02-04-2013 08:00 AM - edited 03-04-2019 06:55 PM
Hi All,
We are in middle of merging another company with ours. All computers, printers and servers in that company are using public IP addressing, internally and externally. We are using private IP addressing internally and only public IP addressing externally. We have implemented a firewall between these networks and have tried to set up a static routes but get issues as asymetric routing.
Can someone advise if using NATing and translating the public IP used by that company into one of the private addressing ranges of our company beforing coming to our network would resolve this issue?
Thank you for your advise in advance.
Regards,
Akbar Ali Sheikh
02-04-2013 08:07 AM
Please provide your private and public ip range.Which routing protocol you are using for internal network.
02-04-2013 08:14 AM
We are using private ranges from 192.168.1.0/24 - 192.168.80.0/24 and the public are 10.201.207.0/21 where as the other company is using 10.146.64.0/18 & 10.192.95.128/25 both internally and externally.
02-04-2013 08:26 AM
Hello Akbar,
I havent seen any public ip all above ip range mentioned are private ips.
02-04-2013 08:31 AM
Hi Jeevak,
This range is used by BT cloud within Internet and is used within that.
02-04-2013 08:16 AM
Hi Akbar Ali,
You can use static NAT
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080093f31.shtml
02-04-2013 08:30 AM
In the above mentioned scnario no need to use natting.
02-04-2013 09:08 AM
Hi,
These are private ip addresses:
RFC1918 name | IP address range | number of addresses | classful description | largest CIDR block (subnet mask) | host id size | mask bits |
---|---|---|---|---|---|---|
24-bit block | 10.0.0.0 - 10.255.255.255 | 16,777,216 | single class A network | 10.0.0.0/8 (255.0.0.0) | 24 bits | 8 bits |
20-bit block | 172.16.0.0 - 172.31.255.255 | 1,048,576 | 16 contiguous class B network | 172.16.0.0/12 (255.240.0.0) | 20 bits | 12 bits |
16-bit block | 192.168.0.0 - 192.168.255.255 | 65,536 | 256 contiguous class C network | 192.168.0.0/16 (255.255.0.0) | 16 bits | 16 bits |
Are you using any routing protocol, or are you doing static routes?
You will need an edge router that will connect your Company with their Company, then advertise your routes to them and their routes to you.
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