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之前发过一个帖子有关Telus, Shaw 的比较, & ]5 _3 f! l9 C7 ^5 I; Q
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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2 d0 j- C$ D$ g3 k* J4 \, QDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
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! g, Q) l+ y. NThe Blocked ports currently are:
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0 A v: g' E w6 J* J0 T' m: \TCP 21 (ftp)
: C8 p7 p. Q' z/ r8 W9 G9 Y: O2 Y+ [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.% C5 v3 P( ]/ f! W0 Q2 V7 h
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TCP 25 (smtp)
6 T+ W- F2 a5 e# ~2 _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.0 B# T$ H& ?( m
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TCP 80 (www)
4 G9 o. H3 s: i# q' o* G5 C R. fCustomers 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)7 e% w: S9 p, c- Q$ Y' k8 N
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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TCP 6667 (ircd)
2 ?8 b' ~: R8 Q" p2 n) N$ MCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.: p4 k5 i/ D7 P X( H. p/ ]
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TCP/UDP 135-139 (dcom and netbios)
% O6 g( n" K' q9 A* g% } p! VThese ports are commonly exploited by worm viruses:
2 E( d9 v& E; B E135 Windows RPC% y8 c. I9 b7 y9 z2 K
136 PROFILE Naming System (basically unused)
& @) u) i8 P, b; ]" J137-139 Windows NetBios f- ~1 Z5 ?6 C# L$ M
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TCP/UDP 445 (ms-ds)
1 n# b) _# }- W9 pMicrosoft 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.' K" M* _3 T3 ^5 h( J# u
" s3 h' S% ~ }# } gTCP/UDP 1433-1434 (ms-sql)
; _* Z' j( y& I* Q3 k( r, B2 ^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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