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之前发过一个帖子有关Telus, Shaw 的比较,
2 r1 [ \) M G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。* G8 B2 {* k8 [0 `% y3 {
0 Z2 E/ [$ E U1 u( s+ r: S/ d# }Does Telus block any ports? 0 x3 Q S8 Z* v* R
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The only packages with no blocked ports at this time are the Server packages. - z. T* v7 w3 A& a7 P% f
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The Blocked ports currently are:! J' g7 H/ J; O4 p+ ]% d3 e% E( C
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TCP 21 (ftp)
* O, z% N% ^5 k: BCustomers 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.# @3 u/ F E% U0 w; h
8 F# \1 D( Y& b- B sTCP 25 (smtp)
) \8 D" Z& n: ]+ p8 r0 C9 rCustomers 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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8 Q3 F4 k: ~. R" ATCP 80 (www) ?3 }( G' M. r0 }9 g" P
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.# e8 m! n) N* ?* b w9 D2 B
2 ~' A8 ^( ~( d, N+ @TCP 110 (pop3)- L! A8 @' p, L9 ]/ q) d
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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TCP 6667 (ircd)8 X: h. t y% {# A# ?; ?: Y" _) P
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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TCP/UDP 135-139 (dcom and netbios)$ y) Q; n2 d! `/ @4 p6 w8 `" T
These ports are commonly exploited by worm viruses:! j5 f7 l8 w4 L4 k- l4 \
135 Windows RPC6 j7 T! ^' m- x, C
136 PROFILE Naming System (basically unused)
( Q4 x% b& B1 l9 ~' ^/ c, K8 C137-139 Windows NetBios) b7 W8 f4 A9 w& d# W @5 _
8 \3 w; a# U/ S' b- R7 t6 HTCP/UDP 445 (ms-ds)8 w( \6 N4 s' c( @( F7 g1 L
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.0 n; ]8 I! U" f0 {
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TCP/UDP 1433-1434 (ms-sql)
) a0 L) ?% K3 J+ o$ gMicrosoft 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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