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0 pointsjgalt2121y ago0 comments

VPNs drop your bandwidth speeds by 50% on average. And if tailscale has to use a relay server, instead of a direct connection, bandwidth will drop by 70-80%.

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gruez1y ago

>VPNs drop your bandwidth speeds by 50% on average

Source? Wireguard can do 1GB/s on decade old processors[1]. Even openvpn can do 258 Mb/s, which realistically can saturate the average home internet connection. Also, if we're talking about SSH connections, why does throughput matter? Why do you need 1 gigabit of bandwidth to transfer a few keystrokes a second?

[1] https://www.wireguard.com/performance/

jgalt212OP1y ago

We ran iperf on our multi-cloud and on prem network.

> Also, if we're talking about SSH connections, why does throughput matter?

scp, among other things, runs over ssh.

gruez1y ago

>scp, among other things, runs over ssh.

Ironically scp/sftp caused me more bandwidth headaches than wireguard/openvpn. I frequently experienced cases where scp/sftp would get 10% or even less of the transfer speed compared to a plain http(s) connection. Maybe it was due to packet loss, buffer size, or qos/throttling, but I wasn't able to figure out a definitive solution.

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gruez1y ago

>VPNs drop your bandwidth speeds by 50% on average

[1] https://www.wireguard.com/performance/

jgalt212OP1y ago

We ran iperf on our multi-cloud and on prem network.

> Also, if we're talking about SSH connections, why does throughput matter?

scp, among other things, runs over ssh.

gruez1y ago

>scp, among other things, runs over ssh.

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