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之前发过一个帖子有关Telus, Shaw 的比较, 2 p- W7 {7 R) D* F# H
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? ! G* R9 I" w- s: N3 G! E
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The 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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4 T% B7 D6 f3 g, [) c8 \$ d C: kTCP 21 (ftp)
6 ^' U, E6 B- W- J1 pCustomers 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* [: X8 t" o6 E
; @0 u& t% R( d3 ]: cTCP 25 (smtp)2 [2 j$ R4 J" L7 g* c! R
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.9 ^' j5 n3 S7 r1 V: L* @1 a, l% [
" o% P- C @6 \5 STCP 80 (www)9 f t( X/ c4 u) y& ]
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)& ~9 |, f5 D1 g. d; W( 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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TCP 6667 (ircd)' }' Q5 z9 G3 k+ K! M& P, r
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.! ]7 s6 M0 i0 h
5 ]; l( x h$ K" `- m3 MTCP/UDP 135-139 (dcom and netbios)2 Z* H5 n( r6 k0 ]- N. i
These ports are commonly exploited by worm viruses:4 G! {: s5 o4 A/ X7 D7 Q
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136 PROFILE Naming System (basically unused)
" b* z( U% c# `2 V137-139 Windows NetBios0 b3 }+ Y4 w: l) E5 V
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TCP/UDP 445 (ms-ds)
! U6 T6 ~" V# p. P5 l" T" 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.) Z4 {; _/ }0 U( Q- g: P8 V
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TCP/UDP 1433-1434 (ms-sql)
4 Q0 Z) U6 B) S CMicrosoft 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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