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之前发过一个帖子有关Telus, Shaw 的比较,
1 s6 z" i: N5 w1 X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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! Z& w% ?! C! h6 O0 ^ |/ |Does Telus block any ports?
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( ]& m6 I# z. ]" u& K! |3 a; q( zThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are: Y% g! Y4 R1 Z
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TCP 21 (ftp)+ i& s8 j/ y' F! b& e% z
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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0 a( ]& a1 ]. j" ?TCP 25 (smtp)# i6 E; |! G$ F1 E: U
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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+ c" @( h% |. D) [' _TCP 80 (www)
, b7 M+ J2 |( P- R6 R! E$ PCustomers 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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0 N" m% K4 b2 R2 U0 O+ G; \TCP 110 (pop3)& b! S& b0 M" k
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.) m b- g% J6 b# ~0 ~
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TCP 6667 (ircd)4 ?, y* }% i w: r; ^
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)& v! ~1 S( q/ R3 H! E8 W( y8 [6 M& `
These ports are commonly exploited by worm viruses:' ?9 O$ W* X9 v$ r9 [6 ^7 H) x( i
135 Windows RPC- g& R. Z& k! g+ ~" z/ J
136 PROFILE Naming System (basically unused)
% g& o: D4 ~$ _ ?- P137-139 Windows NetBios! K& }& c! p. I5 _
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TCP/UDP 445 (ms-ds)
d ^2 ?- ]8 @; b/ F) S4 WMicrosoft 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)" C2 [( {. `: @7 @, C6 D
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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