ACLs, Ports, and Security
Calculated locally
ACL Wildcard Visualizer
Visualize wildcard-mask matching range, fixed bits, and ignored bits for ACL design validation.
Learn before you deploy
Reference PacketToolbox learning content related to this workflow.
Tool input
Use the fields below and run the calculation or generation locally.
Results
Review output and validation notes before production use.
How it works
Provide base IP and wildcard mask to inspect matching behavior.
All processing runs in-browser with no external API dependency.
Practical example
Example: 10.10.10.0 with 0.0.0.255 matches one /24 range.
Related tools
Use these together for complete design and troubleshooting workflows.
- IPv4 Subnet Calculator for subnet boundary and wildcard checks.
- VLSM Planner for hierarchical IPv4 allocation.
- Route Summarization Calculator for clean route advertisement planning.
- Cisco ACL Builder for policy-generation workflows.