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之前发过一个帖子有关Telus, Shaw 的比较,
" l& c% Y' B9 P+ i& j6 n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。9 C4 L+ i6 d, ~: }0 h4 y. H6 R6 q
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Does Telus block any ports? o6 g% U% |4 y2 ~* d2 c6 D
$ G% t# ` @. |' QThe only packages with no blocked ports at this time are the Server packages. ' p+ p& _& a: R! p* u* M
# Y0 W$ _# x5 V& {% d2 F8 ^The Blocked ports currently are:
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TCP 21 (ftp)
; t* f1 N5 [1 v1 rCustomers 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.$ W4 w7 l; O' l4 a" `- y
3 d3 t$ N M: JTCP 25 (smtp)4 i! x- {( Y6 Z/ Z
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.
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TCP 80 (www)
) H t1 h5 `0 X# ]4 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.# ~9 [" Y& f# r$ E3 p) c! G
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TCP 110 (pop3)
' Y z9 A; Q E; W, j8 O. c* PCustomers 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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. C. o! N5 A* \+ j' MTCP 6667 (ircd)
4 V6 D& A8 Y* ~2 v1 T' WCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.! |6 e# h+ V# J. K, K
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TCP/UDP 135-139 (dcom and netbios)
0 G1 L) d$ I1 gThese ports are commonly exploited by worm viruses:
6 O& F3 u4 e9 Z* |0 c* A) E9 M135 Windows RPC
% j8 }; z- s! [136 PROFILE Naming System (basically unused)9 T) a; I0 P( [6 {. k
137-139 Windows NetBios
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8 L( ^7 C* g* Y7 V, K1 cTCP/UDP 445 (ms-ds)
9 ]! n- V6 a) G% 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.
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. ~/ h' Y* E+ C% E! L/ NTCP/UDP 1433-1434 (ms-sql)) c" G/ ?# x. n% i: x) L2 b
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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