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之前发过一个帖子有关Telus, Shaw 的比较, # B6 X- t2 E$ g1 R: |
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? " I- v5 T0 Q$ K1 U9 y
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:/ v8 N: H T+ T4 z1 p
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TCP 21 (ftp)7 B9 x* {2 ~* D4 ]
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.# t, J# u) R) G
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TCP 25 (smtp)5 S, |. J3 o" U' R+ ^- u
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.# x# \3 L( L; \3 R1 N: B' w$ q
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TCP 80 (www)( c8 I& u% X ]3 r7 T& D; q$ 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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TCP 110 (pop3)
3 [% s. j. K0 q& _$ W, T/ ?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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TCP 6667 (ircd)
5 j6 u/ v$ S+ S' `" N" y# T* P/ P6 U( `# \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)
3 a$ K# O9 \8 R2 fThese ports are commonly exploited by worm viruses:
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136 PROFILE Naming System (basically unused)& F' `# f( m' P- v+ q1 R
137-139 Windows NetBios: x) L9 F! \: D6 k! G8 K' f" D
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TCP/UDP 445 (ms-ds)
0 e, ~* m( z6 ?$ f9 j' o9 sMicrosoft 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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9 j& d% x) |; A2 k: f* V: o' BTCP/UDP 1433-1434 (ms-sql)3 V5 O' s4 G! v1 y& O* t
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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