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之前发过一个帖子有关Telus, Shaw 的比较,
2 Y3 u9 S* G( D& 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。: d! R$ |7 x L' O6 R: u
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Does Telus block any ports? 7 q$ v& Y0 _7 ?" k, n
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The only packages with no blocked ports at this time are the Server packages.
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# J* ^0 s5 n& G; S8 VThe Blocked ports currently are:
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/ Q2 x; Y- t5 Z7 H/ g; q" BTCP 21 (ftp)! B! v. Z8 D/ 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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9 n6 \& H1 Y/ kTCP 25 (smtp)
6 _1 a2 q) ` K2 Q+ NCustomers 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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+ h% O" j& L5 p. ]" u7 hTCP 80 (www)' x: @7 ~4 r4 u9 M* D
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.- S7 }7 \. p: _( w. M6 m9 k
& H3 W7 c& A, rTCP 110 (pop3)
. B' w V- N) G- @/ W- E4 qCustomers 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.: R4 d+ o) i2 ~5 j8 X& U6 R8 C
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TCP 6667 (ircd)
; Y% {# q& n8 A" Y' ~% DCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.5 x9 V) a( d2 J4 t
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TCP/UDP 135-139 (dcom and netbios)" w9 }8 c# q+ q+ J; W$ A
These ports are commonly exploited by worm viruses:
) v, N" A9 } _3 C; I135 Windows RPC
8 t% a( _9 |: K3 t! O136 PROFILE Naming System (basically unused)
9 w1 L$ R" Z' K ]9 P& i# g137-139 Windows NetBios. D) L4 w4 p# t' h
3 F9 r3 ^- S9 H" WTCP/UDP 445 (ms-ds)3 Y, w [/ I+ X7 u/ V
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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$ F# Y5 K2 }; u$ J _TCP/UDP 1433-1434 (ms-sql)' i7 j1 x( X! x% J
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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