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之前发过一个帖子有关Telus, Shaw 的比较, 1 \* w! a. |0 b* r4 t0 c4 {8 q5 C" O
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。; Z% \( W+ ^: t4 K. n
+ b4 R% w$ i3 I4 @5 MDoes Telus block any ports?
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4 t. B& T; x6 a! v+ m) U9 FThe only packages with no blocked ports at this time are the Server packages. # `' k. A* M k. W# `( g
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The Blocked ports currently are:) C5 t" P0 f/ A. y N+ e3 ]0 l
& Q8 e- Y3 h8 _+ q0 r! r! P: f# xTCP 21 (ftp)3 h T" e5 l8 d
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.$ _6 Z" ^3 L2 x3 K3 D+ e! e( ^3 L
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TCP 25 (smtp)# b5 S1 Q$ V7 `4 p% B5 x
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)
! w5 \4 y7 K9 J9 H0 WCustomers 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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% D8 i2 ^2 `7 `: w5 z& E" e( U- DTCP 110 (pop3)
6 D- }, }/ d' ~7 CCustomers 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.* A. k+ ~3 l+ l6 K' ?9 ?
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TCP 6667 (ircd)
4 [! }5 B; [0 r4 X; |- NCustomers 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)! O7 m0 r& i/ [# E
These ports are commonly exploited by worm viruses:
$ N6 I6 ]! C; d: u+ v135 Windows RPC& I8 d' h6 w; J: ?9 I4 u( |
136 PROFILE Naming System (basically unused); f2 n1 s# D+ K. G
137-139 Windows NetBios5 v" P) T: K1 B, W
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TCP/UDP 445 (ms-ds)- x6 j# X; Z, P
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.1 A" I+ E e! h/ [2 R8 Z8 [
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TCP/UDP 1433-1434 (ms-sql)* V$ S- z/ l( J/ K( H r3 e
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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