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之前发过一个帖子有关Telus, Shaw 的比较, 7 h, v2 A! } d' m7 Y
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? . n0 m# B k- t3 j' c* Z
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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% V% l1 h; W6 ?! ^! E6 |1 STCP 21 (ftp)
! i7 v0 h& P( N! p! o( C# d( _' i+ MCustomers 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. n# h1 |4 G' L
4 M! U* w- e9 p' B7 O7 _TCP 25 (smtp)
2 h- J, e' L7 Q1 mCustomers 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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/ ]+ M: a( A/ V/ Q* v! \6 ^TCP 80 (www): k/ @( j5 A3 G I( o$ h/ B$ X
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.- Y# [# q# {+ m, l( g P' }4 |
1 e: F) ^0 s3 O& a/ ]' h5 i6 T# QTCP 110 (pop3)
+ }+ Z& b( M: `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.0 M- G; x+ _- d9 @
8 |( @& q M* ?1 D" p7 K5 \. A& XTCP 6667 (ircd)
0 [3 d a5 e5 c: @( `( R" pCustomers 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)
G. ]; c& E; _6 v$ HThese ports are commonly exploited by worm viruses:* P! C! G R* m8 r
135 Windows RPC5 J3 C4 L: f& O' p1 X7 g
136 PROFILE Naming System (basically unused). C( Q/ g8 ?) }8 ^, F; E
137-139 Windows NetBios" q& Z0 X2 i& J" b. D
/ ~' A: i) ~' ]# p. ~TCP/UDP 445 (ms-ds)7 t Z7 L4 C6 l1 N8 Z
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.
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TCP/UDP 1433-1434 (ms-sql)4 ?5 g) I) h" J6 e
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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