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之前发过一个帖子有关Telus, Shaw 的比较,
" ~: G. f# A8 t( J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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/ W- W& f4 T3 k7 f2 o4 dThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:5 j9 @7 _% y& e# R( V$ i4 c: p, B
: h/ `0 G% f4 M7 M2 W( X4 \TCP 21 (ftp)
% z3 r+ [- R1 a3 e4 ]( [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.+ N: u0 F% ?4 T; o
& D7 j& q- H$ l% c# @2 VTCP 25 (smtp)
$ I8 @# j1 T% R% [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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TCP 80 (www)
8 R, o$ j2 ~4 _2 a* G( ~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.; n% w" P! H- C! v. F
3 l ~2 J) `! ITCP 110 (pop3)
6 |$ c3 G3 ^ G1 A. O) q: T, lCustomers 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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' `2 d( i8 z* I r9 H e& O7 cTCP 6667 (ircd)7 I6 R- c* z8 n$ b& y, e
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.1 d! O" U2 I% ^3 c: f; r& n, I$ U
8 I. R% {( a* E* s3 u h6 HTCP/UDP 135-139 (dcom and netbios)
" @+ u |1 \1 t" `, l/ s5 tThese ports are commonly exploited by worm viruses:
- t' D) ^- i* B- v' [- D135 Windows RPC
. z+ m/ W1 y& X! }+ L136 PROFILE Naming System (basically unused)+ P. N/ @) j7 B, \' ~
137-139 Windows NetBios5 o) R: Q& s6 D; d# `
" S: V! D7 N) G& |4 k8 HTCP/UDP 445 (ms-ds)
* b. Q" o) l: c. JMicrosoft 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)0 g/ L, s% J* [: b, c$ C
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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