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之前发过一个帖子有关Telus, Shaw 的比较,
, ~& p% W9 b3 }4 ~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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4 Q2 o3 D: i3 DDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. . \& Z S. @# r
% U( X8 x1 X! d2 DThe Blocked ports currently are:+ E. y% V' E6 ]! `1 p
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TCP 21 (ftp)
- R$ B, ?& s# j3 [2 MCustomers 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./ _: N3 R" w/ m. ^2 O( X
. Y' ~& t5 |/ gTCP 25 (smtp)# b# \% D# }6 H! E8 Z
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.! t! z) w" F* l) p
* g/ ]- z8 M* D6 \9 \TCP 80 (www)8 n, a$ [3 o# A8 ?# J! W2 x, 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)0 z: Q" z8 e' m0 P" O3 ~3 }# d
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.
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- [0 D; t& `6 OTCP 6667 (ircd)8 m& f! ?( N5 R" Z% m
Customers 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)
' ]. @+ L8 B- G1 G. rThese ports are commonly exploited by worm viruses:; ]9 |& w. Y4 a0 y6 p/ I
135 Windows RPC2 z( _2 Q9 |. _ l I
136 PROFILE Naming System (basically unused)4 @9 S# F% Y/ [2 _: c
137-139 Windows NetBios6 j: {9 [- z& x" S" }* U( y W
. U* u; a3 \. `TCP/UDP 445 (ms-ds)" W$ k1 [, k: j' c; c6 J8 ~9 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.* P" E9 N$ x, O5 @0 b5 ^* C
3 j) I4 v: O1 A- H( w4 ?TCP/UDP 1433-1434 (ms-sql)
" D u- E) i% k! u1 \& {# f$ X& c' 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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