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Windows 7: running on virtualbox guest os

19 Aug 2009   #1

windows 7 x64 16385
running on virtualbox guest os

I have posted this problem at Linuxquestions, but I could not get any comments.
I think this problem might need windows 7 and/or linux, so I want to post here and want to invite members' opinion on this problem.


My box is centos 5.3 x86 and host is windows 7 x64.

For installing on centos, I tried this steps.

1. set local area's ip dynamic. get
2. set centos's eth0's ip dynamic. get
3. router's dmz to of centos
4. install ddclient on centos
5. install and run xampp for linux 1.7.2
6. test

(1) at windows as host
ping - good
browse - good
browse - failed
(2) at centos ad guest
ping - good
ping - good
browse - good
browse - failed
(3) ddclient.conf is here

## ddclient configuration file
daemon=600 # check every 600 seconds
syslog=yes # log update msgs to syslog
pid=/var/run/ # record PID in file.

## Detect IP with our CheckIP server
use=web,, web-skip='IP Address'

## DynDNS username and password here
password=my PASSWORD

## Default options

## Dynamic DNS hosts
Please help for resolving this problem.

My System SpecsSystem Spec
19 Aug 2009   #2

Linux CENTOS 7 / various Windows OS'es and servers

Hi there
when you use something like dyndns ( I use no-ip but similar facilities) then the IP address you get back should be the EXTERNAL IP address as seen from OUTSIDE your router - in other words the current IP address your ISP has allocated to you when you first connect to the Internet.

It doesn't matter how many machines you have (real or virtual or a combination of both) on your INTERNAL LAN - you will only have ONE IP address as far as the rest of the Internet is concerned.

Now if you want each individual machine on your lan to act as a web server or whatever you will have to Port Forward 80 (usually but can be 8080 or whatever) to the INTERNAL IP address of the web server you want to log on to.

Since a normal Router will only forward a port to a specific IP address You will have to

1) assign INTERNAL STATIC IP addresses to your network

2) select which port to use for your web server and forward it to the appropriate machine.

(If you are running a web server on a Virtual machine ensure the HOST doesn't time out or comes up with a screen saver otherwise you won't get access to the guest VM unless you've bought the host "out of sleep mode").

Running Linux as a host is usually fine especially if you use something like vmware server for your guest VM's and your web server is on the VM. - you won't then need a GUI in the host - saves resources.

My System SpecsSystem Spec

 running on virtualbox guest os

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