 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较, ; r/ v/ F8 T8 v B" ]
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。
( k w/ f) M# ?+ U( i/ X1 ]6 |' [: Q Z7 A5 Z! P# q! }) B, O
Does Telus block any ports?
8 j. ?4 o: M1 R/ ~/ Q
M5 E+ ^' ?3 W4 Y2 l* F7 dThe only packages with no blocked ports at this time are the Server packages.
0 f; T4 w3 W- ^. ] }' a _. w7 ]3 g9 C
. W# i0 |6 P2 V" J8 KThe Blocked ports currently are:
+ D! r* \2 x: k: r3 K! O% J+ a4 Q3 u7 J N; s
TCP 21 (ftp)
/ z) r6 t% c5 [, TCustomers 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 q! q$ w7 \ l7 h6 G$ F- e6 c: Q) T5 B8 d+ g D
TCP 25 (smtp)1 C- n+ {% U0 Q, Y
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.
, m# g& y( ~2 e. J+ ]! t
8 F% g% a3 ?, r& V3 T% ?0 R+ hTCP 80 (www)2 `0 E3 L9 ^" V) A. Q0 g9 U- g
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.
$ u8 h& o/ y7 f
5 d( G4 \8 x6 o8 ~ g6 fTCP 110 (pop3)* o) N, R3 m" e6 S
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.
1 a4 v+ ~% Z' Z0 z/ f. y( F3 ^
) Z; a* E1 r* f# rTCP 6667 (ircd)/ L# h8 F% X9 {! C! C
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.( y- T( i# L+ z0 Y% O( m: G# m
1 ?/ h5 E. N/ J( ~+ ?& R) }
TCP/UDP 135-139 (dcom and netbios)
8 Y% w2 o# ?- Y2 E+ f$ |* qThese ports are commonly exploited by worm viruses:
+ h5 X4 y" k+ N$ H135 Windows RPC
2 L2 @9 O/ h: u' k/ q" e9 I136 PROFILE Naming System (basically unused)
% Q1 ` J+ A l137-139 Windows NetBios
, w J6 p! ]* p% w+ ?/ D1 J
* Z* s& ^7 W* K% X% M- K& dTCP/UDP 445 (ms-ds)
0 H# I8 |! {, @) H. t# ?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.
" ~4 d% ^, J. v8 C- [2 w% p Z* I, u+ Z
TCP/UDP 1433-1434 (ms-sql)+ l. X0 e" {* s) Q7 [& z
Microsoft 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. |
|