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之前发过一个帖子有关Telus, Shaw 的比较, 5 s7 f9 w- ^2 e& M* Z3 v
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? % _5 p# L( Q/ N0 ?/ k+ V
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The only packages with no blocked ports at this time are the Server packages. ( K4 o5 S( ?0 b% C' ^
. k2 ]4 c1 Z# {8 [" iThe Blocked ports currently are:
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TCP 21 (ftp)9 P3 W: u# K0 p+ B9 l$ T) g
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.( K& J' D0 v9 J1 f
) E0 j' a+ T' n3 k. z2 C, r: @TCP 25 (smtp)
* |1 S* k b6 g5 r( f- z3 WCustomers 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)
8 w( C$ e/ h% F' PCustomers 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.# w7 F, Z3 Y3 |4 y* R6 \
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TCP 110 (pop3)/ W8 B1 n5 l8 C
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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" c# d& t' f, fTCP 6667 (ircd)
! a1 N) i& [- K) `2 p5 WCustomers 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)
3 F* q9 b( q" E5 Y) x& fThese ports are commonly exploited by worm viruses:( G: Q @% v, w4 ^
135 Windows RPC
H: Q a# Q7 D9 z! b& F& w' c" S136 PROFILE Naming System (basically unused)- `$ }/ n, f5 G) h/ v- t( E
137-139 Windows NetBios
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+ n: O4 r7 [# }& [TCP/UDP 445 (ms-ds)
3 v5 |3 s: R; v! }/ P! ^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.; e5 Q: Z$ U a' J6 J) p) I
# o1 O4 p+ x5 K7 m& k6 n/ x7 p0 MTCP/UDP 1433-1434 (ms-sql)
$ [9 e9 i( A' m9 V PMicrosoft 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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