ACLs, Ports, and Security
Calculated locally
Port Range Formatter
Normalize and compress port lists, expand ranges, and detect invalid or duplicate entries.
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 mixed ports/ranges and get normalized, expanded, and compressed forms.
All processing runs in-browser with no external API dependency.
Practical example
Example: 22,80,443,1000-1005 expands and deduplicates automatically.
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.