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之前发过一个帖子有关Telus, Shaw 的比较,
- [/ h* u- _' v n6 y0 e2 W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。+ E8 w3 ` d# t. @6 M( l& X
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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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The Blocked ports currently are:
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TCP 21 (ftp)9 y+ F; q( M, S- i- {9 v4 U% B) I
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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. ]+ V) c8 }5 X; mTCP 25 (smtp) P* Y7 \: F7 f7 w. Z
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)
6 |( Q2 J1 F7 y! ECustomers 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.$ i5 w2 v5 m9 C5 P0 ^
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TCP 110 (pop3)& a; d0 K/ G( ^$ M
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 g6 t) e1 ]4 i8 }
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TCP 6667 (ircd)
m- Q: o5 E3 H* q& UCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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& B) B' U) \6 N! ]TCP/UDP 135-139 (dcom and netbios)
* x @- f z* {: L# A7 L9 X# Z! J9 |These ports are commonly exploited by worm viruses:
2 m8 y" y3 z4 H7 d( o135 Windows RPC
+ T& [) T. [' p; N6 ?136 PROFILE Naming System (basically unused)) H: a: j* v; ~6 J$ y1 }
137-139 Windows NetBios
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1 T, I! d4 ]6 M7 n5 X; U# Q7 R( qTCP/UDP 445 (ms-ds)/ R* M/ `9 v5 }1 }2 Z
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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+ P& @% d3 Y7 H: n+ ?' cTCP/UDP 1433-1434 (ms-sql)& h9 z& P" M- `; x6 [
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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