DGN220V4 - Unexpected VPN LOG entries

[KeefyD]

We have several DGN220V4s runnign version 1.0.0.66 Firmware.  We have IP/VPNs set up which work fine but we are seeing strange messages "Fri, 2015-10-23 13:18:01 - [(null)] sending notification PAYLOAD_MALFORMED to 91.216.25.2:500" in amongst valid VPN log entries.

Does anyone know if this is a feature of the Netgear or have we a bigger problem ?

Thanks

[KeefyD · Accepted solution]

If it was only happening on 1 link i would ay that was the problem but this was for 13 VPNs - with 2 different models of netgear router.  I have since blocked access to the offending IP address and the errors have dissapeared.

[DarrenM]

Hello keefyD

When I did some research on this the most common awnser I found is A common cause is that the pre-shared secret is not configured correctly on both peers. that may be whats giving out that error.

DarrenM

[KeefyD · Accepted solution]

If it was only happening on 1 link i would ay that was the problem but this was for 13 VPNs - with 2 different models of netgear router.  I have since blocked access to the offending IP address and the errors have dissapeared.