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之前发过一个帖子有关Telus, Shaw 的比较, / K" m7 d) R' B+ T7 M. _4 n4 X# x
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。! O% A7 L2 E! s3 h
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Does Telus block any ports?
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, n2 S" `- v6 W1 E% lThe only packages with no blocked ports at this time are the Server packages. & q; k( f2 J" e9 {& ]% y/ y
2 [! e& X# G1 Y$ g. I: X. c: ^The Blocked ports currently are:
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TCP 21 (ftp)" R- A/ v- I8 W" h+ Q \
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.
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W; U5 M: T. s U0 a5 FTCP 25 (smtp)# a% _5 j/ _# Y& B% U
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.2 I1 D. p) P. l: ~% Z) @. o, X" e
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TCP 80 (www)
. z! ~' e% c, f1 }- wCustomers 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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TCP 110 (pop3). h, z. N! i' W* V$ G) W
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.7 @2 ?! H/ v" ?0 ]. I2 O
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TCP 6667 (ircd); i4 u+ U( Y9 n8 S0 l
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)
: K& P5 w9 | A, GThese ports are commonly exploited by worm viruses:
, E& R/ }5 ~# N P. s3 c$ A5 H135 Windows RPC# {, I: E( L+ ^6 }! N* ]$ N& N
136 PROFILE Naming System (basically unused)4 l- t: E5 u% x! w9 i
137-139 Windows NetBios
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8 }# Y! j0 \0 y( `4 W3 g8 fTCP/UDP 445 (ms-ds)
- x: E$ T$ l! F8 nMicrosoft 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.% a/ l! s5 V( F# H$ P0 Q( C
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TCP/UDP 1433-1434 (ms-sql)
) t0 R7 J' B: N0 B- @3 ~( w$ q/ uMicrosoft 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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