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之前发过一个帖子有关Telus, Shaw 的比较,
: M: ^4 a" G8 j% r n/ f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? 5 j; O3 ~$ P5 E+ q( _: P, A) D$ K
+ \+ Q5 d2 n" J$ w! U. h$ W) nThe only packages with no blocked ports at this time are the Server packages.
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' S$ ^7 S$ V: l# {* fThe Blocked ports currently are:0 k7 r( T: u6 u+ A$ q
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TCP 21 (ftp)0 r1 Z. ~% o i/ r) a4 B c
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." S- _1 J2 C/ y1 l; w' i7 s7 {: }
2 o2 ~# h, S; ETCP 25 (smtp)+ h3 G1 z$ {, y8 h
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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) i& t) g, T0 s6 n1 |; Q; iTCP 80 (www)+ M; G4 u( c; { g& ~
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.+ a/ ^5 }. }7 C
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TCP 110 (pop3)
5 W0 h# K4 W$ m) o' iCustomers 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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/ m0 @+ [4 `2 e0 n# G- C+ V0 [TCP 6667 (ircd)/ ?1 u4 N2 i I1 q/ r* z
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.4 q' t( N6 q1 X. E V
: D7 ^0 I o6 v4 ~TCP/UDP 135-139 (dcom and netbios)6 O8 W: ]+ n: l! Y) O: L. _5 g
These ports are commonly exploited by worm viruses:6 u% Z) E' G; d6 v& J4 @1 X. n* B
135 Windows RPC
& ?: O- o8 N- p- X% L* h136 PROFILE Naming System (basically unused)
+ |% c4 W) O; h) M, }137-139 Windows NetBios2 a; _) D; n: m3 s0 o/ K
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TCP/UDP 445 (ms-ds); }$ h5 S: {; n8 q/ _6 w6 E/ ~
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)/ v' P2 X1 R0 X0 S( z4 q( A( R+ U
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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