I have a RV340 with firmware 1.0.03.20 (latest). I have succesfully set up a Client-to-Site VPN tunnel and the employees connect via Shrewsoft VPN Client. The setup is directly taken from here (https://www.cisco.com/c/en/us/support/docs/smb/routers/cisco-rv-series-small-business-routers/Configure-ShrewSoft-RV34X.html). Evereything works well, BUT: After a while the connection is lost, although the Shrewsoft client still says that it is connected. When you disconnect the client and reconnect again, the connection is established but DNS does not work anymore. RDP-connections work with IP-address but not with names. Ping does not work with names, only with IP-addresses. I can still ping our DNS-server and nslookup shows that this server ist the DNS-server.
On the RV340 I see 2 connections for the same external IP. One is only sending data, the other one is only receiving data. For a "freshly" established (and working) connection I see only one connection on the RV340.
I have this behaviour on at least 3 different client PCs (all Windows 10). Previously I had a Cisco RV042G and the Shrewsoft client worked without problems.
My questions are:
What can I do to prevent the connection from being interrupted? In the Shrewsoft client I have a Keep-alive packet rate of 15 seconds and I have Dead Peer Detection enabled.
What can I do to get DNS working after I reconnect?
The only thing that seems to help is to reboot the client PC but that is not a useful way.
Thank you!
Regards
Christian
