BUILD YOUR SKILLS
Networking incidents
Trace requests through service routing, DNS, firewalls, and transport failures.
Loading your progress…
0 of 6 completed
Follow the order or open any challenge. Completed timed and practice attempts both count.
- 01
A service loses all its destinations
Kubernetes · Starter · 30 min · Individual / Team
- 02
Internal connections reach a closed port
Kubernetes · Starter · 30 min · Individual / Team
- 03
A new service exists but its name stays missing
CoreDNS · Intermediate · 1 hr · Individual / Team
- 04
Internal name resolution repeatedly crashes
CoreDNS · Intermediate · 1 hr · Individual / Team
- 05
A network gateway silently drops new flows
Linux Netfilter · Advanced · 4 hr · Individual / Team
- 06
Small requests succeed while large transfers freeze
Linux TCP · Advanced · 4 hr · Individual / Team