i have 6 client around my country with lte connectivity (different isp), but some day ago i lost one of this , the most farthest , about 300km ....
i check the connectivity with every client with 5 ping packet every minute, but starting at 2018-10-11 00:13:43 i receive only some ping reply (10 in 2 days) ....
the client is a router with openwrt 16.01.1 installed about a mounth ago with external antenna . it run smoothly for all this time and i haven't upgraded nothing, it is in an unattended location
i don't remember the openvpn client version
today i investigate , and i see that the client is trying to connect to my server, but i obtain in the log this error
Code: Select all
TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity) TLS Error: TLS handshake failed
being the client with an lte connectivity, it has a private ip address as wan interface, and every 15 minutes if it can't connect restart the lte conectivity changing the ip address , last i put a cron task that restart the router 4 times every day
here my server config
and here the log filtered for this particular client
if it's needed i can try to search the client config backup on my office pc