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之前发过一个帖子有关Telus, Shaw 的比较, & f6 _( Q) D. [+ L9 b' h
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。# ~7 Y; H) u3 X* k2 d b
: H2 S7 C- B, _4 zDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. ! K9 X; S% x; p- N
, _/ z; x3 _% t9 S* {The Blocked ports currently are:$ x, m8 x2 A5 a* h1 M5 t
/ T5 R8 X+ @: `* A9 F* rTCP 21 (ftp)
* D- b% \0 L, ~" o n. o3 ACustomers 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./ C/ Q$ ^6 }6 p% n4 k
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TCP 25 (smtp)
$ K; b7 A1 ~7 E; J0 A4 f* yCustomers 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 q, U3 K# _& \# _
9 g" ?& b% a" j# j1 U' C0 \TCP 80 (www)4 \7 e( N$ N x9 G3 z6 E
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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+ R+ }6 \$ V& l6 l* `# D+ U$ `TCP 110 (pop3)
$ T5 g$ G9 i) m4 b: G% v7 ]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)
% ]) q& E0 C z' [ |+ fCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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1 j9 Q9 J) ^% d, S. `9 ATCP/UDP 135-139 (dcom and netbios)
/ b# _1 V+ D9 }4 \, YThese ports are commonly exploited by worm viruses:
1 }' G% E: V! b* A, m1 W135 Windows RPC" ~6 g. g. l$ x. K
136 PROFILE Naming System (basically unused)8 }& P+ }0 A B/ u2 A
137-139 Windows NetBios
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1 J4 ~% ^' h) y7 H5 }6 b- rTCP/UDP 445 (ms-ds)
6 N, j6 N4 L& s( P+ ]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.6 C8 c7 n7 B8 O9 z4 l$ m$ B
i' D$ n8 V6 lTCP/UDP 1433-1434 (ms-sql)
( J( H/ M% V3 i5 ~# BMicrosoft 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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