Specifics: Although as far as I can tell, itâ€™s not required for an endpoint to
do so, it probably would be good and add value as an extra security measure, to
confirm that the adjacent endpointâ€™s URIâ€™s address stated on the â€˜From-Path:â€™
session URI is actually coming from the host that is on the URI.
Solution directions: In order to do this, one might need to do some reverse DNS
lookups, that in case of failure shouldnâ€™t contribute to the decision of
accepting or not the incoming connection/session.