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之前发过一个帖子有关Telus, Shaw 的比较, + [+ M) [# s B( G0 }8 q- p
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 O1 J: y6 u5 U
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Does Telus block any ports? 7 l( P1 e, D' G1 ]: B& `
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The only packages with no blocked ports at this time are the Server packages.
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$ ]. V( ^2 W$ y* DThe Blocked ports currently are:8 j- S! M6 T, D' |0 {) R
; ], L' r1 D2 H# YTCP 21 (ftp)
% y8 l( H. L) N& v3 E6 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.4 _! o# P* T w
& V% i& j+ n$ X& k7 fTCP 25 (smtp); {3 }2 u+ C& G! b, j
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)
3 P5 B& W8 [2 T# O a `0 p* hCustomers 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./ x5 j$ S. M8 h3 s* P9 b3 K% p
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TCP 110 (pop3); k4 ^) Y5 e t, C" j$ o+ j
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.
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4 q, r0 B o/ H5 vTCP 6667 (ircd)
( { i4 b+ V9 L( rCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server. ^! K. w( @ L- g/ E
( E6 e% `0 C# K6 ^# W6 q- u6 b+ DTCP/UDP 135-139 (dcom and netbios)% R- O b1 m2 f7 O t
These ports are commonly exploited by worm viruses:
6 f/ }+ M* t' @135 Windows RPC
, l; V* P5 }, x$ l136 PROFILE Naming System (basically unused)
" @+ G- \1 R! K/ r; I3 ?! G137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
; H( ^3 d7 z: g9 c8 jMicrosoft 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)3 J* d0 G. R' j8 ?# u. |" p: V$ 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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