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之前发过一个帖子有关Telus, Shaw 的比较,
# T _* Q; E3 }8 f8 d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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0 o$ [% R3 I X- s7 KDoes Telus block any ports?
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" \9 r& p+ a- iThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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/ h" e5 o, }/ c/ ~) y6 @TCP 21 (ftp)! [) Y7 b1 q# d0 G
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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4 i5 p8 }& Q& v: D' U, C& j0 ?TCP 25 (smtp)
' X) c5 N0 x5 v- w7 X, o2 O& _+ HCustomers 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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r! T. ?" h/ K& j6 ]TCP 80 (www)
3 D( e" u, v6 _: ~, @4 [" i# L! o* Y) eCustomers 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.7 {9 }8 K# X5 C9 k; |. e
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TCP 110 (pop3)
& w7 b. t/ n( @1 c7 X# ]( d Y% jCustomers 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.& E2 y' g2 F) V
" h, e: |" Q5 C7 {TCP 6667 (ircd)
; c; G+ c$ `7 K; g/ ^" YCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.. \" U# v# i) ]9 M
5 ?" a% ~& q W, c% A, D% QTCP/UDP 135-139 (dcom and netbios)
5 ]) ~! f% z, h5 n" YThese ports are commonly exploited by worm viruses:' h$ ?" ? h* G/ T2 K
135 Windows RPC
) O! d. B1 o+ W! A* C( Q) p136 PROFILE Naming System (basically unused)4 r. l, A$ |1 u( s: A1 d% v
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
+ [* C; i: c9 |9 T, A. ~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.; \ D; G8 M7 X8 p. ~: X
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TCP/UDP 1433-1434 (ms-sql)9 O& J* b+ t: f* J6 o+ v1 l; Z
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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