Connection Drop Triage

Layered troubleshooting tree

Connection Drop Triage Layered troubleshooting tree DNS resolves? · Architecture component DNS resolves? Fix DNS config · Architecture component Fix DNS config Ping the host · Architecture component Ping the host Above layer 3 · TLS, proxy, browser · Architecture component Above layer 3 TLS, proxy, browser Traceroute · Architecture component Traceroute Router and firewall · local gateway · Architecture component Router and firewall local gateway Contact ISP · ISP edge · Architecture component Contact ISP ISP edge Host blocks ICMP · destination reached · Architecture component Host blocks ICMP destination reached Adjust firewall rule · rule found · Architecture component Adjust firewall rule rule found Different network · hotspot retest · Architecture component Different network hotspot retest loss Legend Backend Cloud Security

Failure split

  • • 100 percent loss traces the layer
  • • Replies clear the lower stack