Users, Permissions, Processes
Services, Logs, Environment
SSH
DNS and TLS
CIDR and Subnets
Practice
Assignment
Cloud Track
Under construction
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Implementation plan:
- IP addresses revisited: IPv4 structure, octets, binary representation
- What is a subnet — dividing a network into smaller segments
- CIDR notation: what
/24, /16, /8 mean
- Calculating subnet ranges: network address, broadcast address, usable hosts
- Common CIDR blocks:
10.0.0.0/16, 172.16.0.0/12, 192.168.0.0/24
- Private vs public IP ranges (RFC 1918)
- Routing basics: how packets move between subnets — routing tables, default gateway
- Why this matters for cloud: VPC design, subnet planning, security boundaries
- Practice: calculate usable IPs for given CIDR blocks, plan a simple subnet layout on paper
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