01 · Practice
IPv4 subnetting
Network, mask, wildcard, broadcast and host range, with prefixes from /0 to /32.
Open the tool →Networking Tools
Calculate, check and learn. Four free tools to support your networking studies.
02 · Practice
VLSM plan
Divide an IPv4 network into subnets of different sizes and export the plan.
Open the tool →03 · Practice
Converter
Convert between decimal, binary and hexadecimal, and convert masks and wildcard masks.
Open the tool →04 · Practice
ACL helper
Prepare an extended ACL rule with validated addresses and ports.
Open the tool →Put your plan to work
Download a template to record networks, addresses and assignments.