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之前发过一个帖子有关Telus, Shaw 的比较,
* m) t8 j5 T3 j! X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。2 C; u( n4 M# Z- K: r5 d
b1 I. W+ j5 iDoes Telus block any ports? ( i4 W: T$ n$ ?. H+ N
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The only packages with no blocked ports at this time are the Server packages.
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' J9 _1 A; ^' }The Blocked ports currently are:
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/ a4 ?* ]: r; L$ eTCP 21 (ftp)& \) a" _9 K7 ?( r* l
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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TCP 25 (smtp)
1 w) d- a, L6 s. j& Z" M) {- F! RCustomers 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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+ R! d% r/ T/ V: STCP 80 (www)& H- \. w7 Y9 S% A6 {! Y* Z$ ?
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.0 b; Y) u) h6 E( \
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TCP 110 (pop3)9 N( f0 q% r; T) G1 T
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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TCP 6667 (ircd)! _; {. t: ^7 H: o# n1 ~! C' u2 s; ]
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.* g! r2 b4 ]( }( k- l
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TCP/UDP 135-139 (dcom and netbios): J( N" e4 V% g
These ports are commonly exploited by worm viruses:* H; X' @/ a8 t7 h% |
135 Windows RPC" \: p7 d* [" T) R3 h+ }
136 PROFILE Naming System (basically unused)
$ v0 Y$ G. `/ t) V% f137-139 Windows NetBios5 A8 s5 J; F! f
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TCP/UDP 445 (ms-ds)6 ]+ j* x9 X. o/ x1 R) ^6 v
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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, G) R$ [- R* nTCP/UDP 1433-1434 (ms-sql). k# C% r2 M. f/ ~7 ]1 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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