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TP-Link ER605 OpenVPN session disconnects after 1 hour — how to increase timeout?

TP-Link ER605 OpenVPN session disconnects after 1 hour — how to increase timeout?

TP-Link ER605 OpenVPN session disconnects after 1 hour — how to increase timeout?
TP-Link ER605 OpenVPN session disconnects after 1 hour — how to increase timeout?
2025-06-10 10:41:53 - last edited a week ago
Tags: #VPN #OpenVPN #Routing #Firmware Update
Model: ER605 (TL-R605)  
Hardware Version: V2
Firmware Version: V2

Hi all,

I am using the TP-Link ER605 router and have configured OpenVPN using the built-in web UI (under VPN → OpenVPN).
I simply downloaded the .ovpn file it generates and use it to connect from my client (tried on Windows, Linux, same result).

 

Problem:
After the VPN connection is established successfully, it always gets disconnected after about 1 hour of usage — I see that the session times out.
There is no option in the web interface to control the session timeout or set keepalive or inactive values.

 

What I tried:

  • Regenerated the .ovpn file — same behavior.

  • Tested with different clients — same behavior.

  • Looked for any advanced settings under OpenVPN config — none exposed via Web UI.

  • No apparent settings in ER605 to change max session time.

 

Question:
👉 How can I configure the router to allow longer OpenVPN sessions (or unlimited duration)?
👉 Is there a hidden setting / CLI option / firmware workaround to adjust this?
👉 Has anyone else experienced this 1-hour disconnect issue with the ER605?

 

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1 Accepted Solution
Re:TP-Link ER605 OpenVPN session disconnects after 1 hour — how to increase timeout?-Solution
2 weeks ago - last edited a week ago

  @Infosec-admin do you use dual wan?

 

i got same with dual wan on my er605, if one of wan connection is enabled BUT no access to internet, in syslog every 30mins I get The online detection result of [WAN2] was offline and er605 DROPS ALL pptp and openvpn connections. every 30 mins. i dont think its a problem, just disable connection or turn off ont when dont need second connection.

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Re:TP-Link ER605 OpenVPN session disconnects after 1 hour — how to increase timeout?
2025-06-12 07:20:58 - last edited 2025-06-12 07:21:33

  @Infosec-admin 

We have no similar reports or known issues before. Assuming this might be a single case in your environment.  

The log would be useful to learn more about your issue.

Please mosaic your sensitive information. Here is a list of information considered sensitive:

1. Public IP address on your WAN if your WAN is.

2. Real MAC address of your device.

3. Your personal information including address, domain name, and credentials.

For troubleshooting purposes, when a WAN IP is needed, please leave some values visible for identification.

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#2
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Re:TP-Link ER605 OpenVPN session disconnects after 1 hour — how to increase timeout?-Solution
2 weeks ago - last edited a week ago

  @Infosec-admin do you use dual wan?

 

i got same with dual wan on my er605, if one of wan connection is enabled BUT no access to internet, in syslog every 30mins I get The online detection result of [WAN2] was offline and er605 DROPS ALL pptp and openvpn connections. every 30 mins. i dont think its a problem, just disable connection or turn off ont when dont need second connection.

Recommended Solution
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