set interfaces ethernet eth0 address 192.168.50.2/24
set interfaces ethernet eth1 address 192.168.10.1/24
set service ssh protocol-version 2
commit

set service nat rule 10 type masquerade
set service nat rule 10 source address 192.168.10.0/24
set service nat rule 10 outbound-interface eth0

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

set interfaces tunnel tun1
set interfaces tunnel tun1 address 192.168.111.1/30
set interfaces tunnel tun1 description "Gre Tunnel to Branch1"
set interfaces tunnel tun1 encapsulation gre
set interfaces tunnel tun1 local-ip 192.168.50.2
set interfaces tunnel tun1 remote-ip 192.168.60.2

set interfaces tunnel tun2
set interfaces tunnel tun2 address 192.168.121.1/30
set interfaces tunnel tun2 description "Gre Tunnel to Branch2"
set interfaces tunnel tun2 encapsulation gre
set interfaces tunnel tun2 local-ip 192.168.50.2
set interfaces tunnel tun2 remote-ip 192.168.70.2

set protocols ospf area 100
set protocols ospf area 100 network 192.168.10.0/24
set protocols ospf area 100 network 192.168.111.0/30
set protocols ospf area 100 network 192.168.121.0/30
set protocols ospf log-adjacency-changes
commit
save