTCP/UDP 445 (ms-ds)8 ?( D! |1 I: }8 D( R" D
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.9 S. J C0 @# K( l" h, ~# C
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TCP/UDP 1433-1434 (ms-sql)
5 m5 h7 E" H) z3 Y( P7 YMicrosoft 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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