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之前发过一个帖子有关Telus, Shaw 的比较,
+ r9 X$ U- Z" @7 v% T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。2 a' M" ^2 Y/ F! z1 a
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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. * g- M w& f8 {4 d5 f
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The Blocked ports currently are:
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& R b u) ?# x: P6 A& c; c/ l6 ]TCP 21 (ftp)8 I3 b' D9 |9 c; b- [; O: |
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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TCP 25 (smtp)! _5 ~( b% e! b& C+ m" V$ X4 q
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)" E" j' _6 m) i8 @! I" h! Y
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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1 C4 ]1 o7 W" gTCP 110 (pop3)
1 `6 v8 t' \" zCustomers 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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0 o) g7 f. m' BTCP 6667 (ircd)2 r, d) ~% G$ d- W5 K1 N2 G
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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; O3 G) i* s* o4 h& I: nTCP/UDP 135-139 (dcom and netbios)
7 e1 h3 [/ \& s: ~4 \6 B- y2 TThese ports are commonly exploited by worm viruses:7 c' w- }: y, u: b) |+ p3 N
135 Windows RPC
" T6 M9 x. e+ l2 D4 s136 PROFILE Naming System (basically unused); ^) P& Q+ N! @$ o
137-139 Windows NetBios" u: b8 F8 O& |6 F
# `) K1 I/ x1 Y" y+ R2 i; ITCP/UDP 445 (ms-ds)
" r) n$ y% E5 ^" ?! u; IMicrosoft 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.4 l( P Y# L F9 _
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TCP/UDP 1433-1434 (ms-sql)" T& Z6 \. i' 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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