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之前发过一个帖子有关Telus, Shaw 的比较, + I" Y1 ~) p8 b! |# L2 A8 T
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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The only packages with no blocked ports at this time are the Server packages.
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: \- A& t$ u% S5 B8 [The Blocked ports currently are:
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TCP 21 (ftp)2 w! ^) E6 H7 m8 k! `) X& d
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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8 e# K" t3 N) e6 ]' B. y( \TCP 25 (smtp)
V5 {5 K8 B; E$ j% k# gCustomers 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.- { t- I+ b' S2 K% v* I4 {- ]4 Q
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TCP 80 (www)
+ z+ r/ }; w! N' R/ H: j; 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)) o) |( F8 n1 `* N% [! C
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)
- n+ m$ }: ~/ N3 b5 I# [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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0 A3 ]0 l& ~0 x$ P* PTCP/UDP 135-139 (dcom and netbios)
) E- k0 I7 L8 c2 d: p3 w. ]3 \These ports are commonly exploited by worm viruses:, X' z: }) u/ a& R2 n
135 Windows RPC
$ a) F3 @0 l; z6 b( s( K. v136 PROFILE Naming System (basically unused)
6 P2 J' d. [* T) p" d137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
5 s" i. y! E) E7 fMicrosoft 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.- p$ h6 a: {, Q, H& q1 N
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TCP/UDP 1433-1434 (ms-sql)* M* k- c' p1 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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