VPN Troubleshooting Tips

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VPN Troubleshooting Tips

2020-07-02T00:54:54+00:00July 2nd, 2020|VPN & Remote Access|

In this article we will provide a summary of some articles to help troubleshoot common VPN connection issues.

Troubleshooting Unstable VPN Connections2020-07-02T00:43:12+00:00

This article provides some tips to help troubleshoot VPN connections that frequently disconnect.

https://faq.draytek.com.au/2019/12/10/troubleshooting-unstable-vpn-connections/

Troubleshoot: VPN is up but no traffic2020-07-02T00:45:06+00:00

This article covers some troubleshooting tips when the VPN tunnel is online, but you cannot access the hosts on the remote network cannot accessed.

Click here for the application note or go to the URL: https://www.draytek.com/support/knowledge-base/5722

Client cannot open the router’s web interface if remote dial up VPN PPTP is used2020-07-02T00:46:21+00:00

This application note covers a scenario where the WAN MTU setting can affect connectivity and data flow over a VPN tunnel.

https://faq.draytek.com.au/2019/10/16/client-cannot-open-web-interface-if-remote-dial-up-vpn-pptp-is-used/

Other related articles are:

Unable to Access Remote Router Web Page over IPsec VPN Tunnel

https://faq.draytek.com.au/2015/08/14/unable-to-access-remote-router-web-page-over-ipsec-vpn-tunnel/

Lower VPN MSS to access the peer router’s Web UI through VPN

https://www.draytek.com/support/knowledge-base/4678

IKEv2 EAP VPN Log Analysis2020-07-02T00:47:43+00:00

This application note will help you analyse the VPN syslogs when using IKEv2 EAP for VPN connections.  It helps in understanding the IKEv2 EAP creation process and troubleshooting any issues.

Click here for the application note or go to the URL: https://faq.draytek.com.au/2020/04/20/ikev2-eap-vpn-log-analysis/

Explanations of LAN-to-LAN VPN Timeout Values2020-07-02T00:48:35+00:00

Sometimes VPN connections will drop due to inactivity for a period of time specified in the Idle Timeout setting in VPN profiles.  This article shows how to configure the Idle Timeout settings so maintain a constant VPN connection without dropping.

Click here for the application note or go to the URL:

https://faq.draytek.com.au/2019/08/30/explanations-of-lan-to-lan-vpn-timeout-values/

How to Analyse VPN IPSec Logs2020-07-02T00:48:55+00:00

Troubleshooting IPsec VPN connectivity issues can be a complex task and often requires VPN logs to be analysed.  This article uses an example to describe the process of establishing an IPsec VPN tunnel and messages displayed in the syslog.   This will help you in troubleshooting any issues.

Click here for the application note or go to the URL:

https://faq.draytek.com.au/2019/08/28/how-to-analyse-vpn-ipsec-logs/

Troubleshoot VPN Not Connecting2020-07-08T23:19:25+00:00

This article looks at some common VPN syslog messages for VPN tunnels unable to be established and explains the cause. This will assist in getting the VPN tunnels going.

Click here for the application note or go to the URL:

https://faq.draytek.com.au/troubleshooting-tips-for-vpns-not-connecting/ 

Smart VPN Troubleshooting

Troubleshooting Active Directory/LDAP server issues2020-07-02T00:51:06+00:00

Vigor Router supports using an Active Directory server or LDAP server to authenticate VPN clients or LAN clients. However, it is not easy to get the right configurations in the beginning because there are various Active Directory/LDAP servers’ structures. This document provides some tips on troubleshooting LDAP issues.

https://www.draytek.com/support/knowledge-base/5439

Solve the Can’t find VPPP adapter Error of Smart VPN Client2020-07-02T00:50:48+00:00

DrayTek Smart VPN Client software for windows requires DrayTek Virtual PPP adapter to provide the SSL VPN service. The driver should be installed during Smart VPN Client software installation; however, if you see such error while establishing the SSL VPN connection, please follow the steps to resolve it.

Click here for the application note or go to the URL:

https://www.draytek.com/support/knowledge-base/5729

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