Enable ipsec between machine in Private lan and a machine in public network

[ajayag]

Hi,
  I am facing tough time to see my packets flowing between ipsec configured machines encrypted. I would seek help here. Can any body help me!!

All my deployments are VM and details of these are like
Machine 1:
a.b.c.d - Private letwork (private lan with subnet given 172.16.x.x)
e.f.g.h - pfsense WAN ip (10.31.204.b)

Machine 2:
m.n.o.p - Not assigned
w.x.y.z - pfsense WAN ip (10.31.251.x)
p.q.r.s - Machine wants access of a.b.c.d - (p.q.r.s could be 10.31.251.y)

I want to see my packets flowing between p.q.r.s(10.31.251.y) and a.b.c.d are encrypted. However, my packets are not encrypted. IPSEC on both the pfsense are enabled and seems working fine.

I can see IPSEC enabled between 2 pfsense machine, after some debugging, i noticed that machine from public network is not passing thru pfsense.

Any information wanted would be supplyed. Please let me know.

Thanks,
Ajay