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之前发过一个帖子有关Telus, Shaw 的比较, : \- P* q0 c, E/ f7 W) G9 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。2 D T& T7 n( m
- [! O5 F" q1 I& lDoes Telus block any ports? # K. P+ S2 s+ e! k, k0 T, e$ W: q
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The only packages with no blocked ports at this time are the Server packages.
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1 h1 b' O% X$ j4 d8 SThe Blocked ports currently are:! _$ K6 E9 @* W! g5 z
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TCP 21 (ftp)
6 r6 @8 c1 E1 _5 O$ e9 aCustomers 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.4 X: _' D* _' X, L& _, G8 _
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TCP 25 (smtp)5 R B4 g/ R: O1 a
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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5 U+ `# c z: M2 @# uTCP 80 (www)" V) f2 R% q7 h, c G" F' h
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.; \& A, E; E8 o* c. M% s
8 {5 }1 O" @8 |: D% Q# ATCP 110 (pop3)# K( `2 m" [: n" }2 x4 v0 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.5 _. K3 c- P8 \& N- J' f, |
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TCP 6667 (ircd)
% v$ b3 Q6 x" ECustomers 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)
/ b+ X! K- h1 L* ]. B8 m U) V" }These ports are commonly exploited by worm viruses:
8 u1 W3 `- {" @- E135 Windows RPC
; q r% Q. u: l% Q136 PROFILE Naming System (basically unused)* T& i! ~. J" ?
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- W3 E5 A( c( f* v( rTCP/UDP 445 (ms-ds)
4 Y1 V( z" T2 U- d4 n1 UMicrosoft 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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& z) c5 O' R& s6 ~+ ^9 M; aTCP/UDP 1433-1434 (ms-sql)
6 ^! G0 J5 o5 P+ 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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