GRE between Vyatta Core & pfSense

Vyatta:

vyatta@vyatta1-site1:~$ show configuration
interfaces {
    ethernet eth0 {
        address 192.168.1.1/24
        duplex auto
        hw-id 00:0c:29:00:a3:d7
        smp_affinity auto
        speed auto
    }
    ethernet eth1 {
        address dhcp
        duplex auto
        hw-id 00:0c:29:00:a3:e1
        smp_affinity auto
        speed auto
    }
    loopback lo {
    }
    tunnel tun0 {
        address 192.168.10.1/30
        description "GRE TUNNEL TO SITE2"
        encapsulation gre
        local-ip 10.1.1.2
        multicast enable
        remote-ip 10.2.2.3
        ttl 255
    }
}
protocols {
    ospf {
        log-adjacency-changes {
        }
        parameters {
            abr-type cisco
            rfc1583-compatibility
            router-id 2.2.2.2
        }
    }
    static {
        route 0.0.0.0/0 {
            next-hop 10.1.1.1 {
            }
        }
    }
}
service {
    nat {
        rule 1 {
            outbound-interface eth1
            source {
                address 192.168.1.0/24
            }
            type masquerade
        }
    }
 

pfSense:

 
TO DO:
Secure tunnels with IPSEC + Firewall rules on both sides
Enable dynamic routing between sites.