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2.8Network Diagnostics
# Check if a host is reachable
ping staging.example.com
# Check DNS resolution
nslookup staging.example.com
dig staging.example.com
# Check if a port is open on a remote host
nc -zv staging.example.com 443
# Trace the network path to a host
traceroute staging.example.com
# Check your machine's IP addresses
ip addr show
# Or on macOS:
ifconfig
# Test HTTP connectivity
curl -I https://staging.example.com