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之前发过一个帖子有关Telus, Shaw 的比较, ' S1 _# _$ Q0 Y/ b
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。. n s- ~4 X o/ M2 i6 A
5 `" k- ?/ o7 ^( n' h+ KDoes Telus block any ports? 3 t! B$ E# e& Y* j3 R" _& D3 v9 t
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The only packages with no blocked ports at this time are the Server packages. k5 e$ Y; F1 N* r8 A
0 @; P1 Y- h5 e4 T9 SThe Blocked ports currently are:: u; O2 P. a. h& I
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TCP 21 (ftp)
( r9 r/ a* M3 ~* D' ?4 n3 H& iCustomers 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.: l, |7 y7 { w1 C; X8 W$ ?: _
3 }: [( [7 m- Z6 }TCP 25 (smtp)9 z$ X9 K% s0 ]0 n1 K. V
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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* [6 V6 w! w: G3 Y0 KTCP 80 (www)7 T3 [$ E! t7 T1 {" B3 S
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.- m. H' `1 v3 v& B
, ]# c, E8 m+ M: I- }3 @TCP 110 (pop3)4 C4 ]8 k$ C' v0 E; ?+ x! L" N% f# _
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.5 C6 H9 {$ s# w5 [+ s |
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TCP 6667 (ircd)
% `- p* q B9 S4 u$ q9 BCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.. ^# z9 J! O9 z3 X
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TCP/UDP 135-139 (dcom and netbios)
6 }, ^! }( M- q. {These ports are commonly exploited by worm viruses: I# i! `: D, w% V! E l
135 Windows RPC4 t5 [ r; O: ~/ i; A; e# }% V' Q1 s
136 PROFILE Naming System (basically unused)9 I7 A* Z: E" V$ X A
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
( H1 X+ H' p3 v: ?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.1 B& ?0 v- W) x
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TCP/UDP 1433-1434 (ms-sql)
) s0 x6 x0 a! v) i$ g* O( V9 EMicrosoft 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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