Most clients who use virtual private network (VPN) chose to use hardware firewalls to further increase the security of the internet connection. The firewall router sits between a site and the rest of the network. Firewall allows system administrators to implement a security policy in one centralized place. It is possible to create a VPN without a firewall but it’s not recommended. Because Firewalls are the gateways to secure an internal network and VPN’s are the ways to access internal Networks, It is a common practice that where there’s a VPN implemention, there’s a firewall. This is the case whether it’s a site to site or client to site VPN. A VPN without a firewall basically makes the encrypting features of the VPN useless.