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之前发过一个帖子有关Telus, Shaw 的比较,
5 E& x6 L2 X5 s/ u* }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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Does Telus block any ports? ) w8 w0 F2 U! l5 @/ x
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The only packages with no blocked ports at this time are the Server packages.
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! ^4 F6 [9 B8 O5 k% e2 d! ZThe Blocked ports currently are:, z3 S! H9 \. b! _6 q2 l! H
2 q2 Z2 \* d6 K# ?6 Y) ^& wTCP 21 (ftp)3 R2 {# }6 c$ L% A. p9 _, q( J+ r
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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TCP 25 (smtp)
# ] S/ E* }& ], ECustomers 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.8 K+ z$ E) V) V! [+ N5 t: p
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TCP 80 (www)
- O9 Z% s; F% `7 ^! K VCustomers 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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( J. y, r) t' A( o; Z1 pTCP 110 (pop3)0 j4 R% R7 ^* C# q' x3 J
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., c+ A6 H. {6 ^$ I0 }" g7 g) c
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TCP 6667 (ircd)
% G7 }& q5 i. u" } K7 X2 a2 c. gCustomers 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)* X6 J3 }: O! E& Y
These ports are commonly exploited by worm viruses:% `% G7 N7 M# R& u
135 Windows RPC9 ~; h8 i0 Z& A+ p( b) D# w) S
136 PROFILE Naming System (basically unused)
R6 M. `5 F% B137-139 Windows NetBios2 q% c9 g3 E# l
2 T. Y6 L. Z `! _/ D* a+ t; sTCP/UDP 445 (ms-ds)
0 \% v. a6 s8 I. D! N; `6 [+ NMicrosoft 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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TCP/UDP 1433-1434 (ms-sql)
" t) _- i: y5 NMicrosoft 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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