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之前发过一个帖子有关Telus, Shaw 的比较, . K4 m0 l& X# ?7 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?
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, x! `, W3 P7 c; E/ lThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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) `6 x! a i+ | C- ]5 f8 a! Z0 C& mTCP 21 (ftp)
[) N" M9 R3 Q% Z8 s+ TCustomers 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)
; h) q. D" w/ h6 g: @% rCustomers 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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TCP 80 (www); q& D% H) r5 v, ~
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.# ?2 r1 C+ [5 p' @- v7 x6 Z
/ }$ A, B% {6 @. C* W9 {5 K, c- UTCP 110 (pop3)$ [7 ?+ @# o/ @
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./ w8 p1 d) O" @" w! I0 ^
* t, Q' X3 s9 `1 D6 _3 MTCP 6667 (ircd)6 f: Y* w% L, s; H+ r# r3 [
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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: ~% _. o, F! XTCP/UDP 135-139 (dcom and netbios)
' ?9 c; J7 w) Q3 _ Q) }+ PThese ports are commonly exploited by worm viruses:
, ?7 o" m' U+ m" B135 Windows RPC
2 P' V+ c1 j; b3 m136 PROFILE Naming System (basically unused)
8 s2 e% l, c. v5 p1 _+ O137-139 Windows NetBios5 h" {1 Q9 f) J4 @
+ F' i# C4 _1 l9 t3 m! J: {TCP/UDP 445 (ms-ds)
& ?" Q& ?2 k; pMicrosoft 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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+ {9 M4 \4 M% w& Y8 GTCP/UDP 1433-1434 (ms-sql)1 B* `/ x; Z. V7 h
Microsoft 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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