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之前发过一个帖子有关Telus, Shaw 的比较, 2 A' I$ Q( J. C' {3 N5 H
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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4 l* ^6 Y2 o2 S* oDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. - k( k: d @/ j6 T
. F+ _5 k+ S! Y* ?+ KThe Blocked ports currently are:' E# r v( j x9 Z
- ?2 |' s1 s3 g' PTCP 21 (ftp)
, [; F' C! _' v, E$ C! G2 hCustomers 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.( _- @" W( P \6 P) B+ q" I% K
- I8 u) ~! |* sTCP 25 (smtp) F) B, a. n' y: y8 A$ E& B
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)
- `( [ A6 |; L; S+ L; jCustomers 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)
! e, s& G! D5 i6 K3 U& ZCustomers 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)( k" C/ r3 P4 |7 g" M8 L* {$ H" @# R
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.8 ^: x) N( o) O$ t6 N/ Z$ d
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TCP/UDP 135-139 (dcom and netbios)
% h6 ?# Y! C% t9 O) [! A4 q9 {These ports are commonly exploited by worm viruses:
: a8 \6 a% ~) r# S5 F9 M D135 Windows RPC0 Z: K1 l7 `# J) X# t- A! z# z3 g
136 PROFILE Naming System (basically unused)
$ n/ @7 V' [5 e! z/ {6 q+ V137-139 Windows NetBios
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( \8 U/ _( `$ R5 S/ MTCP/UDP 445 (ms-ds)
- }* O: @/ x; V3 {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.& I/ n' v! s3 U+ e$ S+ m
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TCP/UDP 1433-1434 (ms-sql)
1 O W, J, f% ~2 [, r; m+ `8 NMicrosoft 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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