ACLs, Ports, and Security
Calculated locally
ACL Order Simulator
Simulate first-match ACL behavior on a test packet with implicit-deny awareness.
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
Enter ordered ACL entries and packet fields to identify the first matching rule.
All processing runs in-browser with no external API dependency.
Practical example
Example: A top-line deny ip any any blocks all following entries.
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.