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之前发过一个帖子有关Telus, Shaw 的比较, 8 E* Q1 ?* p: r! |; Y7 e
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。$ l! `, O' u3 F
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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. , L5 {+ y! U5 b [& { h" n
& J5 d! {9 b# v; o" i A: A5 pThe Blocked ports currently are:
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TCP 21 (ftp)8 k3 Z- W2 r) @* @- U9 [
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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9 c8 R) C5 P- b% q C* eTCP 25 (smtp)
- v$ K; M) V% |' { m8 jCustomers 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)
/ Z" F' J1 j/ R* dCustomers 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* j% X6 M" c" jCustomers 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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! m& |% u$ r2 @- F) m0 [) STCP 6667 (ircd)
* U0 C1 i8 x Y; V, dCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.- q7 u6 X- ^' T; j0 I# @
: I/ h9 e8 q- B" R% N4 ^TCP/UDP 135-139 (dcom and netbios)
' h j5 c; ?0 C+ \$ h; e. yThese ports are commonly exploited by worm viruses:
; J" J; m# H. g1 P* F7 f4 W135 Windows RPC
! t$ l* z/ G* e3 `3 L2 N9 E; |136 PROFILE Naming System (basically unused)* j R w' x$ p( @
137-139 Windows NetBios6 L) j, O- G/ P& B
" i/ {- S( g3 iTCP/UDP 445 (ms-ds)
- ]/ F* E* o1 W I5 t 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.
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0 m9 F! p$ b2 g5 NTCP/UDP 1433-1434 (ms-sql)
+ g( w3 ^. v4 \5 E$ _/ 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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