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之前发过一个帖子有关Telus, Shaw 的比较,
/ F4 \2 F' {3 j8 R9 ]0 ?) @1 ?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。5 y/ D. y& Q% o# O$ @
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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. 3 a8 F* w3 X9 M$ {: P
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The Blocked ports currently are:
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/ Y: B) P( J' e3 h0 Y& u( \" OTCP 21 (ftp)0 e0 u0 L: e2 K$ f
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.* p# K; q" y' Q2 p0 ~- G
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TCP 25 (smtp)" w. H: o4 {. J8 a# l
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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! a. C6 s+ E0 H: G, w% cTCP 80 (www)- F% L! v! D! F7 o
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)) \ r# ]9 r; D
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./ `. ^3 U* l- A5 I0 f% t3 M7 `
) A1 |/ y6 @0 fTCP 6667 (ircd)
/ V5 m% u8 {5 r: A" {" f3 ICustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.' E8 B1 Q6 Y! y; ]# j
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TCP/UDP 135-139 (dcom and netbios)2 I q4 l8 l {5 I
These ports are commonly exploited by worm viruses:; y0 i0 A" b+ c! |5 e' [# v6 ^: a! h
135 Windows RPC
( Y6 O; K- K# t* n! L! p136 PROFILE Naming System (basically unused)
8 Y4 [& q9 Q* E$ y137-139 Windows NetBios% G$ q! t( z' R1 h
5 C$ u% O9 h' n2 zTCP/UDP 445 (ms-ds)
; ]& p }8 z7 D4 o: CMicrosoft 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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0 g1 e0 O& r' e! T- b; YTCP/UDP 1433-1434 (ms-sql)
0 ~# Y" t: F( l* P3 n XMicrosoft 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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