Configuration changes in case we move from 4 internet lines to one single internet line ?
in Our Current scenario, We have 4 interfaces configured with 4 different Public IP address and each interface is linked to the different router( Internet),each interface has different services (Internet Email1, Email2, VPN)
We are planning to get one new internet line (Fiber line ) from a new ISP and remove the old 4 internet connection In current configuration we are using PBF for next hope and NAT
Kindly advise the changes to be done in the Palo Alto Firewall for the above scenario
Setup the new ISP on its own interface with the same zone as the other interfaces (if they are different get them onto one), then change your virtual router routing for the default routes. Change the NAT and security policies if you are hosting exernally accessible services (you mentioned email). Also change NAT and securoty policies for exeternal browsing.
That is the super high level of hwat needs to be done.
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