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之前发过一个帖子有关Telus, Shaw 的比较,
# j7 r7 \) ?' N: _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。 S) X% ]6 v. [+ u; t, x6 Q
4 Y) D( P" q( [, i0 s6 MDoes Telus block any ports?
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8 w+ K" P Q; B& g* a/ ^6 uThe only packages with no blocked ports at this time are the Server packages. 3 l3 [- W* w* u; l. `+ E8 e: j$ c
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The Blocked ports currently are:7 s; r5 `2 I# S8 {/ f
/ L& Z; H& p- w) ~TCP 21 (ftp)
& r' R+ I, M h9 H& c1 z$ lCustomers 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. O/ I" w8 U- `) m9 A4 I
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TCP 25 (smtp)
3 ~' T" ^5 u7 b0 l& U9 ZCustomers 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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1 z6 ?8 R/ ~. V& ^3 `" YTCP 80 (www)( G, d# B2 V$ T1 W2 L6 a
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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0 c C! G* f9 f7 CTCP 110 (pop3)/ e' s$ n# O9 b# J
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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TCP 6667 (ircd)" O6 G U0 Q# O# [
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.8 c% S7 Y9 ~ Y! w) u
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TCP/UDP 135-139 (dcom and netbios)
; N0 w$ c7 {( x) v' e. [2 HThese ports are commonly exploited by worm viruses:: D- f8 g1 w1 J/ T/ s& z# d
135 Windows RPC8 V1 M1 w" M6 }# @
136 PROFILE Naming System (basically unused)2 l( ^3 L+ i2 y- y) T* p
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds): n p! ^+ A8 o; i2 n6 u( M
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.+ W6 R1 P8 P9 C9 x
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TCP/UDP 1433-1434 (ms-sql)9 c# W _6 F6 b2 w
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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