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之前发过一个帖子有关Telus, Shaw 的比较,
) Q8 U m( u6 z+ }1 c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? 0 f9 ~& C' j$ O0 ~
5 p8 Y. T- S. k8 `4 x* _The only packages with no blocked ports at this time are the Server packages. 2 e. l, r/ t7 z0 D! `; T" D8 ^
1 E! V2 L% D" M, W1 f9 c" WThe Blocked ports currently are:
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TCP 21 (ftp)
* c6 U r& s5 ?/ WCustomers 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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+ H. r1 M6 ~+ I \9 A- x) cTCP 25 (smtp)6 m) v6 g c( C, u: W9 @$ t
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.+ `( w" _/ M' v8 }! Q
( ^, L; ~+ h7 l# ]1 O- UTCP 80 (www)
& o& z2 O! }: s$ w" ~3 C1 D- tCustomers 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)
+ g: v- w2 X, @( [! J% [ Z" QCustomers 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.! k# X% q5 j% W
; K" B( g+ V; T5 b9 `TCP 6667 (ircd)
2 b8 N# V% Z! }* ]' GCustomers 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); h0 ^( Q& z1 P: K; d4 `8 S$ ?; v
These ports are commonly exploited by worm viruses:
+ i" N2 n/ g- V$ _- f$ k: W4 G135 Windows RPC
/ C7 U5 P& x$ P U4 z1 z136 PROFILE Naming System (basically unused)
2 s/ ~4 R7 A! l `5 t: h137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
3 E c" Z" |# A' x- l' NMicrosoft 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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" Q, h. L5 p* a; m! qTCP/UDP 1433-1434 (ms-sql)% `6 U7 q' }3 Q) j
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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