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Poor performance for OpenVPN clients

CharlieE

I've noticed recently a degradation in download speeds for OpenVPN clients under UTM 9 (possibly since 9.4). 

My speed tests indicate that regardless of device, I'll cap out at around 2Mbps throughput when the VPN connection is active & 16-17Mbps without the VPN.  I've also tested without the UTM connected and I get VPN speeds of around 15Mbps (so pretty close to full speed). 

I've narrowed the problem to specifically my UTM, but I can't figure out where the issue is.  I've turned off Web Filtering, IPS, Network Visibility - everything I could think of to improve the speed without any results. 


Can someone suggest any other tweaks I could do?  Anyone else with this problem? 



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  • 0 in reply to sachingurung

    sachingurung said:

    Please check #7 in the Rulz.

    Hope that helps :)

    Thanks, but it didn't.  I ran through the list without any changes to performance with the VPN connected.  There is no throughput issues without the VPN which is what Rule #7 seems to be trying to fix.  

    Is there any specific advice or suggestions for poor performance on VPN traffic?  Is it something to do with logging or packet inspection on the UTM?