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之前发过一个帖子有关Telus, Shaw 的比较,
8 l1 R# T9 N2 h: z8 V) y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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% {$ Y+ Z/ ^) Q4 X% h' ]Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:( [1 j" k+ Y; Y+ a( A
" [! ?/ v- e# Y6 I0 }1 p4 RTCP 21 (ftp)3 P: P @. r' A
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. S; e: ^ V, G$ D) X. @3 k1 A
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TCP 25 (smtp)2 Q: L1 x- d* d& d
Customers 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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* T/ J0 ], N$ C4 W' C2 y5 LTCP 80 (www); P6 F) {4 w' A. l) g: b* Z, I; R
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.$ p% E- R4 u/ B" I, k5 a" T: ?
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TCP 110 (pop3)3 `! [' B* a+ O0 F7 O% f$ y7 ~- l
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.+ P8 Q# ~' W- S, B ], d' K- R
$ H% K8 [& L: ~. m$ t. QTCP 6667 (ircd)
5 ^$ F0 N+ Q K4 W2 g- QCustomers 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)3 Z# M: d( F0 t7 t" w, A2 h
These ports are commonly exploited by worm viruses:
- D, O& D& n4 E0 h# p& O1 s135 Windows RPC
) N' e3 c1 _1 E136 PROFILE Naming System (basically unused)+ J/ f0 ^9 t, @5 {, M
137-139 Windows NetBios' m. U2 R8 u3 B4 d8 x* u# D
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TCP/UDP 445 (ms-ds)6 c S5 o% j+ S- Q
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.- E3 ^; `% F% Z9 ~0 ?
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TCP/UDP 1433-1434 (ms-sql)
' @; o. f3 K+ J$ I( ]/ [4 n8 v' yMicrosoft 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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