Utilising Ubiquiti Edgerouter at the remote site, establish an IPSEC VPN to a Ubuntu 16.04 VPS server and then have all SIP traffic route over the VPN to allow 5060 traffic out of Dubai which blocks SIP on 5060.
Install IPSEC on the Ubuntu server (currently in production hosting web app)
Ensure only SIP traffic flows over VPN
lock down the entire solution so the SIP traffic can only go to one IP address our SIP service
This is a remote office in production environment with little remote support.
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Hello there, I have expertise on IPSEC VPN, Vyatta VyOS firewall, Ubuntu, asterisk server, SIP routing.. Please have a look on my profile and consider. Thanks