I don't understand what this logs are trying to tell me?

Custormer says the faced with connection problem between 17,30-18,30 , anyone can help me to find the problem? 2021:12:29-17:28:31 estabil-1 pluto[32653]: id="2204" severity="info" sys="SecureNet" sub="vpn" event="Site-to-site VPN down" variant…

I wanna share the log files with a remote log server via one of my local LAN interfaces on S2S VPN, but the problem is my logs are being sent over my public IP address, how can i force Sophos to send my logs via Lan interface on S2S.