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之前发过一个帖子有关Telus, Shaw 的比较, $ s/ s4 }9 v+ ~
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 f4 v' @2 H% d: W
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Does Telus block any ports? 6 J0 A& ~8 ^& w
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The only packages with no blocked ports at this time are the Server packages. 8 | B [7 o+ Y& F4 d {$ S. R
7 V- w0 F+ ?8 ^3 A& ?8 D9 QThe Blocked ports currently are:
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8 E1 G) |9 b5 [0 U+ ?TCP 21 (ftp)
& O, e: {+ [( u9 @/ f- T3 KCustomers 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.& E8 N3 g1 H0 ~: }( K
: y1 t$ |1 X+ g; _TCP 25 (smtp)' c W3 O5 T( g6 A. v3 L# m
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)0 c- }- }) D# m
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.
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: u) D4 k8 N I) d0 @' YTCP 110 (pop3)9 B: A/ \* Z2 A7 I! w* t
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.
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, g b% U2 f {/ `TCP 6667 (ircd)
4 b! }5 b' [! C- P* l4 L: A. YCustomers 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)
. c: p: X: \( QThese ports are commonly exploited by worm viruses:
+ x3 j# s' ?2 ~- y/ ^7 a135 Windows RPC
, U: J5 i8 [2 o# d4 ~: j136 PROFILE Naming System (basically unused)
' e. @( u' E! ^3 H5 ^# m, Z- O/ q137-139 Windows NetBios& D) O) F: J/ p( P0 b
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TCP/UDP 445 (ms-ds)8 q; J' G9 }# @& ?. w8 W
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.
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TCP/UDP 1433-1434 (ms-sql)
0 N& Z; W+ ?& w# \. D+ O! i5 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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