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之前发过一个帖子有关Telus, Shaw 的比较, 9 I8 a4 l! C+ d/ Y1 y$ m1 U, Z: H: N
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。; \/ V2 n3 e+ d" b$ w6 Z" z/ D5 U; t5 |
3 S: e0 k' H$ K& t) L$ @2 a! A6 TDoes Telus block any ports? % Z1 U* E; M5 G. t3 v- G1 r. n
# l/ Z6 k% y4 O* xThe only packages with no blocked ports at this time are the Server packages. ' p, o& O% [0 v; O9 X# ~# @1 v
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The Blocked ports currently are:: P6 P6 n3 W9 e7 O8 R/ ~+ o
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TCP 21 (ftp)
+ a3 ]! C( \8 j+ 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.
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TCP 25 (smtp)% c% w# ^/ G: s
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.
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TCP 80 (www)4 }4 N# p' @- W2 x" u
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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: g; a' _# L9 NTCP 110 (pop3)( N' F$ ~1 [. L' i4 {: ]
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.$ O. e6 V$ ^. m* r; S$ P" V- W; e
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TCP 6667 (ircd)" w* f1 n* M: g8 p4 D
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)
" h4 r0 V7 T) r& r7 {These ports are commonly exploited by worm viruses:
! i9 _2 M0 z8 X/ Y2 ], f135 Windows RPC: v d( n9 |) a6 z
136 PROFILE Naming System (basically unused)
3 X8 a1 N" w8 T/ t8 e% B137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
- o& I% {$ u. _! U/ W5 t+ {5 aMicrosoft 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.; L' @& m- N6 ^9 c
0 ~8 @8 Y# ?7 h1 vTCP/UDP 1433-1434 (ms-sql) r: d' s: _+ k7 x* m! V
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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