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之前发过一个帖子有关Telus, Shaw 的比较,
1 }. G2 ]* R2 D9 _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? % u' i$ A# x; D7 u. h
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The only packages with no blocked ports at this time are the Server packages. 5 W3 Z! z" `3 h, j. x9 T8 y" t" p) L9 A
" e/ r- D, l, |The Blocked ports currently are:, ]; n( C: U7 x, Y0 E9 `9 ^
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TCP 21 (ftp)4 |8 W% B( X: q4 u0 l" x
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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TCP 25 (smtp)
% l2 u' W2 Y1 xCustomers 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)4 k# _ E t0 B- r2 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.9 ?$ P" {+ Q: G& |+ o) ~
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TCP 110 (pop3)
, n& n8 x8 J5 e G$ 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.- P. G6 n9 S$ x0 ]" v
: ]6 [1 o' k7 x6 [TCP 6667 (ircd)
L1 g, z, d8 G. B* pCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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; c( n/ }( Y, z& QTCP/UDP 135-139 (dcom and netbios): a& l: D; g$ R& m
These ports are commonly exploited by worm viruses:, K5 M) |$ ]* m) Z. K' l: ~
135 Windows RPC5 N1 R, O9 n, c5 U8 R4 A; i
136 PROFILE Naming System (basically unused)
! E. w' [% \2 O# {# t7 x+ u137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
5 }% i7 ^- ]9 U( }) cMicrosoft 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.5 j) F5 c. n! N8 \* r9 k/ G8 _: }
5 g% D- h0 V( X6 cTCP/UDP 1433-1434 (ms-sql)
' k, M% }* l1 z/ o; x3 CMicrosoft 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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