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之前发过一个帖子有关Telus, Shaw 的比较,
' ^+ j: l& {5 K. _' D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。 d2 m7 T: p6 h9 ~5 Q" \& f
1 i9 ^9 |4 _" \6 s: a9 LDoes Telus block any ports? ! a2 s' O& Z$ b
5 ~( D' X/ s: j( X3 wThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:" I$ u( \# v! d1 }7 W" M5 i
% S9 R* W$ L" i* B) c# e6 HTCP 21 (ftp)
5 a3 E; Q8 \/ u1 [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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% K9 f6 r4 J7 v/ D q1 l9 ^TCP 25 (smtp)
+ E7 `" S! Y% s+ M5 BCustomers 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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) p; I# s8 b! HTCP 80 (www)- M7 O* C! I. k; w/ k, u
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.$ d3 j; a8 Z) {
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TCP 110 (pop3)
7 S9 ^* s9 h5 | M9 HCustomers 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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& S& h& d, B6 |- D' d- iTCP 6667 (ircd)( C* k) z1 x# I9 f
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.+ `4 D" [$ T$ ?$ D6 N3 U' @
* z/ L7 t# ]' o, x2 _( h- W/ W0 eTCP/UDP 135-139 (dcom and netbios)1 O* M; Q; u' N6 }
These ports are commonly exploited by worm viruses:) Y7 d' E: W- p
135 Windows RPC
7 A' K9 h3 {% Z5 ?; g6 U" \136 PROFILE Naming System (basically unused)% q, o; U& @; k) F. F a: C
137-139 Windows NetBios) H$ m* B. v. f
; _& n) J. Z/ e# F, d- }TCP/UDP 445 (ms-ds). H" U: r6 |# s( p# 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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5 ~, [' m+ B5 C- _TCP/UDP 1433-1434 (ms-sql)
6 L3 x$ f- C* T0 q5 H+ M2 U& O/ QMicrosoft 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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