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之前发过一个帖子有关Telus, Shaw 的比较, ! B4 P* F$ u2 U
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。1 }! J* @. h2 K* u: {
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Does Telus block any ports? 6 N( H5 w/ |& A
+ n+ ?3 r, C" j1 z' [* _! ZThe only packages with no blocked ports at this time are the Server packages. 4 N1 f4 Q5 j6 b% {6 p6 v8 E
$ F1 |0 f5 _( G7 [ j0 z1 dThe Blocked ports currently are:( l' F B8 V! [" g! N, t
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TCP 21 (ftp)
$ A4 y9 e M9 z8 {% w$ ^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.4 s& [# W k/ B R( @7 W
) L0 f! w0 L0 K# m( D9 |TCP 25 (smtp)% [3 ^; b( A* `. o; Z
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 }4 Q. |0 d- 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.
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8 y0 X$ L. L _: G9 `* Q0 ]: J' eTCP 110 (pop3)0 R3 O6 K# t) D S8 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.! N) c* T. K+ Y8 V
9 n9 z* g& R/ }; eTCP 6667 (ircd)
( J0 M& P* Y+ z; t. B+ v! JCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.) T+ T1 ~4 j$ [9 q
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TCP/UDP 135-139 (dcom and netbios)
5 ?; F6 x" M, E0 GThese ports are commonly exploited by worm viruses:
2 U* t1 m) U+ o1 t# e$ C8 C: h6 G135 Windows RPC5 Y. x. q" m& J8 \7 {0 X
136 PROFILE Naming System (basically unused)% T5 @0 P. k1 ` {$ s
137-139 Windows NetBios! h9 e& m. z. ]) C6 | q: O8 R
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TCP/UDP 445 (ms-ds)
8 m$ ~" Q$ B6 G0 ~3 pMicrosoft 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.2 I: _" J+ ]& F. E
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TCP/UDP 1433-1434 (ms-sql)
" K2 h2 C6 |+ p/ u8 p3 nMicrosoft 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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