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之前发过一个帖子有关Telus, Shaw 的比较,
- n3 G# G/ _# y7 U+ n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? & c5 G" |4 Z" z8 D! e. [: x! m
8 r1 B8 A7 m8 r4 |The only packages with no blocked ports at this time are the Server packages. , ]4 u0 ?5 v& g5 j5 V0 A
8 d1 t% k4 Y7 H+ S/ qThe Blocked ports currently are:
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, y- }# d! |( ^7 \+ t; N. F: N: YTCP 21 (ftp); E- }- P9 j8 y% \% K: V
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.. F* m0 }( x F: t5 h$ F
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TCP 25 (smtp)
+ D' S! b! y0 BCustomers 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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TCP 80 (www)
/ O; v6 j1 M j6 i6 LCustomers 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)
c6 M/ k( @- p$ o, k; z1 {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." m7 e) b6 F5 Q4 \' M2 Z
9 y4 P! h; [. }TCP 6667 (ircd)
1 l- f/ V0 T( r2 I) x, ^: y! Q" H" x8 pCustomers 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): z# [2 u4 a9 |/ I' w
These ports are commonly exploited by worm viruses:
4 r: m9 ~8 Q: P' B7 p135 Windows RPC: N" c$ \+ [. i
136 PROFILE Naming System (basically unused)0 z4 w& V) ^% f
137-139 Windows NetBios2 q& `# ?- O* a5 z4 r
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TCP/UDP 445 (ms-ds)
( Y5 f$ A2 v& f. Y" C7 L) ?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.6 G* t1 v( [/ O1 V8 ~# |
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TCP/UDP 1433-1434 (ms-sql)
8 g. f* ~" M/ F1 h0 _0 k: MMicrosoft 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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