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之前发过一个帖子有关Telus, Shaw 的比较, 0 S/ p: \2 |+ P: B" 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。8 S+ _: b, ?% k. k
7 e* `' T9 ?% lDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. ' }. C; X0 |9 }( U" k$ Q
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The Blocked ports currently are:
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1 F6 y- O% A7 u7 ~. J( f# KTCP 21 (ftp)" D, A1 h; k3 O5 j/ x
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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4 u* K _& k. GTCP 25 (smtp)
4 X# s) B! e$ b/ z+ K& V& K+ z5 ^2 \7 vCustomers 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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: o7 g+ G7 z" D# s% s" pTCP 80 (www)' P7 D9 k& t* i- t9 }
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)
$ J# J7 S; B9 `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.; `0 w- U! E+ \$ ?+ s' P( z% h
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TCP 6667 (ircd)- n6 z) T# z# J5 e0 T
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); W4 K3 F$ X a' c
These ports are commonly exploited by worm viruses:$ C$ k" A* _, c" D: n: u# U
135 Windows RPC. d ?1 L$ f( b1 F! K; G$ u' ~
136 PROFILE Naming System (basically unused)+ S$ n$ z* C! x; ]5 P7 m
137-139 Windows NetBios- A% M' Y0 b! \2 M' Z
8 r2 Y" P" P0 u5 nTCP/UDP 445 (ms-ds)
, A6 Q1 y7 K7 F ^# aMicrosoft 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.6 z) B3 R' k! B0 e0 Z7 `5 X. F
$ S2 y8 B/ m5 MTCP/UDP 1433-1434 (ms-sql)$ j; ~1 @# y, q; a M
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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