GRE over IPsec using MikroTik
Mikrotik-1GRE Tunnel and IP Address Configuration: MikroTik1> ip address add address=10.10.10.2/30 interface=ether1 MikroTik1> ip address add address=192.168.1.1/24 interface=ether5 MikroTik1> interface gre add name= gre-tunnel1 local-address=10.10.10.2 remote-address=10.10.10.6 MikroTik1> ip address add address=172.16.1.1/30 interface= gre-tunnel1 Mikrotik-1 Router IPSec VPN Configuration: MikroTik-1>ip ipsec peer>add address=10.10.10.6/32:500 auth-method=pre-shared-key secret=”password” generate-policy=no exchange-mode=main send-initial-contact=yes nat-traversal=no proposal-check=obey hash-algorithm=sha1 enc-algorithm=3des dh-group=modp1024 lifetime=1d…