We have a network similar to the diagram shown above ,,
And we want to configure IPSEC IKv1 VPN between 2 sites . we have A cisco 4321 Router at Branch A and A Palo Alto firewall on the other end …
After doing the well known configuration provided by Cisco at
we found that we still could not form a successful a tunnel between sites ,, ..
we think that there a hope or a firewall somewhere in the WAN path blocking or filtering
the IKEv1 traffic and ICMP
so the Questino consist of two parts :-
First :- Kindly provide us with your suggestion regarding the proper an optimim configuration for the
Devices at both ends
Second :- In the WAN how could we specify the hop that filter that traffic exactly ?
We want to prove that one hop is blocking or filtering IKv1 and ICMP traffic
Then how could we find and prove that it prevents specific data traffic ?