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之前发过一个帖子有关Telus, Shaw 的比较,
' j" r" B, d/ j2 G! I; {+ U6 \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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; \$ k4 \% }: B# c( C4 Z$ ]Does Telus block any ports? & H; ~: O K% o& t1 K; a
. e) C1 V1 o+ W7 a4 @The only packages with no blocked ports at this time are the Server packages. 4 A: {! e( y) h, t i
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The Blocked ports currently are:
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$ ]- u0 b3 d, E9 Y. M( hTCP 21 (ftp)
/ F0 p( K: z) ?7 E% bCustomers 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)
: }* u5 d3 m* dCustomers 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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/ E s3 j# }# h cTCP 80 (www)' g3 s% F; t, W; q
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)
' h* f" j: |1 FCustomers 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)
7 j& h7 t" f5 I9 `# c% X* k2 p* ZCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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+ u0 L# C ^! a% T6 b JTCP/UDP 135-139 (dcom and netbios)
, Y& |3 ]$ _4 e, f$ z; [These ports are commonly exploited by worm viruses:) g2 K* _' G: K0 M
135 Windows RPC
* m3 F* Y. R ^5 a& v$ a' M! `3 [6 l136 PROFILE Naming System (basically unused)
4 Y. J3 H. \( \ L137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
3 B# Y. s/ g% \2 i+ i! ~0 X+ X/ |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." T. E1 F+ t9 \9 A5 K
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TCP/UDP 1433-1434 (ms-sql)8 K3 v( j% @$ r- \" D1 b+ N \
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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