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之前发过一个帖子有关Telus, Shaw 的比较, ! \) V ?( K& X) q2 f v* J
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, ]/ ]+ W# Z: x& m
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Does Telus block any ports?
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$ s6 o8 ]3 [2 c5 i& I5 [. _The only packages with no blocked ports at this time are the Server packages. ! H( M5 k$ k$ r
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The Blocked ports currently are:
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& B* W; W, [. }( L6 c! vTCP 21 (ftp)
& W: `. v7 A* S! u4 |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); e4 v3 Q3 c6 g; N7 b1 ?& B1 m8 t
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.% u/ G# w6 a+ e* Y
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TCP 80 (www)
) y$ `/ Q+ V+ O' v9 ZCustomers 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.) ]$ H4 u _* E" `# v' B# j6 y
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TCP 110 (pop3) K7 k( y, V; ?2 { 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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# y, `$ b, o' H+ yTCP 6667 (ircd)
4 Z2 p" o" t. ]0 n0 s2 lCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.+ v M4 z5 X0 C+ x& D: J4 ] [
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TCP/UDP 135-139 (dcom and netbios)
' ^5 |( U5 e* DThese ports are commonly exploited by worm viruses:
/ ~( W" s/ E, m; R8 i# f3 T- f135 Windows RPC. U5 q& B# Y) K# a1 q
136 PROFILE Naming System (basically unused)
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TCP/UDP 445 (ms-ds)
: ?: \6 Q- c( n' ^( J5 F5 t5 _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.& @# ]4 G/ u& H7 k* n
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TCP/UDP 1433-1434 (ms-sql)# V# p& v! c; b$ 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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