Blue Iris Asus VPN question

dtw

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Hi, thanks all for the great information shared here.

I have a BI setup that has worked for a long time with cameras at several remote locations. I have had these set up using port forwarding at the remote locations. I am in the process of updating to use VPN to access and have a question maybe someone can help with.

I have set up a VPN tunnel between the remote location Asus router (as VPN server) and the BI location router (as VPN client) using open VPN. All seems to be working well except for one thing. When I activate the VPN tunnel, the speed on my local (BI side) WAN internet connection drops considerably. Normally I have about a 75Mbps connection. With the tunnel active it drops to about 5Mbps.

Initially, I thought it was because I had left the "Client will use VPN to access" setting to "Internet and local network" on the VPN server side. Indeed, I verified (using speedtest) that the local connection was using remote WAN internet connection. The remote internet connection is ~5Mbps.

OK, no problem. Changed setting, new config file, new client profile... Now via speedtest confirmed using local internet connection but speed is still 5Mbps. Deactivate tunnel, back up to 75. Reactivate tunnel, down to 5. So, I'm stumped.

In the meantime, I have worked around by using a windows openVPN connection on the BI machine instead of on the Asus router. This seems to be working fine, but I am still puzzled.

Anyone have an idea?
 

dtw

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Local router is RTAC1900
Remote router is RTN66U

I left most of the VPN settings at default. RSU 1024 bit AES-128-CBC


Not sure if I was very clear with my question. In case not...

Remote computer:
Internet connection is slow 5Mbps
open VPN host

Local Computer:
Internet connection 75Mbps shows Local IP in whatsmyip and speedtest

when open VPN client not connected
whatsmyip/speedtest show local WAN IP and provider and 75Mbps speed

when VPN is connected everything works as expected except
whatsmyip/speedtest show local WAN IP and provider and 3Mbps speed

So everything is working fine, except connecting the VPN tunnel slows my local internet connection It should not be (and doesn't appear to be) using the remote internet connection or VPN tunnel to reach the internet, so there shouldn't be any impact on the speed.
 

NoloC

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Have you run tracert to see hops? In both scenarios.
 

SouthernYankee

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What is your up and down speed at both locations?
Who are your internet providers at both locations ?
 

civic17

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The reason I ask which model router is because I had this issue before when I had a $20 Asus router running openvpn. I switched to R7000 and have full speed. Could be the processor can not handle.
 
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I’m assuming you are using the ASUS default firmware or the MERLIN firmware that’s very similar, if so these might fix the problem:

  • In the VPN SERVER configuration screen (on RT-N66U), ensure configuration setting “Direct VPN clients to redirect traffic” that “NO” is selected.
  • On the VPN CLIENT configuration (RTAC1900) screen there is a “Redirect Internet Traffic” setting, ensure NO is selected.
 
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