Hi, from time to time I get several errors like TCP connection to (upstream_proxy) failed where upstream_proxy is the real name and port of the server.I'd like to investigate a bit trying to understand where the problem is... squid server ? networking ? upstream proxy server ?
Squid is 3.3.11. Upstream proxy is a commercial antimalware/url filtering server. Both are phisical (not virtual servers).
Any idea ? Thanks Francesco
