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之前发过一个帖子有关Telus, Shaw 的比较,
1 }# a% \/ \% R2 ?/ r! T) j0 H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。* B- }% T& K8 ^9 f
6 z+ J9 h$ i4 y& u( t5 WDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. ; p( c1 [2 j8 \+ U
* O7 R; s. S+ c* oThe Blocked ports currently are:
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& q* y! N8 t6 O: g$ {0 ]& K! wTCP 21 (ftp)
- x+ W; n4 e2 N3 X! QCustomers 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)
, K$ I( g# t* D" [+ DCustomers 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. T" G/ y0 ?0 {7 B
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TCP 80 (www)! l; q2 L3 m5 A( F" q
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.
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8 P5 ]4 ?, }& v: rTCP 110 (pop3)- z6 A8 t5 B( r5 W) y- S; E5 g8 ^
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.
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. b! T4 Z3 c9 J* G. N4 A" U! STCP 6667 (ircd)
3 [; Q. n* {( J. D6 I& jCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.* Z2 N8 M' j3 T( K
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TCP/UDP 135-139 (dcom and netbios)
; x, c: M. F- i5 Q+ ~4 ZThese ports are commonly exploited by worm viruses:- L( D+ O% `! V# R
135 Windows RPC
& o5 \& b. d; O; a( G136 PROFILE Naming System (basically unused)
5 }/ ~; V+ U; I4 ^1 u0 I, N137-139 Windows NetBios; p4 ? |- h! u# d9 Y+ V
* C8 c5 D, D7 Q) F& p& a& w ZTCP/UDP 445 (ms-ds)
+ `& B/ T7 R, AMicrosoft 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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TCP/UDP 1433-1434 (ms-sql)/ S8 W3 I- b+ _+ E8 M
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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