Proxy Setting | Web

It is possible to add this feature to configuration webproxy like in freepbx?

In this way we can configure webproxy to update the system in networks that only can goes to the internet in this way.

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Anyone know other solution to configure vitalpbx to goes to the Internet via proxy?

Thanks

Just to reiterate

VitalPBX has nothing in common with FreePBX other than the fact that both are using Asterisk as the B2BUA.