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之前发过一个帖子有关Telus, Shaw 的比较,
$ ?, F( z- u, [ H8 t& m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。, M+ S, ^" t/ ~5 `+ W
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Does Telus block any ports? # d/ a: x: l* ^ |4 b; x3 Y
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The only packages with no blocked ports at this time are the Server packages.
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/ `% j# A! }0 m/ DThe Blocked ports currently are:' b# S4 B) i* ^/ R
1 j2 K/ h' n. qTCP 21 (ftp)
" j, s, g+ O2 Q9 W6 i, QCustomers 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.3 ^2 ]+ U2 z3 X8 ^
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TCP 25 (smtp)
: _8 y* J" h' e" v/ z4 vCustomers 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.& h, J) C" G/ S0 y$ r$ o6 a+ i
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TCP 80 (www)
0 B! Q0 z, G4 Z2 J5 C2 W4 Y8 UCustomers 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)
' {8 Q. a8 `0 L5 m& O1 RCustomers 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.7 R6 a8 H# f0 J6 z2 c# V) U9 j
i9 u3 K& D# B7 C5 f4 A. BTCP 6667 (ircd)
f3 s2 d3 K7 J* a% ~- lCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.9 ^( v) I- {0 J
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TCP/UDP 135-139 (dcom and netbios)9 b: |- H3 ?/ @$ f4 {1 o1 |
These ports are commonly exploited by worm viruses:/ r0 m0 N9 ~" E. Q/ S7 D
135 Windows RPC7 l _# t( X$ t5 v
136 PROFILE Naming System (basically unused)
+ a# }2 p' k4 O7 c8 M( T137-139 Windows NetBios
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! \& z+ \* F3 d6 h0 l0 h- yTCP/UDP 445 (ms-ds)
7 ~& f+ Z, r4 W. `' a+ EMicrosoft 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.1 ^& J1 d) G+ z" T
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TCP/UDP 1433-1434 (ms-sql)) `! i& x) W) b7 k, a4 b/ i9 R
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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