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之前发过一个帖子有关Telus, Shaw 的比较,
6 E. I- n/ q4 b. b8 T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。$ p( ?8 e a& C f
8 `! H, }& i. G. n2 S4 z" kDoes Telus block any ports? # O) a' S# K q
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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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2 t0 f- r0 p+ n+ `5 ?5 |TCP 21 (ftp)
* o0 H4 g+ V! e6 f! u/ CCustomers 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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+ V; r1 \: t" STCP 25 (smtp)
0 d% g! q7 a" K% w( Y0 lCustomers 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.- J; U+ b& k! j5 X8 e5 Y, A
5 d6 g$ S5 n. ^( S0 W1 d0 W* V4 hTCP 80 (www)1 t8 R8 d1 h1 v- m% ^9 j, E% ?
Customers 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)1 P7 Y3 y: f1 x, C" t) N( O7 i
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.! S+ d( j3 w" v
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TCP 6667 (ircd)7 s/ d2 j7 b- {1 Z
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.# `$ U8 N: p6 o8 n5 _: v
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TCP/UDP 135-139 (dcom and netbios)0 i" a* e4 D9 |, I4 f: u: H7 {& F
These ports are commonly exploited by worm viruses:
. }, ]1 F) L. T( o$ E! e135 Windows RPC( J3 M5 Z. R- e! J. O- d
136 PROFILE Naming System (basically unused)1 @. Y+ X9 ?: S5 w# J
137-139 Windows NetBios
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9 h# H0 P2 N" R+ u' X$ yTCP/UDP 445 (ms-ds)$ ~$ y# p) L7 v; L; Q: `) D
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.1 t4 q' ^! c: w# i& u( r: |# B
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TCP/UDP 1433-1434 (ms-sql)$ [* T Y0 |% ?8 L3 Y
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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