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之前发过一个帖子有关Telus, Shaw 的比较，
9 a+ R0 Y! L( E/ s1 J. M9 }1 `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。* K2 }. S' Y2 E! l' |7 A- E
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Does Telus block any ports? * m, C2 A, l/ [, L9 i
% H( a! V6 [! x7 o! ~The only packages with no blocked ports at this time are the Server packages. ; G* W5 x2 C- X2 b# C
6 e F+ L# f3 X, {; M2 bThe Blocked ports currently are:0 I, l" C: [, B1 I7 Q$ [. z
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TCP 21 (ftp)
0 \/ l9 g# _& G/ sCustomers 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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! [/ m" a& T! o- c2 J9 `5 qTCP 25 (smtp). i* D* T9 O6 v! F! r- p7 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." l+ U3 [% Z5 c; K X3 R1 Q' P# s" T
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TCP 80 (www)
' T1 ?' y5 S! w7 c& U3 s- X+ M; dCustomers 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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+ {! U2 z: \2 G8 |TCP 110 (pop3)9 g8 ~; J: K& u6 J! |5 S1 D- 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.' i1 O: L9 b F4 }% r# n: R# Y
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TCP 6667 (ircd). M- C; Z& _3 x m3 s6 L5 C
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.9 N$ a# p7 V( J/ b6 Y2 a3 _9 a
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TCP/UDP 135-139 (dcom and netbios)
. r2 F* \# d# AThese ports are commonly exploited by worm viruses:1 V1 C& k- H6 @* N* @9 { b
135 Windows RPC8 N2 E9 Q+ S/ V2 w9 Y0 u+ I
136 PROFILE Naming System (basically unused)
! ^9 C; H7 J: z/ @137-139 Windows NetBios( u; F& I( }1 D5 r* x
9 t! ~( G' d3 }TCP/UDP 445 (ms-ds)4 z# G6 Y; N! M& k' }
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.6 k% s! A/ C+ B' W1 Q7 r: |
+ a9 A* Z$ v( X$ X, LTCP/UDP 1433-1434 (ms-sql)1 A h& L+ s" C& j5 v6 i+ L
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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发表于 2009-11-7 17:58
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