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之前发过一个帖子有关Telus, Shaw 的比较,
( |* W* u2 R/ }" e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 j }* {1 p; n, E) q
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Does Telus block any ports? . _: w/ S" d; Y) Y$ w
8 Z) `& y/ Y: P+ @9 UThe only packages with no blocked ports at this time are the Server packages.
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7 y' r6 S2 D$ s4 L- P" fThe Blocked ports currently are:& o4 B7 ?; m' X5 `
: c8 x- ?/ P6 F2 y7 r F. tTCP 21 (ftp)/ A _+ o& P' ?# w- A! ~0 Q, ]5 j% b
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./ d+ U$ E4 v/ P9 n& u T; y' n0 W
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TCP 25 (smtp)
" u* P) Y1 f! l1 r) C! z. i' i TCustomers 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)) C5 U, Z4 }) a# G C. h
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.
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* I/ w8 B/ @& V0 Z MTCP 110 (pop3)
+ t& x' l8 v( z1 A. K1 m0 BCustomers 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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' ~2 U) Z5 F2 N8 |; c6 I4 c" h/ P0 rTCP 6667 (ircd)
$ ~# I8 F1 K2 [, ?1 S5 _Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.- t) O& G* `0 A! j. v4 F
b5 F; S7 r4 Q' I; p4 fTCP/UDP 135-139 (dcom and netbios)
. W$ t' A2 Q' ? i- S& sThese ports are commonly exploited by worm viruses:
& }3 n: S2 ]4 C$ h" R135 Windows RPC
: f% G- f5 U7 v3 s3 o u0 U136 PROFILE Naming System (basically unused)
% W1 e1 z4 m" k4 U, E137-139 Windows NetBios
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TCP/UDP 445 (ms-ds): x- o( p( I' J* G2 E
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)' j6 h4 y6 r4 B0 N
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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