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之前发过一个帖子有关Telus, Shaw 的比较,
' b, _$ v8 ^9 U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? & D L" J& Z& M8 O
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The only packages with no blocked ports at this time are the Server packages. % d) C# E' i$ q3 e }
+ O: r: e( {0 `5 m. w! D- q0 wThe Blocked ports currently are:7 N5 B8 X1 o, {+ f& w7 I/ @
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TCP 21 (ftp)( v! b$ V7 z2 F
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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4 m) A, i2 D1 z ITCP 25 (smtp)
% V; Y7 f' D. E$ ^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)& t/ v4 ]5 [2 i! \' d
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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' O# ~/ ~# a" D* g2 pTCP 110 (pop3)
+ `2 ]) G& t# h0 Q: n" y& M% |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.5 M: q: o8 I; p2 ?) @4 [2 K8 u; l
1 `2 Y! O3 P% iTCP 6667 (ircd)5 D! H' a0 {7 k5 I0 J% H! f
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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; g% R5 S' }1 HTCP/UDP 135-139 (dcom and netbios)
" s. ?4 x) _9 S5 r' x) D8 G' bThese ports are commonly exploited by worm viruses:
3 N2 W$ K6 w3 @$ ~135 Windows RPC
1 T8 _% Q4 f E8 K136 PROFILE Naming System (basically unused)# n- e$ D* q" W$ z
137-139 Windows NetBios$ Z6 ?- s7 A+ U0 [9 c J
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TCP/UDP 445 (ms-ds)
$ }; q! M$ a3 U' D$ T, oMicrosoft 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.( H$ r& F: ^2 E0 A
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TCP/UDP 1433-1434 (ms-sql)
5 ~2 w* r; J& mMicrosoft 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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