Reply To: slow openvpn links – don’t use max wan bandwidth available

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#53570

squigley
Member

I realise this is 2 years old..

I did some research into this, and apparently, unless you have pretty beefy boxes on both ends of the VPN, using LZO compression will affect the throughput a lot, and it’s better to not use it..

I also found a large increase in VPN thoughput (from 15Mbit to 30MBit) by configuring my VPN to use AES-128-CBC rather than blowfish, and utilise the VIA padlock hardware encryption in the C3 CPU in my ZS host by adding “–cipher AES-128-CBC –engine padlock” to the VPN configuration (on both ends).