パケ道

Packet Road is a simulation application that visualizes network packet flow in real time.

You can freely place and connect 14 types of network devices, including routers, L2 switches, firewalls, load balancers, NATs, DNS servers, WAFs, and CDNs, on a canvas and see how HTTP, DNS, ICMP, ARP, and TCP packets flow through animation.

【Recommended for:】
- Those who want to visually understand how networks work
- Those studying for certifications such as CCNA or Network Specialist
- Those looking for training materials for new engineers
- Those who want to learn routing, NAT, and VLAN operation hands-on

【Two Modes for Step-by-Step Learning】
Easy Mode: Packets arrive simply by connecting cables. Routing and MAC resolution are automatic. Even network beginners can experience it immediately.

Real Mode: Reproduces operation close to a real network. Routing table settings, default gateway, ARP resolution (broadcast → unicast response), TCP 3-way handshake (SYN → SYN+ACK → ACK), and DNS name resolution are required.

[Educational Feedback]
When a packet is dropped, an explanation of why it failed and correction hints are displayed. In case of a timeout, a specific explanation is automatically generated based on the type of device that stopped the packet.

[Main Features]
- 14 types of network devices (Client, Server, Router, L2/L3/VLAN Switch, Firewall, LB, NAT, DNS, WAF, CDN, Proxy, Internet)
- Color-coded display of HTTP, DNS, ICMP, ARP, and TCP protocols
- Device settings (IP/subnet, routing table, ACL rules, VLAN ID, DNS A record, NAT rules, etc.)
- Tap log lines to expand and display packet details for each layer from L2 to L7
- Manual/automatic packet transmission (specify protocol, source, and destination)
- Domain name specification transmission (experience the actual flow of DNS automatic query → HTTP transmission)
- SQL injection/XSS attack packet transmission (for WAF verification)
- Save/load topology (Free 1 slot / Pro 5 slots)
- Playback speed adjustment (0.25x to 10x)
- Pinch zoom and pan operation
- First launch tutorial (6-page swipe-style, each page has built-in Canvas animation)
- Starter Automatic Topology Placement
- 16-Language UI Support (Japanese/English/Simplified Chinese/Traditional Chinese/Korean/Spanish/Brazilian Portuguese/German/French/Hindi/Indonesian/Russian/Italian/Turkish/Thai/Vietnamese, automatically synchronized with device language)

【Free Version / Pro Version】
Free Version: 5 types of devices, up to 5 units, 1 save slot, ads displayed
Pro Version (¥1,000 one-time purchase): 14 types of devices, unlimited devices, 5 slots, no ads, detailed log display

【Privacy】
Created topology data is stored only on the device, and the app does not independently transmit user data externally. The Free version displays Google AdMob ads, and AdMob collects device identifiers, etc. Please check the privacy policy for details.