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之前发过一个帖子有关Telus, Shaw 的比较,
, w1 U: U' Y, o+ F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。8 S( t6 t5 o# D
% i* o7 N& O& P1 `3 a; H0 |Does Telus block any ports? 8 r k3 x, Y+ Y7 K! ^
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The only packages with no blocked ports at this time are the Server packages. ' f$ M* C2 s- q# ~
, e1 M9 u/ r( V% ?( o+ JThe Blocked ports currently are:
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4 n' j. [, s& t& k' ]TCP 21 (ftp)2 F0 @! @! z6 y
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.1 f: |. ?% t% e7 F+ ?
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TCP 25 (smtp)
$ H9 D5 ~- J- @- `$ B4 y6 `Customers 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.9 Z& A m" S% c. p/ w8 {
- U3 G; c, d0 ZTCP 80 (www)
; c2 P! I' ]: cCustomers 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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4 i3 g- z: p4 ^4 ~& E0 }1 E5 m. gTCP 110 (pop3)
% d, z! q. D; {$ A1 J8 YCustomers 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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TCP 6667 (ircd)
' P0 [5 T1 c) Z+ Q$ ^0 MCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.7 y( d+ w4 U+ l% L
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TCP/UDP 135-139 (dcom and netbios), E' i6 L; v4 e7 m, r! K
These ports are commonly exploited by worm viruses:" V6 O2 k% H& }+ J$ n; M
135 Windows RPC1 x& ~* M( b+ E6 ^' b: m$ G
136 PROFILE Naming System (basically unused)
0 R0 h; G1 c' \& P, P2 x6 z3 r137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
4 s: P9 q" o( e3 _. P- LMicrosoft 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.- p" B9 s! {# y! f6 c; F
. i5 r% j8 b' O* g, M1 Y7 f- ?5 j& FTCP/UDP 1433-1434 (ms-sql)1 e9 ~# R1 ^* j! a @
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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