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Re: [Openvpn-devel] TINC and OpenVPN tunnel performance on a Windows client


  • Subject: Re: [Openvpn-devel] TINC and OpenVPN tunnel performance on a Windows client
  • From: "James Yonan" <jim@xxxxxxxxx>
  • Date: Thu, 6 Nov 2003 22:50:47 -0000

> - Generic OpenVPN settings:
> cipher bf-cbc
> dev tap
> tun-mtu 1500
> tun-mtu-extra 32
> - OpenVPN-TCP settings:
> proto tcp-client
> - OpenVPN-UDP settings:
> proto udp
> - OpenVPN-UDP-LZO settings:
> proto udp
> comp-lzo

You could improve the UDP performance of this config with two changes:

(1) Use "dev tun".

(2) Clamp the TCP MSS using the --mssfix option.  You want to use the largest
mssfix value which will not cause fragmentation.  Try 1400 or 1450.

James


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