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之前发过一个帖子有关Telus, Shaw 的比较,
" \4 b$ n7 Y# ~ D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。; E# w4 c/ M: h3 W1 F) P
C! }! G) l! T7 ^Does Telus block any ports?
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( p. b! e- R+ a+ R' @# i: V/ h$ u6 ZThe only packages with no blocked ports at this time are the Server packages. 2 z9 {3 Q$ u0 b$ O
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The Blocked ports currently are:6 F# P3 s0 L9 G
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TCP 21 (ftp)
: m, y- o" Z0 c; G" eCustomers 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 |3 [' t/ N- Y8 B$ a: O! S
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TCP 25 (smtp)
7 @. b) v5 N9 D0 ECustomers 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.2 N$ Q8 G8 |2 U# i6 W2 g
, I( A6 N; V Z, ?TCP 80 (www); l) h3 ^/ Z2 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.
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5 B: T% p' ^ OTCP 110 (pop3)( w t! T, \$ l# Z# k, F
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.0 @3 P+ v/ d3 g; E
: |. l p) }5 r$ _4 H' d+ F2 LTCP 6667 (ircd)" }9 `7 ]2 b* L$ g* p8 s5 s
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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TCP/UDP 135-139 (dcom and netbios)
5 s6 q1 T, X( I9 oThese ports are commonly exploited by worm viruses:0 ]6 M5 U# S; N5 X4 Q
135 Windows RPC
7 \4 x0 x1 X; e: a' d/ l3 s/ K% \" g136 PROFILE Naming System (basically unused)
" I- L/ T8 Z5 I7 ?- {8 s* h' E, Z137-139 Windows NetBios% m4 s, \ q0 W/ \' d3 ^3 d5 k
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TCP/UDP 445 (ms-ds)6 P/ M; H! d. _7 s, x
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.9 }1 M; v' Z1 Z
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TCP/UDP 1433-1434 (ms-sql)6 s- j& X5 T2 E# N& o1 S
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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