[SOLVED]Netgear R7500v2 OpenVPN Server QoS incompatibility

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understracker
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Joined: 28 Oct 2014
Posts: 51
PostPosted: Sun Jun 12, 2022 22:49    Post subject: [SOLVED]Netgear R7500v2 OpenVPN Server QoS incompatibility Reply with quote
When both QoS and OpenVPN server are enabled I am losing connection to the Internet (no ping) on WiFi (and on LAN probably). The PPPoE interface retains its IP address. The connection to Internet is restored if I disable either QoS or OpenVPN Server. Rebooting the router did nothing.
Router: R7500v2
DD-WRT build: r49139, r48810
Have anyone experienced the same issue?
I used egc's guide to configure OpenVPN https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
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egc
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Joined: 18 Mar 2014
Posts: 12889
Location: Netherlands
PostPosted: Mon Jun 13, 2022 10:35    Post subject: Reply with quote
A VPN server is just passively listening for a connection.

Do you mean that internet is lost by your LAN clients if the OpenVPN server is just passively listening for connections?

Or is internet lost by connected VPN clients?

Or ?
_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
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understracker
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Joined: 28 Oct 2014
Posts: 51
PostPosted: Mon Jun 13, 2022 17:13    Post subject: Reply with quote
egc wrote:
A VPN server is just passively listening for a connection.

Do you mean that internet is lost by your LAN clients if the OpenVPN server is just passively listening for connections?

Or is internet lost by connected VPN clients?

Or ?


The internet is lost by the LAN clients which is frustrating.

Thankfully I found a way to mitigate the issue by disabling remote web ui management (which I was using before enabling VPN to control the router remotely). Since VPN is now working I don't really need remote management. I can connect to web ui through VPN (which should be also safer).

To my understanding, it seems to be a firewall rules or routing issue when Remote Management, QoS and OpenVPN Server are enabled at the same time.
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understracker
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Joined: 28 Oct 2014
Posts: 51
PostPosted: Mon Jun 13, 2022 17:36    Post subject: Reply with quote
OK, I think I found the culprit. Initially I had configured OpenVPN to use "tap" mode. It was that mode that interfered with QoS. Now that I changed it to 'tun', as per the guide, the issues have vanished. Remote Management and QoS are working in conjunction with OpenVPN.
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egc
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Joined: 18 Mar 2014
Posts: 12889
Location: Netherlands
PostPosted: Mon Jun 13, 2022 18:31    Post subject: Reply with quote
Yes that makes sense Smile

Always follow the manual Wink
_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
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