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之前发过一个帖子有关Telus, Shaw 的比较,
0 r5 r# A/ o) v6 C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。& O9 r. b) s1 y4 |9 w# M. p) @
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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. & W7 p$ V* \; N- u' H! v
- G3 I2 M' G/ e& WThe Blocked ports currently are:
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TCP 21 (ftp)
5 g4 I6 h$ J# x+ j! W; y1 tCustomers 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.9 `8 v6 n$ r* y1 Z( W# J# d
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TCP 25 (smtp)
M# W& |" _" R! J! GCustomers 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.5 Q4 h9 d: ?! m) l/ b8 h) [8 }
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TCP 80 (www)
- `) G! P! E4 E! s/ j: 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.
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! A- ?% B9 H( @. Q) n+ F R f/ L8 WTCP 110 (pop3)
- x5 a4 C( H3 d; f) U. Y# g+ S6 eCustomers 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.1 G% ]2 S$ d; b, ^
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TCP 6667 (ircd)3 Z/ ?# |2 z: ^; {7 T
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.. a$ s Z8 U7 j7 ]+ j
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TCP/UDP 135-139 (dcom and netbios)7 L' a) z) x% A0 m, T
These ports are commonly exploited by worm viruses:
4 k& ~3 I$ `, x/ M% _+ X; E135 Windows RPC
$ y. I* R1 R9 _: @/ g8 g+ [136 PROFILE Naming System (basically unused)
9 x# a8 A7 H+ {137-139 Windows NetBios
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( ?- x( ~ B/ L- x8 e" s% E8 dTCP/UDP 445 (ms-ds)
6 ^. u5 _; a" S# nMicrosoft 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.' P% v6 Y+ p# U
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TCP/UDP 1433-1434 (ms-sql)5 s+ V: a+ N- Y" ?4 `
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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