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之前发过一个帖子有关Telus, Shaw 的比较, 5 i }9 X6 x: Y4 i" f6 \- N
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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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:( m+ y& r3 W- i
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TCP 21 (ftp)6 L7 ]& h: u+ e! |( R+ A
Customers 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)
& `1 X) e) O: y, _$ {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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7 e3 B0 P- j4 PTCP 80 (www)
J% U$ l4 p4 J' N" cCustomers 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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" v& ]6 D# {; \7 c. s$ F* UTCP 110 (pop3)
1 w( q( X3 w8 sCustomers 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.- j6 m3 v7 N# J9 V4 E
- T2 ]' z: h+ v- p9 KTCP 6667 (ircd)% j" X0 H4 X2 m+ x
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.7 `0 T* H V8 t9 ]" q% |
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TCP/UDP 135-139 (dcom and netbios)
0 c4 v' T0 K% Y$ h* r+ s. c! [) RThese ports are commonly exploited by worm viruses:; B3 Z4 E; @; U' |/ Q
135 Windows RPC
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% W/ ~6 h/ x6 \* o2 q137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)* D- k3 u [ q+ ^9 J4 r$ |9 S9 |
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)8 E; B- H0 l2 h h7 K; V$ a
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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