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之前发过一个帖子有关Telus, Shaw 的比较,
2 W! r) ]3 V0 e7 X. l" ]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。7 x. F; T4 Z7 `2 w/ q) u. k/ h
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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. 0 ~7 t9 G; C4 A) K; z4 `) }" ?* ?
& d( B8 i% ~5 D9 rThe Blocked ports currently are:: i! Y6 [: g$ E# @* l3 E
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TCP 21 (ftp)
" T$ n0 n, G1 ?1 X) ^) G! LCustomers 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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3 m6 r8 u4 ]. ?2 Y/ [TCP 25 (smtp)
/ A6 x' Q8 C- B6 x7 y9 |3 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.+ n8 K( Q! k5 Q1 {: C- O
% Q7 B2 s3 P0 Y, X. e7 ^$ ^+ xTCP 80 (www)
: z% R( }8 `7 v2 u% rCustomers 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." F- ]2 G5 }$ D
! v/ X' M: }4 u. sTCP 110 (pop3)+ G$ l, ~+ |, P. U* K$ D
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." u/ _5 n+ ~5 l. u) Q* p ^
0 U7 J7 J1 H' a [ HTCP 6667 (ircd)
/ ~' j! A1 k& p/ _& d( g5 I; ^Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.0 z! Z+ M- a8 C2 |+ C5 T+ u
: z5 M3 R4 t1 \/ R7 ETCP/UDP 135-139 (dcom and netbios)
' y. Z+ Q" Z9 L/ S- MThese ports are commonly exploited by worm viruses:
3 l! y' z- C8 W7 [0 }135 Windows RPC3 [3 d3 k/ ~( p& y% L0 w n3 H
136 PROFILE Naming System (basically unused)% C8 N) i$ e& g9 |9 k2 n; P2 ^
137-139 Windows NetBios, S( }8 d, \3 |% v- u+ u
* o9 i% y5 E0 K# h) UTCP/UDP 445 (ms-ds)+ Y9 B* G, ]; H. f+ O
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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" ~ f& c, b& m9 j; eTCP/UDP 1433-1434 (ms-sql)
7 V$ k$ S0 P* ~) M# QMicrosoft 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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