Sitting at the edge of the network is the SVI-DEA providing enhanced security for authorisation, authentication and subscriber policy across Diameter based LTE networks.

Network Edge Security

At the edge of the Diameter network sits the Diameter Edge Agent.

The Diameter Edge Agent's primary function is to provide network security with secure exchange of authentication, authorisation and subscriber policy.

Out of the box the SVI-DEA provides topology hiding, message normalisation, DOS and DDOS protection whilst also delivering load balancing and congestion control functionality.


  • Topology Hiding
    A security function implemented in the application layer whereby Diameter identity information from all messages leaving a local Realm are concealed.

  • Security
    Out of the box the DEA provides topology hiding, DoS and DDoS protection while delivering load balancing and congestion control.

  • Admission Control
    Full configuration in terms of protocol compliance and custom policy setup, filtering, comparison to whitelist & blacklists, throttling and message manipulation.

  • Message Screening
    All traffic into the network go via the DEA where message screening determines who enters the network and from where.

  • DoS, DDoS Protection
    The DEA protects Diameter servers and the network from overload and signalling storms brought on by DoS and DDoS attacks.

  • Transport over TLS, IPSec
    IPSec and Transport Layer Security allow for intra-realm security providing advanced encrytion between endpoints.

  • Onboard Firewall
    The Edge Agents onboard Diameter firewall protects the network and subscribers from privacy leaks and denial of service attacks.

  • Overload Protection
    Provides advanced load balancing and throttling mechanisms to insure the optimum management of the Diameter network.

  • Message Normalisation
    The DEA acts as a mediation platform ensuring normalisation of messages across the Diameter network.


  • Management and Monitoring
    Comprehensive web based SVI-MS Management system delivering on-board configuration, monitoring and debugging facilities. Full SNMP v1, 2 and 3 supports.

  • High Availability
    Carrier grade reliability supplied through comprehensive range of high availabilty options.

  • Cloud & COTS Delivery
    NFV compliant allowing delivery on a range of cloud native platforms. Can be delivered on a range of COTS server platforms either remotley or shipped from base.

  • Performance
    Highly scalable. Real-time time expansion available thorugh software license upgrades.

  • COTS Commercial Off The Shelf
    Supplied on standard Dell servers optionally with dedicated E1/T1/STM-1 support.

  • Virtual Deployment
    Virtual Machine deployed on industry standard servers in a data centre environment using a hypervisor, i.e. VMware.

  • Cloud Deployment
    Delivered as a Virtual Network Function (VNF) in AWS or OpenStack cloud infrastructure.

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