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之前发过一个帖子有关Telus, Shaw 的比较,
( C8 u @' f" S% R- {" m8 Y6 L( g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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4 u+ B5 ]; f1 u7 w6 mThe only packages with no blocked ports at this time are the Server packages. 5 u- `8 D. s6 w3 f; I) {4 p: a' p
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The Blocked ports currently are:
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TCP 21 (ftp)
9 N$ X+ Z2 r( N. C2 oCustomers 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.- c0 ~4 ~/ ~% `4 K
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TCP 25 (smtp)
( ^5 v7 r5 x2 s5 ]* NCustomers 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.6 h1 V/ H) m) B* z8 V2 M! h( K6 a
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TCP 80 (www)
' n% \ X. N6 PCustomers 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. ^% `, F, g; r- L$ D: C$ L
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TCP 110 (pop3)" n, j( B" |0 z! {& A
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.5 W' Q; U( k1 E- u! K b% I
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TCP 6667 (ircd)# R6 F0 n2 S/ b* r! @
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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2 r( p' I5 G+ E; G$ V* q- U$ mTCP/UDP 135-139 (dcom and netbios)
7 ^0 \, t+ `( O4 r* o! ?' yThese ports are commonly exploited by worm viruses:
S3 d9 _+ \- X1 B# r, o135 Windows RPC
& }6 u9 i5 M/ I136 PROFILE Naming System (basically unused): x, `0 \+ d( @0 N
137-139 Windows NetBios7 j! j+ k2 H) ^, j) X( K
4 k; F$ ~5 ?! O3 K- u" g) ~TCP/UDP 445 (ms-ds)
5 i H. B& e; qMicrosoft 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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: K% V1 j3 s7 e6 X+ ITCP/UDP 1433-1434 (ms-sql)0 y0 y" R0 A9 i1 G4 x% F& D( L: n
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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