ネットワークのおべんきょしませんか？ブログ:IP電話に襲いかかる“スパム”や盗聴

IP電話に襲いかかる“スパム”や盗聴(2005年06月15日)

CCNA/CCNP、テクニカルエンジニア(ネットワーク)の基礎固めのためのネットワーク技術解説サイト「ネットワークのおべんきょしませんか？」
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【緊急連載　今本当に必要なセキュリティ対策】（3）IP電話に襲いかかる“スパム”や盗聴 : IT Pro ニュース

通信コストを削減できるとして，企業を中心に普及が進むIP電話。だが，そのIP電話には，従来の電話には存在しなかったタイプのぜい弱性が指摘されている。

IP電話をウン千台、ウン万台も導入するって言う事例が増えてきています。今後もIP電話普及の流れはますます加速していきそうです。でも、普及が進めば進むほど、「スパムの標的」となる可能性が高まります。また、「盗聴」のリスクも高まってきます。

IP電話を導入するときには、スパム対策とセキュリティをきちんと考慮しないとダメですね。スパム対策は、ほとんどは通信事業者の対策に依存することになると思います。盗聴対策は各企業で音声のRTPをSRTPを利用するとか、IP電話のセグメントを分割するなど個別に対策できるので、IP電話も含めて、ネットワーク全体としてのセキュリティをもう一度見直す必要がありますね。

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