Firewalls
When policies collide or VPN drops, logs and hit counts come first; changes come after the fault path is clear.
root@cxuting:~# cat services.md
Services
This is debugging and maintenance work. Hardware sales, spare-part procurement, warranty agency, and full project integration stay outside the scope.
Switches
VLANs, trunks, STP, stacks, and bundled links can be checked before rollout or after an outage.
Routers
Static routes, OSPF, BGP, uplink failover, and leased-line cutovers are handled with return paths in mind.
Hardening
Baselines, accounts, exposed ports, and config backups are split into fix-now items and documented risk.
Servers
RAID, iLO, iDRAC, XClarity, OS installation, and drivers are handled in a recoverable order.
Operations
Inspection is useful only when the next person can trace the change, the account, and the backup.