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之前发过一个帖子有关Telus, Shaw 的比较, & S3 H" L5 c5 ~5 p- k% [0 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?
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, |( @/ ~' B: j% k2 EThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:6 @. a( Z; X" S& T
2 D" b" p+ q }TCP 21 (ftp)0 z. Y. c8 t( ~; [: u$ ?5 O
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)0 D: S& w; q9 N1 b8 P0 Y+ d
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 b4 T: m6 p( X- }6 qTCP 80 (www)
! }) O% y2 R% P/ T* H5 l' |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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TCP 110 (pop3)
# U/ @0 u+ y! j& {- [7 [; ]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)
1 t% ~, Z3 R1 ?' H& ]. @8 e1 f3 Y4 ]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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8 I# K, E# v7 F o" c2 ?TCP/UDP 135-139 (dcom and netbios)
/ A$ J9 v, @' OThese ports are commonly exploited by worm viruses:" ~# q) Z2 o! ]2 ^
135 Windows RPC
, B" s$ l7 {6 ^" E) r136 PROFILE Naming System (basically unused)
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' I$ h# L: j% V: w- B( K M- p8 NTCP/UDP 445 (ms-ds)6 Q _' ?, M v# L* c$ B; b
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. O% m0 K; r, \" p% E+ y
! Y& M( y0 ^) Q, K7 HTCP/UDP 1433-1434 (ms-sql)
+ X& g+ |; u; s. RMicrosoft 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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