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之前发过一个帖子有关Telus, Shaw 的比较, 0 Q0 S# h2 ~3 n5 j+ d
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:1 g% @: J( U: {( b
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TCP 21 (ftp)7 b7 W- n0 H T2 P/ D" q
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)
7 P! a- U4 J! ^. B: B; D* sCustomers 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.' \! v3 e* I$ i j$ c
/ S% W- Y$ T1 k6 HTCP 80 (www)
8 n5 J \/ M. 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.# q/ V+ g8 n* f4 [1 I7 ^
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TCP 110 (pop3) V2 E" g- S4 y
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.; o. E/ Y2 }+ i( K# E/ P7 q K8 o
( ?* H" K% T5 j$ Y* b5 uTCP 6667 (ircd)0 w6 ]( S) ~; o7 t2 [
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.) w4 F6 {9 r( i3 ~
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TCP/UDP 135-139 (dcom and netbios)/ x. c# G; U" e2 {) {
These ports are commonly exploited by worm viruses:- x. w9 N, F, M/ ]" |. I
135 Windows RPC3 K: K) M" g4 E7 E/ F, V3 P: i# r
136 PROFILE Naming System (basically unused)
: W; y/ {+ i' o" r+ T! h( J4 x137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
1 W! g1 ]* y6 g$ D# n$ p, JMicrosoft 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), N l ~3 m& ]% J2 L
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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