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之前发过一个帖子有关Telus, Shaw 的比较, : L" w$ u3 Y, N8 \3 |
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。
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Does Telus block any ports? / i4 L' h4 a0 `4 g
% M2 o3 R! l& l( i* I. f" ?) ]The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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+ ?$ y5 Y$ J1 X1 nTCP 21 (ftp); c7 f" l# y Y' ^2 u2 G: Z
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.
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4 M# S9 {0 r1 j- i; ?, iTCP 25 (smtp)3 p5 @6 F; a# V R
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)( ^- L, W; ]) i
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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TCP 110 (pop3)
l( f! G; k7 }3 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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6 ?3 Q, t, u/ C" ]& e$ [( nTCP 6667 (ircd)+ m0 u, p2 [1 v1 F: M
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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1 b+ k6 j6 V- ~8 T$ A! e2 kTCP/UDP 135-139 (dcom and netbios)
4 U/ G+ t3 P8 ~; _These ports are commonly exploited by worm viruses:
1 w) E$ }" T; n4 l* w135 Windows RPC
3 m7 b* a% v5 g) h8 @: b' M136 PROFILE Naming System (basically unused)7 {! _3 i& F g! l2 `$ s4 U
137-139 Windows NetBios
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2 A" P1 s& m3 Y ?. N; {, |TCP/UDP 445 (ms-ds)" `* B* p3 J* X: e/ r E. X
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./ B. b' k. z! H) c4 M$ g7 S+ A
+ O( I4 _$ Z* @9 M) K( pTCP/UDP 1433-1434 (ms-sql)$ q9 l/ N+ U' E8 t
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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