Hi All

I am very new to Linux so please bear with me

I have a running Red Hat Linux 7.2 server which is used as a web/mail server and firewall for my internal network. We are currently using a cisco router with a fixed ip address for our internet connection.

We are installing a vpn and need to change routers in our office, our service provider has supplied us with a new fortinet router and new ip addressess.

Could anyone please help me with what settings I need to change on my server in order to get it back online again, as once wee change the routers we can no longer connect to the internet.

Any help regarding this would be greatly appreciated.

Thank-you

John