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之前发过一个帖子有关Telus, Shaw 的比较,
6 s& G. D9 n! M Q' X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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5 j4 p: R4 f& Q6 I( ?! }Does Telus block any ports? 7 O+ f9 J& j# x# [: R
$ i$ ~! |2 |. S$ G* Z5 o$ CThe only packages with no blocked ports at this time are the Server packages. d1 u3 b5 F) d% ?8 X
$ U8 n5 W- e- q& J3 u4 J! XThe Blocked ports currently are:. E+ I( p- M' Y ^* m% X. k
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TCP 21 (ftp)2 b4 T4 |1 u5 D* d% z, b: B7 n
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.1 q$ _# H$ ^0 L: r9 O. C7 E: |$ y
* s5 f) D7 Z# {9 C$ F4 F3 UTCP 25 (smtp)7 r9 L( L4 `5 P, n5 T( D
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.
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9 O6 E: v0 X6 ^2 X: wTCP 80 (www)
( W# r$ M" O! w- y. m) f6 t8 fCustomers 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)
% f: O$ _% n* {2 W: p# K, FCustomers 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.: v2 s4 |- n* |5 }- s8 i5 l# e
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TCP 6667 (ircd), l! \7 V+ }1 ~- M* S
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.3 a/ e- j8 X5 T1 W" `
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TCP/UDP 135-139 (dcom and netbios)
/ |: V; w; T+ S- K3 G$ \These ports are commonly exploited by worm viruses:; g' ^5 b$ t/ l4 I2 q/ }+ l
135 Windows RPC
( z* R/ w0 z# z* r3 r& ~136 PROFILE Naming System (basically unused)$ N, x9 n0 e% r" ] k/ \
137-139 Windows NetBios4 V, j. q+ N) U4 k$ Y6 y
2 {& s; v& l. m. ITCP/UDP 445 (ms-ds)4 P8 t! R- w% }9 R6 T3 T
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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TCP/UDP 1433-1434 (ms-sql)
K. N2 |1 K; ` }' @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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