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之前发过一个帖子有关Telus, Shaw 的比较,
; M0 v4 E: m" C9 }% [, u9 |9 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。" X# \, S! c8 m9 U
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Does Telus block any ports?
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' W) v, _& a/ \The 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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TCP 21 (ftp)& D K7 v. \# k' L7 A
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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TCP 25 (smtp)
: x8 _8 D" x9 b: t* j- L5 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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TCP 80 (www)
( p7 \1 Q; u: f9 I; L/ n$ g; u, xCustomers 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)6 C3 f6 o; y3 ?, L3 p2 l' q
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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) G- g1 A8 B7 _+ T2 m4 R v1 rTCP 6667 (ircd)
2 W, V+ J0 z$ dCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.4 v. j) u, J" i! y8 F. N, x
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TCP/UDP 135-139 (dcom and netbios)+ G( a& }" x4 ]& b
These ports are commonly exploited by worm viruses:) N" v. Y8 b7 H) B8 K! @+ l2 D
135 Windows RPC/ @( L# w. J s: R7 m( c. Q3 F
136 PROFILE Naming System (basically unused)! z* S5 @1 l6 e
137-139 Windows NetBios% i. J2 U2 H. h: R- G
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TCP/UDP 445 (ms-ds)
: Y7 C+ n' F; S: \1 J: y9 ?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.* S+ z0 ]' Z+ Z& J
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TCP/UDP 1433-1434 (ms-sql)' N) N1 } @8 G
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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