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之前发过一个帖子有关Telus, Shaw 的比较, ( Q+ q h: G2 N. t7 {, t. {
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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0 H9 J0 w* M6 ]+ _7 F; B" oDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. 5 Y7 F. E* d5 ^, y' ^0 ]- C7 `8 `
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The Blocked ports currently are:
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TCP 21 (ftp)
- M& W4 ^6 ^' {# y! C! HCustomers 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./ B# L e* N) q" u, g: j$ u0 e% X
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TCP 25 (smtp)3 m- L" ` z2 s# v7 |, ~- {* {
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.4 @6 J4 q6 ]; Q4 X$ h& e. T# p: K! {
Z' d! ~" q! R2 w3 ]TCP 80 (www)1 C* H0 @6 k$ M% K
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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/ m* N2 s) g* aTCP 110 (pop3)9 e1 W$ B7 x) _' r, T3 X
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.0 }( S |! s# E8 K4 z, ~
2 o2 _) c6 G% t3 K$ bTCP 6667 (ircd) K9 m+ D' D% [( H
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.8 A* \9 L) I; }3 v; y
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TCP/UDP 135-139 (dcom and netbios)
, D5 {2 ^% v y# K: J2 E) ~These ports are commonly exploited by worm viruses:
4 X l1 s; T" d135 Windows RPC$ A9 u1 ]# S z
136 PROFILE Naming System (basically unused)8 ]* F3 p" f7 \9 E" E4 C! E8 W
137-139 Windows NetBios
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6 Q+ R8 T6 p$ R: pTCP/UDP 445 (ms-ds)- L* O2 k1 o) M+ W+ w- S" @
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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, h2 O( t; {+ VTCP/UDP 1433-1434 (ms-sql)
* s2 L' b; d! W9 I5 ?: j/ ^3 g. bMicrosoft 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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