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之前发过一个帖子有关Telus, Shaw 的比较,
( {/ }" P* x) s" \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。! ~0 ]& c7 W/ s, @+ {, r
. U4 V3 n* A! h9 B" SDoes Telus block any ports?
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M' ^- p6 W/ s4 oThe only packages with no blocked ports at this time are the Server packages. 6 g; ^ L. I) G/ q+ w& K
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The Blocked ports currently are:6 b9 y# s3 {# P- H
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TCP 21 (ftp)1 \+ ?8 ?; A* ~5 S
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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% N" }1 _/ y" ?TCP 25 (smtp)
* }+ l: q* \- g2 Y2 G& p! zCustomers 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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8 p+ ~, G6 d* FTCP 80 (www)% {5 Y. N* D. m
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.# ~4 \ V. z6 L7 l
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TCP 110 (pop3)" R% L) e5 q! i$ H/ t# 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.% k( x3 B: s) w% y4 \( U* q
, @' ^) w* i a0 K; n$ ?TCP 6667 (ircd)
' M# m; F! ]: R/ z! F% `Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.5 D5 t( F: u% f0 d- f3 F
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TCP/UDP 135-139 (dcom and netbios), b* K7 i3 ^/ H, P, S5 \' y
These ports are commonly exploited by worm viruses:: o' ^/ s% w4 p9 R
135 Windows RPC% b8 M& s' f6 p" B3 D. S
136 PROFILE Naming System (basically unused)
6 E' X9 {% D i+ w$ J4 Q6 M- t137-139 Windows NetBios
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TCP/UDP 445 (ms-ds): m: g& T$ k% i$ V0 D, |; P3 `
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)
4 W0 ?* Q4 I- j; LMicrosoft 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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