[asterisk-users] SIP over SSL TCP or SRTP?

[Bruce B]

Hello,

Which one of these ensures that SIP packets are sent and received in a
secure format so that users using public wifi don't allow MITM type of
attacks or others can't read the plaintext SIP packet info. VPN is not an
option. Looking for 2nd most secure to VPN.

P.S. Are both options part of the configs of Asterisk or need modules to be
selected and installed before doing the configs?

Thanks,
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