 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较, ) X; \' ~9 x! T. @6 Q8 Y
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。' w, A5 w, p% z( O0 z# K @* n8 @
$ Q: N2 B+ u: [) O
Does Telus block any ports?
) b* p8 Y" F- \* Q! O# R
, e/ [: k: i4 S. MThe only packages with no blocked ports at this time are the Server packages. 2 l/ m1 h6 d. ~
; G( H0 y D! _5 U" }, x5 Z" e3 UThe Blocked ports currently are:# X0 J# m! n% ^
& c- z0 W6 ]; p7 kTCP 21 (ftp)
9 x8 M7 U3 R8 ^/ t! mCustomers 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.
7 l% q; o: c% O6 j3 @( }% v& X9 t% q* g7 w; `' M) l
TCP 25 (smtp)
5 s& E1 Z* X9 q+ m/ J$ 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.
+ V4 T/ v6 ]1 B! y
' u! h7 b* y3 I0 x& L2 u1 t" ITCP 80 (www)" I8 d2 q3 u8 X4 L
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.: T9 R& P7 @: @$ R7 U; f! y
# V6 \9 N$ m: S! u3 U
TCP 110 (pop3)( C( J- e% H* t8 u& e# [6 o+ {
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.8 A4 f# f/ J% ?3 a
6 Q \2 s8 H# KTCP 6667 (ircd): l7 a* C3 f" ~# i
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
# V) {9 ] ^4 R, |6 |# u1 W) }
TCP/UDP 135-139 (dcom and netbios)
6 x0 t& r( c$ X2 cThese ports are commonly exploited by worm viruses:
. Q9 G* ~3 E; \135 Windows RPC u4 e- T% [ t
136 PROFILE Naming System (basically unused)
& N8 r5 o) {" p- A4 R; U+ }137-139 Windows NetBios
* K- M, q- r+ _% w
, E4 q- f* ?' W- n. e7 STCP/UDP 445 (ms-ds)! n# v+ t$ Q4 s( I5 H- U7 i& c
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 v6 o4 H& Z9 }. L7 F4 [' w& n: W+ |0 q) C% ]
TCP/UDP 1433-1434 (ms-sql)
$ b- y2 W5 E$ Y1 a8 ~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. |
|