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之前发过一个帖子有关Telus, Shaw 的比较, 3 R+ B( P4 t7 N: A5 @
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。0 C o* z- _, F) M5 @* G% [+ n
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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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TCP 21 (ftp)
) w. |5 d4 e8 r9 rCustomers 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)% j$ _' `" s5 U: g
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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8 c5 A7 N6 s7 w1 d' N0 [% |8 `% RTCP 80 (www)" v5 f, B1 V d% x l
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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TCP 110 (pop3)! f/ F2 `; l$ B2 i5 ~, `3 W1 G+ u# d
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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0 s8 ?/ E4 J" `TCP 6667 (ircd)$ V i1 e) A1 p; L2 g7 N
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)8 ^5 j8 O0 v2 c8 o' n
These ports are commonly exploited by worm viruses:
8 p \) G- C8 Y+ r: L$ h135 Windows RPC
$ A. p- C _4 j8 A/ K/ {: r7 D/ v136 PROFILE Naming System (basically unused). J: r# }# ~/ @- v+ ?0 _
137-139 Windows NetBios9 `) L# f1 z/ Y ]4 o
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TCP/UDP 445 (ms-ds)
5 C7 l. h% ^% G0 R7 m, pMicrosoft 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.
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TCP/UDP 1433-1434 (ms-sql)
" P% G0 ^. ~* O `/ I- N# e& QMicrosoft 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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