Solved

Replacing A Firewall. Keep the same IP for new firewall

Posted on 2013-11-09
2
360 Views
Last Modified: 2013-11-09
I am replacing an existing Fortigate firewall that is currently at 10.1.201.2. I would like the new firewall to have the same ip address as the old firewall.

Before I replaced the old firewall, I verified that I could successfully ping it from a system with the ip address of 192.168.1.100

I configured the new firewall and first connected it directly to a PC with 10.2.201.99 (same subnet) address to verify that I could reach it via ping and via the admin interface of the new firewall so I know the configuration is correct.

I added the new firewall to our network by unplugging the old firewall and connecting the new firewall to the same port on the 3560 switch.

I added the hardware mac address of the new firewall to the 3560 switch using the commands:

configure terminal
mac-address-table static 0013.7233.b6ae vlan 201 interface fastEthernet 0/1
exit

Open in new window


and verified that the mac address was added using:
show mac-address table vlan

Open in new window


(I used Wireshark and ping to verify the mac address of the new firewall).

I can not ping the new firewall at 10.1.201.2 from 192.168.1.100 like I was expecting.

I would expect that If the new firewall is configured to use the same address as the old firewall and I added a static entry for the mac address to the switch that the switch would see the firewall.

Is there anything I am missing here?

Any suggestions?
0
Comment
Question by:Blackhawk_Church
2 Comments
 
LVL 9

Accepted Solution

by:
gt2847c earned 500 total points
ID: 39636138
Does the new firewall have a route for the 192.168.1.x network?  If it does not, it may be trying to reply to your ping out the wrong interface (default route)...  You may need to add a static route to your new firewall.
0
 

Author Comment

by:Blackhawk_Church
ID: 39636273
That did the trick!! Thanks.
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article will step through configuring a SonicWALL appliance to utilize an internal DHCP server for Global VPN Client (GVC) hosts.  There are times when using an external (external to the SonicWALL) DHCP server, such as Windows Servers, isn’t pr…
Hello All, I have been training on Multicast for a while now and whenever I start the topic , I find out that my friends /  Colleagues mention that they do not know how to test Multicast Joins. As most of the multicast would be video traffic and …
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question