Hundred EWONs work properly with the same settings.
But 3 EWONs (EW4626A, B, EW46267) on different sites have same problem. All of them use modem connection, always online in eCatcher. Problem with sending scv files to the statistics server by FTP. Files are about 90kbytes. Sometimes and rarely the files arrive to ftp server. Basically, we get a lot errors 24007, 24008 then 24916 in the log:
“24916 DNS Unable to resolve host name (xxxx)”
I tried different DNS servers: 126.96.36.199, 188.8.131.52, etc. in the EWON settings, but it did not help.
Security parameter is set - “Discard all traffic except VPN and initiated traffic (ex: EMail)” - i.e. all traffic should only via VPN.
Since all traffic must follow the VPN channel, it means that ftp file transfer is performed via the Talk2M server. Then the DNS request should come from the Talk2M server and not from EWON, right?
I don’t understand why DNS settings make sense if all traffic (including FTP) is sending via VPN to the Talk2M server? Or maybe it isn’t?
Can anybody clarify this question?
What should I do to solve DNS problem?