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之前发过一个帖子有关Telus, Shaw 的比较,
1 w, V2 t- k8 ^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 F: B4 M2 l. [8 n
+ m$ D2 E9 U; r& s- b8 v4 N+ nDoes Telus block any ports? : o- X2 V" w* S
5 y, o% i; l" x# yThe only packages with no blocked ports at this time are the Server packages. # \& [7 a; r) `( b0 l4 E
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The Blocked ports currently are:/ e9 h' g' F% l$ n9 t! j2 Q
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TCP 21 (ftp)
0 u3 {7 V2 \7 C$ x/ {1 g0 U! eCustomers 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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: ^- O5 O9 f! |' s& g# s* A. c1 JTCP 25 (smtp)
( D. k& F$ s! o7 f1 T9 @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.
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TCP 80 (www)
8 g+ r* O+ V" F* 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.# m5 b, e" j* G3 _3 F' Y$ }
! K* |& s D4 r: e7 |TCP 110 (pop3)
3 M1 u; e. b, M6 q4 }9 qCustomers 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./ W# L" \. a) R
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TCP 6667 (ircd)3 _, R( P; |- k2 i, h5 W
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.' y/ C- q ?/ \! L6 F! f, n
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TCP/UDP 135-139 (dcom and netbios)
5 t7 e2 p4 P* kThese ports are commonly exploited by worm viruses:4 V1 Z8 e+ d5 Z
135 Windows RPC" S) ^0 r) Q/ @# S2 t2 i( T* b9 C- @
136 PROFILE Naming System (basically unused)
6 h8 \7 r, M0 T! v137-139 Windows NetBios
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( A" W* O* b3 x, g$ |+ tTCP/UDP 445 (ms-ds)
! m$ N9 ~: }+ z4 j9 U; S, EMicrosoft 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)0 }2 p0 {$ @2 K
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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