12.04.2008
Vyatta Configuration

set interfaces ethernet eth0 address 192.168.50.4/24
set interfaces ethernet eth1 address 192.168.40.1/24
set service ssh protocol-version 2
commit

set system host-name Branch2
set protocols static route 0.0.0.0/0 next-hop 192.168.50.1

set service nat rule 10 type masquerade
set service nat rule 10 source address 192.168.40.0/24
set service nat rule 10 outbound-interface eth0
commit

set interfaces loopback lo address 192.168.230.1/24
commit

set interfaces tunnel tun1
set interfaces tunnel tun1 address 192.168.121.2/24
set interfaces tunnel tun1 description "Gre Tunnel to HQ"
set interfaces tunnel tun1 encapsulation gre
set interfaces tunnel tun1 local-ip 192.168.230.1
set interfaces tunnel tun1 remote-ip 192.168.210.1

set vpn ipsec ipsec-interfaces interface eth0

set vpn ipsec esp-group ESP-GRE proposal 1
set vpn ipsec esp-group ESP-GRE proposal 1 encryption aes128
set vpn ipsec esp-group ESP-GRE proposal 1 hash sha1
set vpn ipsec esp-group ESP-GRE pfs
set vpn ipsec esp-group ESP-GRE lifetime 3600

set vpn ipsec site-to-site peer 192.168.50.2 authentication mode pre-shared-secret
edit vpn ipsec site-to-site peer 192.168.50.2
set authentication pre-shared-secret 67890
set ike-group IKE-GRE
set local-ip 192.168.50.4
set tunnel 1 local-subnet 192.168.230.0/24
set tunnel 1 remote-subnet 192.168.210.0/24
set tunnel 1 esp-group ESP-GRE
top
commit

set protocols ospf area 100
set protocols ospf area 100 network 192.168.40.0/24
set protocols ospf area 100 network 192.168.121.0/24
set protocols ospf log-adjacency-changes
commit
save