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之前发过一个帖子有关Telus, Shaw 的比较， - \& J% m) ~6 B# ~- f' v3 {; Y
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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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. 9 v$ Z% N9 p+ a8 j. }7 v
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The Blocked ports currently are:8 e5 ?# B$ ?7 z! o# K
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TCP 21 (ftp)
, I- z% g# l8 g6 V0 xCustomers 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.3 K; S9 j( X$ Z7 o Y7 Y# c8 \3 t8 l
- B* Q% u/ ]( G; d& ^TCP 25 (smtp)
; [6 Y, ^1 j) e z+ UCustomers 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.% C( a t6 R% T6 {! r2 B
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TCP 80 (www)0 M+ y. a# S. u7 ]) r q
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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# ?, }1 K7 K' C) {8 x5 T. z$ WTCP 110 (pop3): Y$ G* ]. ?0 i* \ q* ^
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.; x+ N8 V9 ` }! b2 V3 m
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TCP 6667 (ircd)
1 g' A- b# I$ }0 ?5 C+ LCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.. C% S* ^: b. \/ A
2 p) u( D' s& C1 H) o$ BTCP/UDP 135-139 (dcom and netbios)% w" Q( q0 U( A
These ports are commonly exploited by worm viruses:
; w( \, r/ y9 D) X0 C$ F+ \7 c2 d135 Windows RPC
+ R* N Q3 q6 `- t( z2 t5 ?0 X5 Y136 PROFILE Naming System (basically unused)3 I3 p b1 a, \& f
137-139 Windows NetBios3 h7 }# H. t5 q4 w7 ]' ]4 H
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TCP/UDP 445 (ms-ds)3 N) {% c3 B7 n$ M/ \
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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: C' H' Y% ?4 L% e7 gTCP/UDP 1433-1434 (ms-sql)
/ Q) s6 y$ W9 ^3 w; K, M7 tMicrosoft 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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发表于 2009-11-7 17:58
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