 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较, - _3 M6 a" }) `9 m$ _! i A7 q
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。
! y/ o1 ? H& y$ i5 Y* y1 @
# z( r" n6 e& F( t0 _& T2 ~7 X7 tDoes Telus block any ports?
) y1 U) W3 v' u4 k& L" q1 `7 R, Y& @, g8 C1 m! [; @
The only packages with no blocked ports at this time are the Server packages.
: v; \& K* b- q$ W6 {% y. z
1 z4 J$ K2 P) _The Blocked ports currently are:
9 E$ s1 S% Y! [- N& f; l! J; M
TCP 21 (ftp)8 W; B9 e6 b" h1 I" @ C0 F
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.
! C( J- I6 D9 t9 Y" q* L: k; m/ q9 {
TCP 25 (smtp)8 t' l1 v/ v7 M5 J& W' ^1 v
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.5 l% S7 |0 H. H
) T% T# K2 E" G1 r" JTCP 80 (www)$ {: u. }: M% j$ ?5 x' _$ A( j5 \8 [
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.* O c6 X' R1 a: h" ]+ z2 t
1 F) j, ^% X( { z6 l* ^$ F
TCP 110 (pop3)
( f3 i$ \! K3 {/ 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.# z6 ^4 C) D+ @
3 l. o, v9 X7 ?8 }- f
TCP 6667 (ircd)
" G5 C! @+ Q$ K$ S' e/ I( o# [Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.% L" z( N2 j5 @$ t! a
! X- A/ W$ M' ?) mTCP/UDP 135-139 (dcom and netbios)4 o6 V4 J3 @9 m* T0 P) T( x
These ports are commonly exploited by worm viruses:# f, _! c0 _0 A! J: ?
135 Windows RPC
; Q* z6 }% w9 u2 Z136 PROFILE Naming System (basically unused)# \5 }" p9 e! u% A! D
137-139 Windows NetBios' ?6 N: R, L2 |. _/ Y* C& h' N
- ?6 s4 j" U x) d- [
TCP/UDP 445 (ms-ds)
3 S' x0 c2 `# v& C+ _; `$ s, FMicrosoft 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 J b; y {! X1 n1 l c$ q c' }+ }. i6 L9 c
TCP/UDP 1433-1434 (ms-sql)' s" E+ z& H6 ?* Q6 d5 K4 X
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. |
|