VoIP encryption recommendations
Bipin Patel
bipin at xbipin.com
Tue Feb 19 16:24:20 UTC 2019
hi,
i would like the ask the community about VoIP encryption, currently in
few middle east countries VoIP is officially blocked. The isp are so
aggressive that they use all sorts of fancy tools to block it including
skype calls, whatsapp calls etc and are very successful in doing it. So
far companies like voipswitch and recently few others have been
providing tunneling mechanisms to get over this but recently UDP
traffic is heavily filtered and they go to the extreme of checking
packet length and pattern and artificially introduce delay, jitter or
simply block it if the number of hits are high. Switching to TLS/SRTP
also doesnt help, it works with some isp but as soon as you try same
using mobile data it stops working coz they match packet length and
block based on the profile. ZRTP doesnt work coz a normal RTP streams
needs to start and then it starts encrypting it but those initial RTP
get blocked.
With lack of any more VoIP encryption protocols its almost getting
impossible to bypass block so has anyone have any ideas of any other
modern form of encryption which can be used for VoIP (btw VPN are also
blocked and more over if packet size increases then nothing works on
mobile data).
The market demand of skype replacements is also extremely high coz
skype, hangouts, whatsapp video, instagram video, viber etc etc, u name
it and its blocked.
--
Regards,
Bipin
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