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之前发过一个帖子有关Telus, Shaw 的比较, ! ^; c+ `- L# i9 A
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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4 i; g# g: c! Z, i! J, nDoes Telus block any ports? ; Q. F, J% X$ j+ @# u
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The only packages with no blocked ports at this time are the Server packages. 2 P& C1 O# T7 V% M8 U2 o( n
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The Blocked ports currently are:4 _" _+ F7 v9 [
+ j9 }, t9 ]' J4 Y. @: |% `TCP 21 (ftp)3 {0 x+ y2 Y& x! M c
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)
( M' L3 R+ u/ M7 `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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7 n2 e0 J* e1 J; Q6 l9 h+ A' KTCP 80 (www). v' O; x6 E( 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.
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TCP 110 (pop3)5 A1 o2 H* g1 X3 [* ], U
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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2 ]" p* c0 P; P* I" u3 PTCP 6667 (ircd)
$ F# u- g0 \! o! `5 yCustomers 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)
4 O/ z0 I; _7 U, z8 }( d6 TThese ports are commonly exploited by worm viruses:/ o2 m. U7 `# Y# T/ W
135 Windows RPC
% j- B6 D' Q3 Q' w" T- z( C `2 y1 n136 PROFILE Naming System (basically unused)
* J5 q* i2 G! p# ^$ X137-139 Windows NetBios
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9 O& c" G% ^. w& qTCP/UDP 445 (ms-ds)4 |- I( E- w2 W+ l4 _ R$ h( K
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./ J& c: \+ ~0 J- B
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TCP/UDP 1433-1434 (ms-sql)0 T) l3 s) x Y0 c; a- o% d0 `4 A
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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