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之前发过一个帖子有关Telus, Shaw 的比较，
% A* r" @- ]8 |4 i8 Q6 E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? 3 |( S4 j; p1 y0 H& _+ {& f6 ]
: u$ T5 G0 t/ ~* d' I/ `The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:! J+ r B) X6 S& ^: t* m! m9 i
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TCP 21 (ftp)
1 g$ V' s) b. g& M1 a! K; vCustomers 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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7 F& m" {8 j0 h9 vTCP 25 (smtp)4 \0 I" H$ _% z
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)
! y! ]( Q! N# {& ACustomers 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)! c- D+ r" } w& l/ Q
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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& r0 v5 p1 o* ]# t9 @1 M$ xTCP 6667 (ircd)
9 ~. S! U* W+ z2 |9 VCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.; Q/ H0 z- c* \" Y. T
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TCP/UDP 135-139 (dcom and netbios)5 N' j/ Q/ h) @7 x9 A' t
These ports are commonly exploited by worm viruses:
' \! k* Q( t* o& B" r4 C' j7 @135 Windows RPC, ]9 T' ?; f* R# f
136 PROFILE Naming System (basically unused): ?, t1 t- i6 F) _
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds): f; Q5 \0 Q5 k
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.9 N- f3 Q' x k# X8 p8 v
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TCP/UDP 1433-1434 (ms-sql)
: n7 Q: c; E' Q2 u+ R6 OMicrosoft 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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发表于 2009-11-7 17:58
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