Anyone know how much upload speed is recommended to OpenVPN to personal home server? If it affects anything at all. I just realized I never research on TPG's upload speed and it's pretty close to non-existent :x
I am assuming you're saying you want to use your home broadband as the VPN server and all data route from SIMBA to your home broadband ISP before going out to the internet.
Depending on OpenVPN configuration, most connections is capped at 10Mbps or 100Mbps on both uplink and downlink.
This means that your home broadband should be fast enough for the usage, given the fact that 200-500Mbps is the basic plan for most plans now.
I would say the more important issue here is the peering between your isp and SIMBA.
If it's anything except SingTel/Whizcomms, latency should be alright. Higher than standard LTE for sure, but it's still likely to be reasonable.
However, if your broadband provider is SingNet, the latency is going to be ridiculous.
SingTel doesn't want to peer with them through SGIX, so the traffic have to route to other countries before coming back.
Combining both long distance travel means the latency will be very high, in hundreds of ms.
Also, the issue about private IP issued to home broadband, this one if you plan to set up OpenVPN etc probably should have understood.