Verizon Wireless LTE/4G and SIP Header Manipulation

Tue Sep 22 20:24:28 UTC 2015

On Tue, Sep 22, 2015 at 4:16 PM, Mark Stevens <manager at monmouth.com> wrote:
> The TAG unique identifier is being changed and this only happens through VZ
> LTE networks, not wired networks or even other cellular data networks
> (Sprint, ATT, T-Mobile)
> Their phones are IPV6 so the packets are getting converted to IPV4 so it is
> either happening there or there is a global ALG in Verizon land that is
> doing it .
> For positive proof I would need Verizon to fess up (LOL) but that will not
> happen or sniff traffic from the cellphone itself.

welp, interesting, good luck in your battle with the pstn.