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之前发过一个帖子有关Telus, Shaw 的比较, 3 V" `# n7 h' _2 V7 ~4 m9 a
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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+ C! C! X2 \! T6 @* ?+ ?The only packages with no blocked ports at this time are the Server packages.
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) }- u% ~: N5 \( W4 u5 }! J7 x6 xThe Blocked ports currently are:3 P9 p7 C5 Y$ ^5 ?: x! ?: e
2 o; n I1 N2 ^+ j: }- DTCP 21 (ftp)
3 l2 u; |. |2 iCustomers 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) ~! M: l. W, s3 y5 n2 M% M) s
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 h% W% V2 Q0 }6 I
" N5 K' m' A/ lTCP 80 (www)
* e. D% i3 C* r; _3 `! OCustomers 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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( Y' ?1 f/ h& M9 E! w) yTCP 110 (pop3)7 [6 M* } ?' f0 C& l4 t
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.
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TCP 6667 (ircd)3 B) s) ?! ^" F) _6 x: r
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.4 R1 }; s. V* U, ^) ]3 U! S
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TCP/UDP 135-139 (dcom and netbios)& S2 B6 N; i: |$ H& M& [( b
These ports are commonly exploited by worm viruses:
% ]2 `( R3 i/ p: U k135 Windows RPC
9 D8 ~" |# K' ^" |* Y136 PROFILE Naming System (basically unused), R! f2 y/ v" ?! T* \
137-139 Windows NetBios9 C5 Y! I) H: s
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TCP/UDP 445 (ms-ds)
3 d' X4 t: t6 f: aMicrosoft 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., H8 Q0 j% S( j0 K. Q
; t$ P: o* s- k8 @5 R3 aTCP/UDP 1433-1434 (ms-sql)0 E8 s, L8 S1 H. z/ M' Z' I( h
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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