Re: IP change for servers
- From: "Hari" <hvmadhuna@xxxxxxxxxxx>
- Date: Tue, 29 Aug 2006 17:06:27 +0800
Mr.. Anthony,
Thank you very much for your advice.
I did change the IP after taking necessary precautions.
VPN is working fine now
Many thanks
Hari
"Anthony" <anthony.spam@xxxxxxxxxxxxxx> wrote in message
news:%23BaE5b5tGHA.5056@xxxxxxxxxxxxxxxxxxxxxxx
Well, firstly I don't think you do, and even if you did the remote sites
would not have unique address ranges so I don't know how the main site
would be able to communicate with them. For example, where would the main
site send a message to the machine at 192.168.1.2? Which site would that
go to?
But if you still wanted to change the main site, you just change each
machine in the normal way you set the IP address. You don't need safe mode
or anything. You just need to be able to get onto each machine physically.
I would do it as:
Change the firewall. At this point you will no longer be able to access
the Internet.
Change the printers.
Change the DNS servers. Remember to change their own IP address, DNS
address, WINS address and gateway address. To be on the safe side you can
leave the old addresses as secondary, but in a small network I don't think
you really need to.
Change the DHCP settings.
Reset all the DHCP clients by doing an ipconfig /release ipconfig /renew
at the command prompt. You can get round this by shortening the lease
period to something very short, then letting them expire, then letting
them renew, but you would need to plan all that well in advance
Anthony
"Hari" <hvmadhuna@xxxxxxxxxxx> wrote in message
news:OdYJAz4tGHA.1504@xxxxxxxxxxxxxxxxxxxxxxx
hi Mr Anthony,
Thank you very much for your advice, I need to change the office IP
range, so I have attached a list of the address I need to change, I hope,
Iam not missing on anything. Do I need to reboot the servers in safe mode
to do the changes? Pl advice how to go about it - whether do it normally
or in any specific way ?
Thank you
Regards
Hari
"Anthony" <anthony.spam@xxxxxxxxxxxxxx> wrote in message
news:%23HHCkb4tGHA.2232@xxxxxxxxxxxxxxxxxxxxxxx
If I understand you corerctly, you simply need to give each home site a
unique range of internal addresses, so 192.168.10.0
192.168.11.0
192.168.12.0
etc.
You don't need to change your office network at all.
Possibly what has caused the problem is that the routers come with a
default
address on 192.168.1.1. This is a default and when you set up your Wide
Area
Network you need to change it to a unique address range for each site,
as
they can't be the same.
If you also want to change your office network range, then its not
difficult
but you will have a lot more to change:
- Address of the DC
- Address of the Ethernet interface of the router or firewall
- Firewall rules or access lists
- Addresses of the members servers, and their DNS server address
- Address range used in DHCP server
- Addresses of printers, wireless access points etc: anything that might
have been given a fixed address.
Its just more work.
Anthony
"Hari" <hvmadhuna@xxxxxxxxxxx> wrote in message
news:%23sITst2tGHA.3912@xxxxxxxxxxxxxxxxxxxxxxx
hi! Everyone,
My name is Hari . Someone Pl help me resolve the below issue ASAP.I
wasn't sure which group would be best to post this. Iam sorry if it's
inappropriate for some of these groups.
We have 3 HP servers running windows server 2003 R2 since 4 months
at
our office,
. 1.Domain Controller (Sgp001 - 192.168.1.10)
2.Exchange 2003 Server (Sgp002 - 192.168.1.11)
3.File Server (Sgp003 - 192.168.1.12)
The servers are assigned static IP's. The IP range Iam using is
192.168.1.x.
We have an ISP who is providing internet and VPN access. We use I-pass
(dialup) to connect to internet and use Net-screen from Juniper
networks
for
VPN connectivity. When we do VPN thru I-pass (dialup) everything is OK
and
users are able to access their Emails. But when users try VPN thru
broadband
from their residence or other places where the internal IP range is
similar
to the office 192.168.1.x then we are facing a problem.
The Net-screen software says 'successfully connected' but nothing
happens
and users are not able to access email and the file server at the
office.
When I put this issue in front of the ISP - he says I have to change
the
internal IP range to something unique because since the home and office
networks have the same IP range - VPN doesn't work. I tested VPN from
my
residence by changing my home router IP to 192.168.1.x - it did not
work,
I
then changed it back to 192.168.2.1 and I could access my file and
server and retrieve Emails. So I decided on a range (10.73.83.x) which
I
feel is unique.
I now need to change the internal IP address for my office. I have
never
done this before to any network, I don't know how the servers would
react
to
this change. They are new HP servers which have been running since 4
months
now.
Can you please assist me on how to go about this change? What are the
precautionery steps I need to take ? If you require any further info,
Pl
let
me know, as I need to resolve this issue ASAP and get VPN thru
broadband
available to users soon.
Thanks & Regards
Hari
.
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