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之前发过一个帖子有关Telus, Shaw 的比较, S# \( h3 o/ F6 i
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。 p1 Q2 \. Y& T' p. Y$ W
' U3 F* a- _% q& zDoes Telus block any ports? 7 o8 ^3 s4 P n% F/ I; l
' B' C3 K7 U( u7 Q+ ?7 Y2 VThe only packages with no blocked ports at this time are the Server packages. $ F/ _! \1 L6 S
% t" K( K! w6 }7 t& ?The Blocked ports currently are:
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TCP 21 (ftp)$ @' {- ]+ m! k# `8 {
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)
- I. K5 J! ], ?) U% I2 yCustomers 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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& R7 z; [& ~7 t" i" x3 ETCP 80 (www)
$ L! i V% g8 N" A F. k. jCustomers 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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TCP 110 (pop3)
% \+ i9 a( G+ u, r5 ?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." ?" n. z/ S- Q: s
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TCP 6667 (ircd)
; e7 k) ]6 i" t. z& S: 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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TCP/UDP 135-139 (dcom and netbios)
* X; s, C1 E b) g6 C& uThese ports are commonly exploited by worm viruses:
8 V, H6 Q+ z4 ^: A# O3 @135 Windows RPC( X# s' p! _$ X P6 J% d
136 PROFILE Naming System (basically unused)
# R" j4 P* O. n$ b( K137-139 Windows NetBios
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0 a' g- N# s D# S! k, h. [ wTCP/UDP 445 (ms-ds)
8 ~- }* {7 x6 A( f! ]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.* m. C% T7 c) L9 i! `* g6 J0 Y5 T3 ?# a; t
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TCP/UDP 1433-1434 (ms-sql)
, {* B& k" S/ 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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