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之前发过一个帖子有关Telus, Shaw 的比较, & c B( G( S; J; V- c" 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。6 b- f h1 Y3 ~, b/ w& g4 q
( U& F0 M* q3 r! lDoes 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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The Blocked ports currently are:
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' n" g' h& o+ NTCP 21 (ftp)
* D9 w. ^4 i6 {: j6 \4 rCustomers 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)
1 S% N+ C6 k& v3 j6 d9 F1 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.
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TCP 80 (www)
9 z, ~, F. U" SCustomers 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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* b5 X w/ V4 T- h- S$ H; z1 dTCP 110 (pop3)
7 ]4 V+ P8 e$ q" |& tCustomers 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.' B" K7 \% w4 [! e
; m( R% K" c. N5 k/ STCP 6667 (ircd)
; A \0 K5 j% sCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.2 P& p3 C4 g& v5 w) V. j4 m
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TCP/UDP 135-139 (dcom and netbios)
$ t5 D( a* Z4 d( v) B; h* U7 LThese ports are commonly exploited by worm viruses:" X* s; }) n2 E
135 Windows RPC* s5 h* T. A( D. ~. u4 m) z9 i* E
136 PROFILE Naming System (basically unused)
+ U3 O5 B" x9 L: K137-139 Windows NetBios# ~8 r5 _" y O$ F, h
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TCP/UDP 445 (ms-ds)( I' m$ K3 g+ r/ w1 i |; s
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' u0 F+ v5 F) @: F
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TCP/UDP 1433-1434 (ms-sql): U2 k# A* m: q) b. B4 `. j
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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