I have follow the guide and when i try to ping my site B from site A i only get:
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
it´s the same when i try to ping from site B to site A.
When i ping a device inside the local network on site A it´s work and the same on site B i can ping inside firewalls but not to the outside.