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之前发过一个帖子有关Telus, Shaw 的比较, , \3 [1 T5 |" `$ H5 k& \4 n0 o: g; i
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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Does Telus block any ports? ) }. W) _# G" t9 [
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The only packages with no blocked ports at this time are the Server packages. / x3 R8 t& ?4 V
/ y0 }" k4 G: w/ p y! LThe Blocked ports currently are:
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4 s/ `6 ]3 C& ^/ GTCP 21 (ftp)1 A# X1 i9 X' @2 O3 l4 d. S
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. [) E. _6 ?4 Q; m; w
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TCP 25 (smtp)2 s" l Y/ K% s2 R$ a& J) E1 S! 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. a; h4 e |6 b# I l
1 R' S' w! K, ]8 Z: VTCP 80 (www)
, G0 S( F+ [- Q7 L/ J* NCustomers 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.% a8 E8 r& f \) ^; D/ N
9 e6 n8 y$ f! z9 l/ ATCP 110 (pop3)# y' |2 q( _. U7 N5 r
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.$ z6 V5 I$ `# [/ q" y' M
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TCP 6667 (ircd)% b9 D; O: |9 U& L
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)* `+ R$ V0 [7 t4 N9 J
These ports are commonly exploited by worm viruses:, B1 l U# V$ O" e1 S
135 Windows RPC
# [3 {, Z& V# h- W3 \136 PROFILE Naming System (basically unused)
$ E) H" _+ g+ z137-139 Windows NetBios( V3 U7 u* J+ F
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TCP/UDP 445 (ms-ds)
' w' H, Q7 T# |6 P: x/ xMicrosoft 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 u$ B# d# {) E& IMicrosoft 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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