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之前发过一个帖子有关Telus, Shaw 的比较，
- k- E$ W j# w5 {! ]8 m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。: h0 g( ?. y- u" L5 \
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Does Telus block any ports? 6 q- k8 V" ?1 d& j/ n/ R. L, }
( J. l) |$ e+ X: H5 ], FThe only packages with no blocked ports at this time are the Server packages. 0 c! Q) H3 v7 }4 `9 J. T
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The Blocked ports currently are:
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TCP 21 (ftp)
+ V$ H4 B: |* ~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.+ w8 | |3 l: v. o
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TCP 25 (smtp)
* J3 [2 U# i! z5 f" C. U" P7 J- _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)4 p% E1 k. V2 D' r- N8 {7 G
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.* \! z- t9 V+ J
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TCP 110 (pop3)5 c# V! z5 M Q0 Y9 W' T- v5 K& \0 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., j/ L; t5 l8 x3 n9 o
3 x& p a( m1 L" @7 \' `+ I0 ]TCP 6667 (ircd)) K5 z4 p3 s6 E; }/ H
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)
# W# p. ^# R' Z$ S) H9 ^$ pThese ports are commonly exploited by worm viruses:
9 A& G7 G8 t: H/ ]135 Windows RPC
" p5 y f N" j2 `% M136 PROFILE Naming System (basically unused)
6 ^ t" `4 w) q$ K! `2 i137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)( p7 p( I# C7 m `) z# ~/ E1 k8 R5 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.1 Q% Y( d5 y; M, i* F
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TCP/UDP 1433-1434 (ms-sql) z2 c) W2 g! Z }4 s
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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发表于 2009-11-7 17:58
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