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之前发过一个帖子有关Telus, Shaw 的比较, # H4 d; f0 ?( O A2 D
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。. { B$ _8 T% c0 \3 s0 i: e
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Does Telus block any ports? & G4 b- |* ~, k# ~. N$ J/ V
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The only packages with no blocked ports at this time are the Server packages. 9 P5 v- A5 R) k6 Q8 V; r4 T
3 f1 Q3 U+ V( V( e" I1 d; M- l- cThe Blocked ports currently are:6 }- Y% Y5 N- w* V; [$ H
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TCP 21 (ftp); V6 W- [& F5 j4 H9 T
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* e/ q3 [$ t) ?/ j
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TCP 25 (smtp)
& A2 i0 K- J7 S8 E( xCustomers 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)
! S0 j3 c; b* l$ { 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.+ q3 u; a; {/ t7 n% o; r
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TCP 110 (pop3)+ E; Z' _; T% \" C0 @4 L* S2 s
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 k5 w( I8 V% ^0 |9 A
/ I& b' j+ F& J- _TCP 6667 (ircd)) Z4 e4 f; [7 f2 b9 j3 u8 \- x
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.* J ?1 ^2 p) V6 T# b
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TCP/UDP 135-139 (dcom and netbios)
9 |$ r9 c) ?4 u6 tThese ports are commonly exploited by worm viruses:
2 I6 @6 [+ h. j) V2 R6 g# D135 Windows RPC
% w5 I8 H5 ]$ d8 q5 A) e136 PROFILE Naming System (basically unused)1 q% R/ G' u5 _/ H
137-139 Windows NetBios }% `; T6 r) d7 a
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TCP/UDP 445 (ms-ds)# v& v u- v, t
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): i5 q5 ~ T9 h) Q; O
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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