 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较, 6 B6 d X# o# B7 k4 M9 |
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。
) g) e* l" X& Z, K3 E- ?% c1 |+ Y% @' e. d6 C' {
Does Telus block any ports?
$ `: }6 R. ?9 D; |8 i: d. s9 g; m' r
4 S$ M Z/ z) j& j( Z. FThe only packages with no blocked ports at this time are the Server packages.
& H1 ]/ q6 |/ M+ y1 W- `( n& D" r# t. K8 `/ U4 ~* }
The Blocked ports currently are:/ R X/ J6 u; ?) m) x$ r
$ |- M y* C/ ^0 nTCP 21 (ftp)
' X- ]' L% g9 F$ 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.. ~; I3 i# S! M
( c/ D( `$ m* ^: B! \TCP 25 (smtp)" H( i- J- Y6 E$ a) E
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.* ]# P* w% R7 W! e) S! G0 v
]8 Q$ R* b; ?4 ]: D
TCP 80 (www); B5 s s2 Z9 D6 S# C
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.! `$ {& Z! j" v" q( m) l0 p
, o; c) i9 J( G9 z; `+ y0 e _- c) t
TCP 110 (pop3)
4 I1 S! C0 q+ W. E" KCustomers 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.+ A7 ?2 ^/ j' b" E
. o1 S$ Q; c! e; ~
TCP 6667 (ircd). d1 |. p) f7 n/ ]8 i
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.8 i" {3 l2 _/ K
`* ^ Q' ~4 F. J: [1 e' p- ?( G
TCP/UDP 135-139 (dcom and netbios)' D4 Y7 z5 R8 U! U( S/ G7 ^: z
These ports are commonly exploited by worm viruses:
/ ^3 Y/ U9 y2 V135 Windows RPC
# Q5 r* {) Q$ x6 n; c; Z136 PROFILE Naming System (basically unused)$ `0 R1 y+ f; m3 L, H$ e
137-139 Windows NetBios
+ x* ?0 z! z. N0 D+ u5 W3 q( G+ T( G
( m* V+ w. Y* l: vTCP/UDP 445 (ms-ds)
' b# ^ a4 c( W' X: BMicrosoft 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.
) k, G' z, A) R; G3 E r0 Q0 \( @2 w3 O$ {. J' V4 z! @1 S2 T
TCP/UDP 1433-1434 (ms-sql)
* K$ q/ {" {7 K$ 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. |
|