 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较, / p9 V* ^" V4 U R% F% ]1 @( L
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。2 U2 y5 m9 ]* E' F2 ^
( d( i; `8 K: v
Does Telus block any ports? , t- ^+ l: R- M1 ~& }$ x9 t+ y! c
3 c) {& ?) F2 ?4 A. DThe only packages with no blocked ports at this time are the Server packages.
$ [" u) b# x8 C, A) e# k0 t; X1 e7 C9 m$ Q. t" ?: T
The Blocked ports currently are: [$ p* i% ~& {7 K) H
* ]- t! t% d$ R
TCP 21 (ftp)' W: g& }, L# K1 k% h: Y
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.
' {$ F1 q6 z1 X. h. C+ ~7 T4 m
\, e6 ]! [3 W3 p' A7 c5 DTCP 25 (smtp)3 M" I& ^, w' ~; E s0 d
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.4 Y' M5 @9 B$ O5 E* X
$ g5 O- `" T! z: U5 sTCP 80 (www)
( j" _' X3 g2 }' A0 QCustomers 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.
( U! i) P' s# f* a
$ ?. f$ i" N& I3 ^/ ~- NTCP 110 (pop3)& l6 W$ ^9 \5 l7 g$ V! a: ]; ]+ Y
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.2 R* u0 V; C6 d6 ~/ @, s0 i9 c
5 S* `$ X$ I8 L4 _ n. N7 U" W- gTCP 6667 (ircd)6 x& H1 X3 Y! L. d8 b
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.+ w# f' p$ X9 J; q
' q2 w1 b% g3 t' ~; A, \( t5 C4 E
TCP/UDP 135-139 (dcom and netbios)! Y) c8 [& j ~- F9 I! I: T; T* G
These ports are commonly exploited by worm viruses:4 H4 _' {2 i- m$ H& u5 |
135 Windows RPC4 S6 ^% E+ X' s+ N" t) g
136 PROFILE Naming System (basically unused)2 D5 q- l0 f) D; d/ q
137-139 Windows NetBios
1 n9 l5 u4 f' X n6 `% s0 u
7 Y( L4 Y* E/ `# H5 e. fTCP/UDP 445 (ms-ds)7 ]. l6 p0 e8 H$ ^* W9 d6 L s
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.
1 x! r/ J. m1 X) R/ {4 L+ \/ N9 b
TCP/UDP 1433-1434 (ms-sql)
+ @0 I- L; b0 DMicrosoft 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. |
|