Building a Secure SIP Network

by Andrew Prokop | Arrow Systems Integration

Source: No Jitter

With the proper configuration, policies, and services, we can assure ourselves that our conversation has been secured.

For the most part, I love my job. I love sifting through Wireshark traces trying to find needles in SIP haystacks. I get excited learning about new IP communications products, and my heart practically skips a beat when I read about another SIP service climbing out of its physical shell and going virtual.

The best part of my job, however, is when I get to walk away from my PC, IP telephones, and LAN analyzers to meet with the users of unified communications technology. It doesn’t matter if it’s a regional user’s group or a series of one-on-one meetings with IT professionals. I love solving problems and helping people understand the technology that is near and dear to my heart.

With that in mind, today I thought I’d delve into one of the session topics I will be speaking on at the upcoming International Avaya User’s Group’s (IAUG) “Converge” conference in Denver, where I hope to help users solve the problem of securing a SIP network.

Building a Secure SIP Network

When you think about security in terms of SIP and VoIP, you need to consider four different areas:

  1. First, you want to protect the SIP signaling.
  2. You need to protect the media stream.
  3. You need to ensure that people are who they say they are.
  4. Lastly, you need to create a secure network edge that prevents the bad guys from sneaking into your business and compromising your VoIP network.

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