Most outages that look like application problems are really network problems: a DNS change, a dropped route, an expired certificate. Network Monitoring watches the paths your services depend on so you catch these before your users do.
Go to the Network Monitoring page.
Enter the hostname, IP, or endpoint you depend on, internal or external.
Enable the checks you need: DNS resolution, TCP connect, traceroute hops, BGP route stability, and external SSL certificate expiry.
Pick how often each check runs and the thresholds that trigger an alert (for example, SSL expiring within 14 days).
Track resolution time, hop latency, and route changes so you can tell a network blip from a real shift.
SSL expiry checks warn you before a certificate lapses. Pair them with the Certificates manager so renewals and monitoring live side by side.