Please imagine when through VoIP phone call for emergency services number, but because of distributed denial of service (DoS) attack and unable to connect, or, thought it was a customer calls, but is, in fact, phishers (phisher) by way of cheating on your phone shows the customer's phone number, who can so fast reaction, can hang up the phone in time to prevent spyware or trojans to download? SonicWALL comprehensive VoIP technology can protect the network from a simple denial of service (DoS) attack, also can prevent for VoIP protocol of application layer attack,
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