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之前发过一个帖子有关Telus, Shaw 的比较, 6 T) t& h7 N4 ^. @
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。# w; l0 E0 i" ~& H: ~+ X
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Does Telus block any ports?
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) u3 ]2 c8 [# i: F9 B- bThe only packages with no blocked ports at this time are the Server packages.
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8 t8 d8 r( G0 ]6 aThe Blocked ports currently are: P3 n) R; J" D5 Y5 P% d& M
. F9 o3 ?% D, D7 j" F* W$ V3 }TCP 21 (ftp)9 n: c q. `' G8 o
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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1 H- _. y- R7 F% ~- f; iTCP 25 (smtp)
1 m; r' w% d5 PCustomers 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.1 Z* ?+ z2 T% n4 ]% }, z# M
- I- z6 j+ j7 l7 }1 @4 TTCP 80 (www)7 ?: Q+ G2 i4 N5 Z+ ~
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.6 p+ [2 b( d5 N9 t3 D0 ?
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TCP 110 (pop3)6 K3 l# n5 X) v& E' |
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.+ A- {5 C( y2 s J* h* F6 i" F
2 U# H% E6 f. G" y; \+ vTCP 6667 (ircd)3 Q0 Z9 G: k' R& y. f9 [7 j& _8 b
Customers 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)
8 Q& ^5 ~. Q: R7 {9 ~These ports are commonly exploited by worm viruses:
: o) X8 Q. _" H+ m135 Windows RPC
* b8 Z8 m! U; B x136 PROFILE Naming System (basically unused)
: @) l Y6 b, x$ ]( F& B7 O137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)+ n3 u2 I' I8 Q$ V/ G6 {1 V5 g. r
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.$ `" Q* r; p) d& a% O
8 v- f5 G1 x1 g& }9 a0 Y5 V% q; |TCP/UDP 1433-1434 (ms-sql)- `$ Q0 ~4 M) `' H9 M
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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