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之前发过一个帖子有关Telus, Shaw 的比较,
7 p1 D1 B6 `* B+ t9 b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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+ i/ q7 X2 K* e, Q7 i, o4 M5 ^ mDoes Telus block any ports?
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' z. p; M; {# ?The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:: W+ R2 c& P! r+ `1 r
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TCP 21 (ftp)
1 m# W/ v% j, t* D# g1 iCustomers 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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. I5 @. R# [- |1 ]$ {" nTCP 25 (smtp)
: z8 T% q: H z. a( _! c' @& \. wCustomers 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.5 q8 n8 s# R8 g$ M& G
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TCP 80 (www)3 G2 l: E/ X( f1 b$ K+ ?; v z8 n
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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5 U. S8 ?0 i" \6 O. jTCP 110 (pop3)
8 M% {: u' d+ N1 I5 [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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& M# K0 Y6 u0 o) A; d9 cTCP 6667 (ircd)
# ^6 h- ` j2 BCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server., c: c' w. \. U) x
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TCP/UDP 135-139 (dcom and netbios)
5 x& F# z$ P% t; C1 ~! M& H& F2 OThese ports are commonly exploited by worm viruses:; f F" z& C% g
135 Windows RPC
V, L& ?9 _6 ]& ^4 m4 y0 r! P136 PROFILE Naming System (basically unused)
7 n5 M- ^; K- _137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
+ D5 v8 V& d* I u9 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.( A& E+ ]& @* |2 I2 F/ ~$ G
! ]4 L2 C) H+ f8 QTCP/UDP 1433-1434 (ms-sql)
' \ u: Q5 Q. Q$ Z e% }) wMicrosoft 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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