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之前发过一个帖子有关Telus, Shaw 的比较, ! Y) v3 W9 {' N+ u& h2 d
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。, f# o& n _9 w8 z$ h o/ A
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Does Telus block any ports? . l9 O3 R( p6 l% m( J* j0 R9 v
% d8 L) [& e; i' ?: oThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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TCP 21 (ftp)4 N) U/ r1 n2 [ \$ Q
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.( `, X$ n- W1 f* B2 U9 v7 |
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TCP 25 (smtp)
3 p4 @0 H( t* a% t3 _- F) sCustomers 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. i3 c5 Z3 D& ]& J* d4 ^( ?
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TCP 80 (www)1 o- Z% K! N' M+ z4 @4 ^4 U8 k
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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G3 F1 `* X2 G$ F1 wTCP 110 (pop3)
5 n' \* \. m2 M: SCustomers 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)
1 t x/ S5 ]. Z# ^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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TCP/UDP 135-139 (dcom and netbios)
9 S0 B- u2 O/ @$ s4 RThese ports are commonly exploited by worm viruses:- A' N; p" a5 g$ c
135 Windows RPC* r, Q3 A2 H+ o I) I" |" K, z. w
136 PROFILE Naming System (basically unused)
' \8 l) U4 o7 D# ~! y8 c$ V. c y137-139 Windows NetBios I- S& G ]1 a; N0 n" y, Y
) Q: M0 y, c0 {& }TCP/UDP 445 (ms-ds)
5 b; u+ C% f. r) a5 LMicrosoft 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.' l& [4 T' K0 }6 g4 j
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TCP/UDP 1433-1434 (ms-sql)% D u8 F+ \5 {- _' x2 _& T
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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