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之前发过一个帖子有关Telus, Shaw 的比较,
4 B9 Y+ z" a. @$ H- [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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* ~* ~5 M5 O9 p0 f7 QDoes Telus block any ports?
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' x( p8 V! I/ ~3 @4 M8 r' @The only packages with no blocked ports at this time are the Server packages. 2 G# Q" p. E# ^# h! e: }3 x
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The Blocked ports currently are:% j8 A1 U+ ~& U) ]5 @+ f1 j
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TCP 21 (ftp)
" j# t E2 w, {9 G; kCustomers 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.* h0 @' @) L3 X" w$ o
" _8 Z& c* M- K. ETCP 25 (smtp)
! I% z/ o8 V( |5 nCustomers 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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# K: w$ |: l* g, M5 K8 u4 \TCP 80 (www)* E) u% k' h: r X" C/ w
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 |" B. Z; F0 ` i# O# o' E* K( bCustomers 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.$ \. i4 ~' T0 D4 d I# m- L
# E' C! K* G( i& x. [TCP 6667 (ircd)- a8 d7 d" G. W. m# b: X
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)
, J( O3 O; C8 h: `' SThese ports are commonly exploited by worm viruses:$ q1 o( W- ?' u/ K% o( l9 _7 |* d
135 Windows RPC8 ^7 e5 J% u! K$ w- ^
136 PROFILE Naming System (basically unused)7 }( x4 y% L2 p+ j0 m: M% }
137-139 Windows NetBios7 W0 |) {6 K+ h0 h
7 Q$ V* N; j9 S9 [- vTCP/UDP 445 (ms-ds)" D/ O0 D5 U: ~$ i0 V1 E4 h
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)- N- N' n" T \* z3 R7 u
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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