Context: My company is on the verge of a major network improvement, we will expand our network to remote offices via radio bridges. The firewall will be handling:
- 3 mission critical networks
- 3 non mission critical networks
- 3 mission critical voip trunks
- 4 wan links
The firewall solution will be Pfsense.
Question: To achieve high availability I can't decide if it's better pfsense carp ( https://doc.pfsense.org/index.php/Configuring_pfSense_Hardware_Redundancy_(CARP) ) or virtualization (using hypervisor HA multiple host, live migration etc). Which solution will be more solid and scalable? (I read carp has some limitations)
Consider we have pressing budget constraints so the solution must minimize the costs.
Thank you in advance for your kind replies