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之前发过一个帖子有关Telus, Shaw 的比较, # \+ y: v4 P3 y. c9 z) p9 @
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。7 c, _: ]1 a0 V# o. z$ ?/ H2 {3 w
3 k' w/ U1 i, [+ d/ }$ x9 G3 x- _Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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) _6 m1 c4 [0 B: h! KTCP 21 (ftp)7 `/ {4 f- E$ W6 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.
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& X% L) r5 G9 `8 i0 }% ?4 O1 STCP 25 (smtp): \7 I7 S# R1 h' r" _0 P
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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: m$ j% a% F# m$ r6 L- S8 j. p" RTCP 80 (www)% v7 n+ ?4 f; x5 o2 m& K- 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.- b/ t3 @! z8 \" ], r" d
2 F J2 ^" J' ]0 N! F- ETCP 110 (pop3)
! ?$ F( p7 a! p& P) KCustomers 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)9 c+ X `4 J8 {; Q( i
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server., }! O1 [6 t4 B/ O8 k7 v
, ^" E( b7 }9 K6 h K+ N9 V! g. ZTCP/UDP 135-139 (dcom and netbios)" i. J$ ^3 j @6 P
These ports are commonly exploited by worm viruses:
/ r3 e+ _2 s. m" T# E$ c135 Windows RPC! ?# L6 c, l- p
136 PROFILE Naming System (basically unused)2 Q0 |6 ?" X* \2 k# e& k5 q. n, w$ w
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)2 c6 O# _# ~6 [/ x" K
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)
* ~+ U/ N9 ]8 L0 s9 X6 D6 oMicrosoft 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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