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之前发过一个帖子有关Telus, Shaw 的比较, + {+ O+ {+ ?& z8 r: W* ]1 _
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。1 s2 }" y1 R% N1 Z& P, s d
' X+ V/ U3 d$ p! p" G. i6 z0 `Does Telus block any ports? % l# c3 j0 X5 L! L8 g- [
4 m4 Y; W7 \2 X6 l2 WThe only packages with no blocked ports at this time are the Server packages. 5 {, e, A. Z3 P1 h5 y* [# X
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The Blocked ports currently are:
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# n9 Q# p& g' ?) @, _TCP 21 (ftp)
" m6 B! e& T8 f1 k% U# k; ?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)
( m; Z T+ C9 h q: e( F9 kCustomers 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.. }3 D& N4 {9 y& C+ F' f n" e
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TCP 80 (www)
6 N: o7 b5 w: {. v/ k- ?1 ?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.* K& D9 ^3 m9 n) z3 s$ Y
3 ?4 Q$ G) o& `TCP 110 (pop3)
2 \) \, `0 w2 p9 d( K1 z( uCustomers 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 W- m7 X* F" X. L6 `/ j" wTCP 6667 (ircd)2 d) Y; h0 m* T8 z
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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" {& _1 w; A% ZTCP/UDP 135-139 (dcom and netbios)0 {" ]: l( T {* e2 q# j2 H
These ports are commonly exploited by worm viruses:* x! h- W& d1 I) _8 V* e$ [! M: S
135 Windows RPC! {; r; G T7 Y* p! A
136 PROFILE Naming System (basically unused)
5 j8 |7 Q$ ~, \) g) p5 L# W1 s9 U137-139 Windows NetBios
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" u. X. R9 w0 O8 g& ] iTCP/UDP 445 (ms-ds)
: ?6 T& v6 Q- ~& k, v, k8 W( u7 gMicrosoft 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)& V q( ]' e5 t- z1 a8 N& @
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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