Update Startup.cs (#736)

Author: PhyxionNL

src/Exceptionless.Web/Startup.cs

@@ -46,6 +46,8 @@ public void ConfigureServices(IServiceCollection services) {
             services.Configure<ForwardedHeadersOptions>(options => {
                 options.ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto;
                 options.RequireHeaderSymmetry = false;
+                options.KnownNetworks.Clear();
+                options.KnownProxies.Clear();
             });
 
             services.AddControllers(o => {