IP network level threats are faced by all IP applications. For the last 10 or more years the IP security industry has been building Firewalls to protect web, email and other application servers from flooding attacks, malformed packet attacks and a variety of denial-of-service threats.
No one would contemplate running a web or email server without adequate security. A VoIP system merits the same level of protection. IP network level threats have the same impact on VoIP systems as on any other IP service ranging from service degradation to loss of service and including the risk of loss of control of the system. In the VoIP world loss of control means someone else getting your calls.
Peter Cox, CTO of Borderware, will be speaking at FIRST Security Conference in Sevilla. FIRST is the premier organization and recognized global leader in incident response. For more info, visit FIRST's website at http://www.first.org.