 鲜花( 87)  鸡蛋( 1)
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之前发过一个帖子有关Telus, Shaw 的比较,
" d8 z" ?1 a& l. R: D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。; o5 m3 e6 L5 _
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Does Telus block any ports? # Z+ O8 |- {) ?7 j( X; R2 b
7 l* D8 j6 ]4 k" @' i3 G1 BThe only packages with no blocked ports at this time are the Server packages. 5 Q' [: i! L5 W" l
' j. E/ v+ u1 x% f" Y- \! Z+ sThe Blocked ports currently are:
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# a6 b( o5 e7 `TCP 21 (ftp)
" g# U: ]1 p W" rCustomers 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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/ z5 @4 a9 \5 {: _TCP 25 (smtp)
, k$ k2 I s4 [) ~% ACustomers 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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# V; u; g" H# d- e9 j; ]( L$ p! ]TCP 80 (www)9 i1 ^9 T; V9 X9 p; {( K; T4 o
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)* n+ {6 |3 s% N* t9 W0 M
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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9 v) G, b# L0 F, j( b. Z5 h# rTCP 6667 (ircd)+ A7 i/ s+ l% R7 ?5 p+ c
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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- r9 g( Y9 K7 {* R" i: V) vTCP/UDP 135-139 (dcom and netbios)& e t/ z1 F; @
These ports are commonly exploited by worm viruses:5 |; [2 F; s& H G3 {8 y' w
135 Windows RPC/ _4 L4 J: O. @$ I
136 PROFILE Naming System (basically unused)
|6 D3 U9 M3 R# ?" p; z( m137-139 Windows NetBios
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' `6 P* W' r# iTCP/UDP 445 (ms-ds)
5 ]1 t* f9 Y8 k1 P+ r; {; \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)
! x& d7 @7 R* O/ E) v9 t) \# H0 _# zMicrosoft 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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