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之前发过一个帖子有关Telus, Shaw 的比较, & d: N0 z D: j! V( B( x l' V9 @: q, x
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?
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# s; f" |( a3 [9 C4 |* sThe only packages with no blocked ports at this time are the Server packages.
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3 a7 }6 q7 y4 R$ jThe Blocked ports currently are:
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TCP 21 (ftp)
0 \/ O/ J3 g2 `$ ?& K0 ECustomers 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)! f& O9 s/ S2 ~3 Q! h
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.6 J3 t' @8 i" q' J
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TCP 80 (www)$ K1 n& t' E2 h9 q1 m7 L
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." v v U' t8 @- K# q6 C. T
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TCP 110 (pop3)' f r0 ?" Y' v
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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1 r8 n1 P7 X# r5 n$ M& l( [ tTCP 6667 (ircd)
& N) y' m4 _! g: f/ v/ t" RCustomers 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)
# L8 _, u, \, e& yThese ports are commonly exploited by worm viruses:# I/ R1 K* X3 U5 i. ~# o
135 Windows RPC( q% h8 _" V2 e5 ~ q) Y4 f
136 PROFILE Naming System (basically unused)
, R: K5 J3 T* i7 ^4 x& C8 M137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
2 ^5 `8 g+ N- ~! |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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TCP/UDP 1433-1434 (ms-sql)
B& r' s k- f5 U& Y2 a9 r8 UMicrosoft 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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