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之前发过一个帖子有关Telus, Shaw 的比较, / S. ~" j* t+ f+ F, l
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。7 a$ |- x; ~7 l( _2 x- M
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Does Telus block any ports?
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. ]3 D- f0 X5 f0 j5 @7 _9 V2 gThe only packages with no blocked ports at this time are the Server packages. * K0 F# K# A! }0 v7 a% T9 E/ Q
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The Blocked ports currently are:' @, p% _! f8 {
+ T6 j. r: B8 K$ |6 ZTCP 21 (ftp)
Y$ [: A3 E% K$ h* K7 nCustomers 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)8 R- C6 U+ `6 U; u; R5 Q. a
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.* `$ w/ e4 p% X- L; V7 O
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TCP 80 (www)
3 e* T% s L/ a5 U' CCustomers 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.; X+ `4 u( C/ y; a1 {( v
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TCP 110 (pop3)% y( t: E5 M2 U
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.6 X. K# u& k* c R2 F+ t
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TCP 6667 (ircd)
4 Q! m! B1 m/ s OCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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; {" ? u5 n% f/ a; L+ k1 FTCP/UDP 135-139 (dcom and netbios)# t4 E0 G5 V, R$ C" ?4 m. o
These ports are commonly exploited by worm viruses:
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136 PROFILE Naming System (basically unused)4 h% n$ U+ S. C8 W* ~; F4 r
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)5 _* m, D, E 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., y# p5 N# }' w; M* H/ u
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TCP/UDP 1433-1434 (ms-sql)
: d4 J! S4 Z+ u& e; v# `2 h) o; K! CMicrosoft 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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