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之前发过一个帖子有关Telus, Shaw 的比较,
( \8 e2 Q- l6 V4 i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/ b# }3 e9 ?- x
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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
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" V: D9 F( N: U+ G* w% ^+ T zThe Blocked ports currently are:
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TCP 21 (ftp)/ _: \* l# s' c7 R
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.; @, T# b+ ^2 L' E8 E
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TCP 25 (smtp)
$ M4 ~, f7 K# tCustomers 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): r7 y7 S- _, r
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.4 v% z$ D2 D6 W: Q" x$ ~
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TCP 110 (pop3)) G2 v! C9 b/ V: a7 x8 ]
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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7 w( f+ v9 n3 H0 i' ZTCP 6667 (ircd)
5 W8 J/ i7 a `! p. g {9 k$ rCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.( M7 e. \- l) P% W
, `# ^: d1 p+ o0 A4 r3 J+ @/ k% YTCP/UDP 135-139 (dcom and netbios)
' b. t* }5 U9 G+ l; GThese ports are commonly exploited by worm viruses:
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136 PROFILE Naming System (basically unused)
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TCP/UDP 445 (ms-ds)( \0 O6 S# G& V8 @
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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) h5 x$ [$ o8 R/ N& KTCP/UDP 1433-1434 (ms-sql)# b8 x5 H; A8 r9 M" u# c0 V5 T
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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