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之前发过一个帖子有关Telus, Shaw 的比较， & s6 v7 x. q# b( r2 K4 g
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/ b; L" y n; P3 X VDoes 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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3 _2 H; V0 C/ G+ v' q0 f: h) ~The Blocked ports currently are:
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TCP 21 (ftp)7 z$ k/ k: Z. ]) g
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./ {' ?; w2 h9 S# {/ d. M7 R# y8 F
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TCP 25 (smtp)/ z5 X4 _3 @2 C/ ^" M# [) [
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). }, B7 Z1 V. ~" j6 H& I2 f9 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.
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TCP 110 (pop3)+ \7 _+ G- a/ y, J+ X: c) s+ l9 W
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.
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4 b( q* o* H4 W/ h1 c% d1 W* HTCP 6667 (ircd)
) C; s; z- A3 B: q- i7 q' WCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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* c/ ]! {5 q( h( n' j z8 I/ I/ [, uTCP/UDP 135-139 (dcom and netbios)( v# P B0 \- Z! ?
These ports are commonly exploited by worm viruses:" p3 c9 S* |- B$ {; k2 P- z
135 Windows RPC
* ]5 V3 u6 j1 |; r/ H136 PROFILE Naming System (basically unused)1 s( I/ A5 q6 `- L2 e0 W
137-139 Windows NetBios
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, s3 O' l- C3 _& {# w4 ZTCP/UDP 445 (ms-ds)2 E& L: ?( J- _0 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.( U) \) t: }; Z/ r! `/ d
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TCP/UDP 1433-1434 (ms-sql)
7 u& l) s7 x7 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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发表于 2009-11-7 17:58
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