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之前发过一个帖子有关Telus, Shaw 的比较,
& `4 w7 ]/ T/ ~' f$ j7 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。
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8 L% Q9 e; y0 l5 X/ B# HDoes Telus block any ports? 9 |0 T, M3 s+ d
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The only packages with no blocked ports at this time are the Server packages.
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9 e( @' B3 j0 u' X- l: b5 }The Blocked ports currently are:
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TCP 21 (ftp)
& m0 l$ b& P* ]4 C sCustomers 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 D7 H2 v7 K3 O
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TCP 25 (smtp)3 z8 N5 z2 Z" T- ^0 u; e1 f
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)
6 T8 X" Y- r9 M* f6 L+ }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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TCP 110 (pop3)1 M5 e# e+ R9 T* U0 _: 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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1 N$ P9 t7 w- Q8 s6 u; Z* DTCP 6667 (ircd)* A& X7 X2 A1 o9 U! l* U9 F; |
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.. c6 N8 k6 k! l" V! k: E/ T' w& P
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TCP/UDP 135-139 (dcom and netbios)2 ?8 M3 V3 J6 h" }
These ports are commonly exploited by worm viruses:+ S" {1 b' O6 D7 i$ q5 q2 K
135 Windows RPC* Y' A1 g* n' |& I6 z
136 PROFILE Naming System (basically unused)
b7 S) ^# }0 d# j: z; I137-139 Windows NetBios2 l% S4 B2 E* \# l! A9 b! o. X8 R
6 j! }" h8 s0 W4 T& ?2 r3 JTCP/UDP 445 (ms-ds): z9 f9 W* ^, P$ w4 C7 c
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)
8 n) \/ v5 @( F) D; i! RMicrosoft 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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