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之前发过一个帖子有关Telus, Shaw 的比较,
' A. d( g( m5 o+ `% j" b. s* ?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。, Q' q7 o9 q/ K) W( l5 }+ s
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Does Telus block any ports? ( K9 \" m% e8 R* d
) a* P0 B* q: l" zThe only packages with no blocked ports at this time are the Server packages.
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# ~" W- ]( S5 C( `# xThe Blocked ports currently are:
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3 e# Y* H7 E6 c1 X. ^TCP 21 (ftp)
8 T j. _2 j* [/ g0 G" lCustomers 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)
% ~9 O/ s% S: G: q: s2 gCustomers 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)/ E/ N, n' _; @# u$ e& a
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.- e9 ~+ z; @: ~0 o/ W
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TCP 110 (pop3)
& v r+ C$ M. w3 Y: b2 p; WCustomers 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)& }; ?( k. W" m; Y
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)
) M% I& [) } Z6 }; O8 |9 J sThese ports are commonly exploited by worm viruses:
+ Z* x: q" K% [0 J, v3 A9 G: v3 y135 Windows RPC
% U+ ?4 ^! A4 J8 c1 l, p+ W136 PROFILE Naming System (basically unused)4 X* v. {; R7 A, e" C+ J- p7 F
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)& b9 s" G' Y# L" W" C9 w
Microsoft 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)
: d0 H( r9 C- Q r1 HMicrosoft 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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