 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较, 6 X6 q2 | o2 @3 F0 T0 i
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。0 _4 J, d- i2 T: H; }- |
( q2 E- [; k6 D# L& Q
Does Telus block any ports? + B4 a$ B$ k# i0 o
3 ~- R7 u& I0 g9 c
The only packages with no blocked ports at this time are the Server packages. 6 X$ T; G/ z, ?( X( n
6 u7 ^3 p$ y! b
The Blocked ports currently are:+ @2 r( E' `& k) N
2 \( P# U' m: F# q9 r' z" J
TCP 21 (ftp)
+ S$ ] e! W$ H3 A6 q. M- CCustomers 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.
: V5 u2 C4 a& C D1 |/ p: K1 [0 \/ B0 L' c [
TCP 25 (smtp)6 [' Q: y- y9 l( C" T$ 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. ^4 \' D4 x" d
* x" n/ @% L7 \* m; e5 V# W# n
TCP 80 (www)0 p8 V- S% K8 z; G1 W' T3 k
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.
* J; Q2 T$ {) p2 t5 w# f" r; s, ]' J$ O: ?8 M U1 e K2 i
TCP 110 (pop3)! y( X$ q8 Z# }+ e: O0 E4 o( c
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.
% }% U0 V/ W- | R% C& B
; k* k& Z: z0 x6 f% UTCP 6667 (ircd): q1 z( v7 K+ Y( `2 w) d1 i* f
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
1 `0 ~" E" U+ y* L
) _: v {' a3 I& e, C6 \TCP/UDP 135-139 (dcom and netbios)3 S; L3 A$ _! Y) z6 c" r* U
These ports are commonly exploited by worm viruses:0 I$ X v( Z2 p/ F) j
135 Windows RPC
0 o, t a; G8 t7 L- H136 PROFILE Naming System (basically unused)
: Q* [ j3 d, [2 Y1 i# Q137-139 Windows NetBios( X n I# D$ d7 F. u
0 K' ~3 t5 e- B5 X1 {TCP/UDP 445 (ms-ds)- `) x! S2 G/ G1 T8 H( W9 O( e
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.9 W2 r7 q- ^+ { W
5 L: a- H9 m3 x8 Q6 q" _) V
TCP/UDP 1433-1434 (ms-sql)
( e# n( C) L% o2 A& ~$ yMicrosoft 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. |
|