1. Documenting the problem and solution.
2. A DNS failure.
3. An incorrect gateway configuration.
4. 802.11a, 802.11g, 802.11n, 802.11ac.
5. Wired Equivalent Privacy (WEP).
6. PfTop.
7. The remote network may have blocked ICMP traffic; therefore, we cannot ping the host.
8. UDP.