Marketplace? Maybe not for Harry and Harriet homeowner.
Paranoid? If I were simply making calls to friends and family I might agree.
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I'm an amateur when it comes to VoIP but I have a fairly good understanding of IP and my needs might be a little different than usa2k & burris'. Perhaps beyond the scope of VoIPo's mission.

The frames I’m seeing with a protocol analyzer shows my VoIPo connection uses MD5 during the SIP REGISTER and nothing for the media stream.

I’m looking for a provider which encrypts media streams and uses more robust method during the SIP REGISTER than MD5. Something which doesn’t send a uname in plain text.

I’m sure this type of service would accommodate the average person though. However, my needs are a bit greater. Issue such as- toll fraud, phone-based social engineering, identity theft and message tampering to make a few. Making financial transactions over an insecure RTP connection is not an option for me. Nor would some of the conversations in conference calls.

I do not use 2.4, 5.8 or DECT 6.0 for this reason. 2.4 and 5.8 are even less secure than my current VoIPo protocols. I noticed the use of a softphone with RTP send un-routable IP address across the public internet in plain text.

There are multiple encryption options - VPN setups, the IPSec protocol and other protocols such as SRTP (secure RTP- though it does not offer any authentication features like VPNs, it does encrypt voice packet payloads). The key however, is to choose a fast, efficient encryption algorithm and employ a dedicated encryption processor.

The IETF has defined SIPS, which uses either TLS or DTLS. only SIP-over-TLS is standardized.

SecureRTP, which does not have much of a processing overhead would resolve many of those concerns but if it’s not in your plans I’ll move on.

From what I understand encrypting across a NAT device causes problems since SIP embed layer-3 routing inside the payload.

Can the current investment in the VoIPo infrastructure (hardware, software and personnel) handle it? Do you have any plans to moving in this direction?


Tnx a lot.