Free tools for network engineers

Built by IPWOX for the jobs we do every day. Everything runs entirely in your browser — nothing is uploaded, ever. They're tools of the trade, shared as-is rather than run as maintained products — if anything misbehaves, report it with the Feedback button in each tool and it reaches us directly. Free to use — © IPWOX Limited, not licensed for copying or republication.

PCAP Analyzer — Open .pcap/.pcapng captures and read them as conversations — protocols decoded, handshakes, DNS, TLS and errors highlighted.

RADIUS Log Viewer — FortiNAC, Microsoft NPS and FreeRADIUS logs as 802.1X/MAB conversations, with a plain-English verdict per exchange.

RADIUS & SNMP Decoder — Open a .pcap and read 802.1X/MAB, accounting, CoA, SNMP traps and MAC-table polls in plain English.

FortiGate VPN Config Generator — Route-based IPsec for FGT↔FGT, Azure and AWS — phase 1/2, policies, routing and verification commands.

Cisco 802.1X NAC Config Generator — The full NAC switch side: AAA, RADIUS with CoA, MAB, device tracking and SNMP traps — IOS and IOS-XE, legacy or IBNS 2.0.

Bulk MAC Lookup — Paste thousands of MACs in any format and get every vendor from the IEEE registry, offline — randomized/LAA flagged.

Subnet Planner — VLSM plans from host counts with growth headroom, free blocks, a visual map and CSV/Markdown export.

These tools are built and maintained by IPWOX engineers and shared free. Missing something? Suggest a tool — or if your network needs more than a viewer, talk to us or browse our technical articles.