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之前发过一个帖子有关Telus, Shaw 的比较,
2 l, D& `- V9 r# O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。3 _# }& t" r {
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Does Telus block any ports?
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1 w$ d" V* N1 L# z) UThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:" `9 N" ]& P# L" F1 _
7 A' A- l6 o6 VTCP 21 (ftp)
8 p F! f9 s2 x5 SCustomers 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)
; r7 z0 v8 ]4 Q3 | c- i! m4 MCustomers 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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TCP 80 (www). w9 K# b4 w5 ^. f5 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.$ h: X7 u; j# s- w9 D$ V$ T
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TCP 110 (pop3) ?1 S; A& x6 o5 q# r8 S' H6 C' N
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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" Q3 H& a) A( Y$ _- H. fTCP 6667 (ircd)
9 d3 M; j3 x' B6 N) D- gCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.8 _* ~5 }4 D5 R3 c z2 v
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TCP/UDP 135-139 (dcom and netbios)
: [5 I* V! X6 S: O8 cThese ports are commonly exploited by worm viruses:. A! M' O7 d+ W$ f5 d& `! n* K
135 Windows RPC
7 ], s7 ?4 M* `7 w2 z136 PROFILE Naming System (basically unused)
* p9 s& i/ @3 e$ q4 k( Z' M4 y137-139 Windows NetBios
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) v7 a# |8 t; ^5 K/ B/ \TCP/UDP 445 (ms-ds)% ` j5 o$ r! ]. W
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.' w8 `5 i% U3 t6 _. t* V* P
% l' L3 ]: E. f! m7 D: C* b; XTCP/UDP 1433-1434 (ms-sql)
P& M4 G$ e; {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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