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之前发过一个帖子有关Telus, Shaw 的比较, ' N2 a$ V8 Q, K' {
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。1 x: ^6 Q5 H [2 f4 ^8 Q
. F9 J$ W* Z/ S; U! _Does Telus block any ports?
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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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) b/ d d& V9 FTCP 21 (ftp)1 C X7 S# l' S! ]7 q, G
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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TCP 25 (smtp)
8 X5 h: h5 k7 n7 k$ k# MCustomers 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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/ U8 |1 Z# ~8 z* L! B5 T- bTCP 80 (www)
5 Y1 |8 W1 o0 V7 T0 ECustomers 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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" h' Y0 |1 M6 I, R$ eTCP 110 (pop3)
1 r1 ~3 k* O8 b+ ACustomers 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)
+ g% U3 w* D, f$ Z1 H% OCustomers 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)2 Q! H: S2 n E2 F7 Q9 E2 _6 S
These ports are commonly exploited by worm viruses:/ i m3 W# q- e: ~# F3 D' x7 W
135 Windows RPC
) s$ ?/ U! h, A& C! q136 PROFILE Naming System (basically unused)
7 Y' i2 t4 z; J' ?9 N/ L- T137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)' t9 T9 D+ Q6 Y
Microsoft 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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* q0 E2 u! a8 S8 f7 l- a0 oTCP/UDP 1433-1434 (ms-sql)( V$ Y8 T8 b# m) [+ [4 x$ n5 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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