Re:iOS 11 Security [pdf]
by walterbell on Saturday January 13, 2018 @07:59PM
(#16142295)
I wonder why. Storage disk encryption does not, neither does SSL. Why are VPNs using much more power on mobile?
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Re:iOS 11 Security [pdf]
by joecool1029 on Saturday January 13, 2018 @09:57PM
(#16142587)
>Why are VPNs using much more power on mobile?
It can leave connection open which prevents many cellular radio technologies from falling into lower power state.
Really depends on how optimized the cell modem is and how often keepalive packets are being sent by the VPN. Honestly, I haven't seen too much of a battery hit on ipsec VPN on the iphone SE. However, my older android phones used to get shredded on OpenVPN.
EDIT: If anyone's asking, I use the algo.sh script to deploy ipsec vpn on digitalocean (has option to enable adblocking too) https://github.com/trailofbits/algo.
Wireguard should alleviate exactly that.
It's designed to not use persistent connections, keepalives may have to be enabled in case of nat traversals though (to enable incoming packets).