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netref — the wholenetwork stack,one tab away.
IPv4 subnetting, CIDR, masks, IPv6, ports, routing, NAT, DNS — every reference table worth<br>memorizing, plus a live subnet calculator. Pick a section, or hit search.
Fundamentals<br>osi OSI & TCP/IP bin Binary / Dec / Hex
Addressing<br>addr IP Classes & Reserved v6 IPv6 v6+ IPv6 Advanced
Subnetting<br>cidr IPv4 Subnetting / CIDR mask Subnet Mask Table vlsm VLSM & Supernetting
Switching · L2<br>l2 Ethernet, MAC & ARP vlan VLANs & Trunking stp STP & EtherChannel
Routing · Transport<br>route Routing & AD l4 TCP / UDP & Transport nat NAT / PAT fhrp First-Hop Redundancy
Routing Protocols<br>igp Protocols Compared ospf OSPF eigrp EIGRP bgp BGP isis IS-IS
Services<br>port Ports & Protocols dns DNS & DHCP tls TLS / SSL http HTTP / HTTPS mail Email Protocols qos QoS
Infrastructure<br>dev Devices & Appliances phy Cabling & Physical (L1) topo Topologies & Architecture
Wireless<br>wifi Wi-Fi & 802.11 rf Wireless RF & Design
WAN · Cloud<br>wan WAN & SD-WAN ppp PPP & Serial cloud Cloud & Virtualization
Security<br>risk Threats & Attacks acl ACLs & Firewalls vpn VPN & IPsec aaa AAA & Access Control crypto Cryptography Basics hard Device Hardening
Operations<br>diag Diagnostic Tools & ICMP cli Command Cheatsheet mon Monitoring & Management doc Documentation & IPAM perf Performance Metrics auto Automation & APIs
Capture · Analysis<br>tcpd tcpdump wsf Wireshark Filters scpy Scapy nmap Nmap dig dig / nslookup
Advanced<br>mcast Multicast (IGMP/PIM) voip VoIP & Collaboration san Storage Networking dc Data Center ot IoT / ICS / SCADA
Tools<br>calc Subnet Calculator conv Mask ↔ CIDR plan VLSM Subnet Planner agg Supernet Aggregator v6c IPv6 Compress / Expand insp IP Inspector mac MAC Tools bw Bandwidth / Transfer sla SLA / Uptime print Print Cheatsheet
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