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之前发过一个帖子有关Telus, Shaw 的比较,
- ]6 @# z* T, M1 J# D0 G, `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。$ r$ R; d2 k/ \, n. ?( h8 x6 d4 Y
6 P0 m: d2 b+ H" b) m. C$ iDoes Telus block any ports? * v0 k; ?+ w Z: h9 h6 j
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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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TCP 21 (ftp)
% ^3 P5 E- ?! F; q& R% bCustomers 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.! _' _1 [0 w+ x7 F
9 M2 B1 Y. d5 ^& t8 UTCP 25 (smtp)
. F. C$ E P1 [# l/ r8 kCustomers 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.4 |: _. }4 i* x" n+ Y
9 k0 ?1 {# M. X6 K3 V" ~TCP 80 (www)
$ w) w$ h" U3 Z( N; |1 o1 k5 }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.0 q; S7 s9 I! N! W* K" u! S
6 v& a! e9 f2 ~% R# P8 f' `- BTCP 110 (pop3)8 a. [/ T' r# I# [8 _% W, U) h: @
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 N9 Q" T9 H9 |5 ]% ? o5 ^! u3 q& KTCP 6667 (ircd)
/ o) |3 x V# x! p! Y3 T% Z$ U* E3 \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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TCP/UDP 135-139 (dcom and netbios)
0 D* d7 P' B- U9 |6 [8 j' CThese ports are commonly exploited by worm viruses:
" J) ^! K0 z# x# d# R* a- H* U135 Windows RPC" D5 W& `6 p* P' G7 s2 m7 @ a
136 PROFILE Naming System (basically unused)
; L% _, Q+ R7 p7 V. Y4 U137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)* l; a) T9 o% n9 `# t- ^7 i7 [
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.
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TCP/UDP 1433-1434 (ms-sql)3 X' c1 V _8 d7 d8 d
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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