Practical tools for system, network, security, and operations administrators.

NET

Network desk

Addressing, DNS, ports, and the quiet arithmetic of packets. Calculators first; lookups that stay small.

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SonicWall SonicOS VLAN Subinterface Config Generator

Live

Generate VLAN Subinterface configuration for SonicWall SonicOS (CLI and GUI steps) from a simple form

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pfSense Initial Setup Config Generator

Live

Generate Initial Setup configuration for pfSense (CLI and GUI steps) from a simple form

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pfSense Interfaces & Zones Config Generator

Live

Generate Interfaces & Zones configuration for pfSense (CLI and GUI steps) from a simple form

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pfSense VLAN Subinterface Config Generator

Live

Generate VLAN Subinterface configuration for pfSense (CLI and GUI steps) from a simple form

Open tool

OPNsense Initial Setup Config Generator

Live

Generate Initial Setup configuration for OPNsense (CLI and GUI steps) from a simple form

Open tool

OPNsense Interfaces & Zones Config Generator

Live

Generate Interfaces & Zones configuration for OPNsense (CLI and GUI steps) from a simple form

Open tool

OPNsense VLAN Subinterface Config Generator

Live

Generate VLAN Subinterface configuration for OPNsense (CLI and GUI steps) from a simple form

Open tool

OPNsense Security Policy Config Generator

Live

Generate Security Policy configuration for OPNsense (CLI and GUI steps) from a simple form

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OPNsense Source NAT Config Generator

Live

Generate Source NAT configuration for OPNsense (CLI and GUI steps) from a simple form

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OPNsense Port Forwarding (DNAT) Config Generator

Live

Generate Port Forwarding (DNAT) configuration for OPNsense (CLI and GUI steps) from a simple form

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OPNsense Site-to-Site IPsec VPN Config Generator

Live

Generate Site-to-Site IPsec VPN configuration for OPNsense (CLI and GUI steps) from a simple form

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OPNsense Remote Access VPN Config Generator

Live

Generate Remote Access VPN configuration for OPNsense (CLI and GUI steps) from a simple form

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Subnet Divider

Live

Subnet Divider. Split a network into N equal subnets. The result stays on this page.

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Supernet Calculator

Live

Combine contiguous subnets into a supernet. The result stays on this page.

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Route Summarization Calculator

Live

Find the summary route for a list of networks. The result stays on this page.

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CIDR Overlap Checker

Live

Detect overlapping blocks in a list of CIDRs. The result stays on this page.

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CIDR Exclusion Calculator

Live

Subtract one CIDR from another and return the remaining blocks. The result stays on this page.

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CIDR Aggregator

Live

Collapse a large IP list into the minimal CIDR set. The result stays on this page.

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IP List Sorter & Deduplicator

Live

Sort, dedupe and validate pasted IP lists. The result stays on this page.

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Bulk IP in Subnet Checker

Live

Check many IPs against many subnets at once. The result stays on this page.

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Prefix Length for Hosts Calculator

Live

Prefix Length for Hosts Calculator. Smallest subnet that fits N hosts. The result stays on this page.

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IP Address Type Identifier

Live

Identify private, public, loopback, link-local, CGNAT, multicast, reserved

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IP to Decimal Converter

Live

IP to Decimal Converter. Convert dotted IP to integer and back. The result stays on this page.

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IP to Binary Converter

Live

Convert IP to binary with octet breakdown. The result stays on this page.

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