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之前发过一个帖子有关Telus, Shaw 的比较,
" }! P; q0 c& a5 J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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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. ( f7 A# x1 W' v% m& g) j
2 x$ z3 [/ C. C/ ~: a- aThe Blocked ports currently are:
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" \- R7 Z: Z7 G6 XTCP 21 (ftp)
* ]( i. j& h3 j8 {, x0 bCustomers 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; I% }" L. Y- b- u& U: L6 KCustomers 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.- i2 p$ n; L- T3 p; S& k
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TCP 80 (www); U$ \- D, @& d" U8 q }% f2 Y3 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)
1 t' l4 c5 x% V7 LCustomers 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.9 A- |1 o2 W4 L2 z& ~; M; Q) _
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TCP 6667 (ircd)
4 w5 x) @) I' Z ~" S# ?Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.5 x) \. \6 Y( N2 V
, D0 v7 R: h6 U& `' S3 F9 pTCP/UDP 135-139 (dcom and netbios)
+ r0 K9 p% @/ ~' Q! LThese ports are commonly exploited by worm viruses:, U8 Q! y* g4 z9 ?% l0 b
135 Windows RPC
+ k$ A) B, t9 M4 p* n. c136 PROFILE Naming System (basically unused)
2 H8 f0 t) y2 k" }8 J* Z137-139 Windows NetBios/ w9 e4 |! u4 x( M/ Q% `+ v/ _
& N/ o4 o3 l; GTCP/UDP 445 (ms-ds)% w4 y$ H4 R! w0 f( J/ x
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.4 W% f7 z) F9 a: g
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TCP/UDP 1433-1434 (ms-sql)
+ S& A* |, z6 IMicrosoft 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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