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Beginner

Routing Query

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

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7 REPLIES 7
Beginner

Routing Query

Please provide your private and public ip range.Which routing protocol you are using for internal network.

Beginner

Routing Query

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.

Beginner

Routing Query

Hello Akbar,

I havent seen any public ip all above ip range mentioned are private ips.

Highlighted
Beginner

Routing Query

Hi Jeevak,

This range is used by BT cloud within Internet and is used within that.

Beginner

Routing Query

Beginner

Routing Query

In the above mentioned scnario no need to use natting.

Enthusiast

Routing Query

Hi,

These are private ip addresses:

RFC1918 nameIP address rangenumber of addressesclassful descriptionlargest CIDR block (subnet mask)host id sizemask bits
24-bit block10.0.0.0 - 10.255.255.25516,777,216single class A network10.0.0.0/8 (255.0.0.0)24 bits8 bits
20-bit block172.16.0.0 - 172.31.255.2551,048,57616 contiguous class B network172.16.0.0/12 (255.240.0.0)20 bits12 bits
16-bit block192.168.0.0 - 192.168.255.25565,536256 contiguous class C network192.168.0.0/16 (255.255.0.0)16 bits16 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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