Four tools that cover most of what Red Line Software's classic proxy-log analyser once did — and sometimes more.
The short version
- Internet Access Monitor's core job was deceptively simple: parse proxy logs, surface who was visiting what, flag bandwidth hogs, and give small-to-medium IT teams…
- GFI LanGuard is the heaviest hitter in this list.
- Start by defining your primary need.
01What You're Actually Replacing
Internet Access Monitor's core job was deceptively simple: parse proxy logs, surface who was visiting what, flag bandwidth hogs, and give small-to-medium IT teams a clear picture of internet usage across the network — all without touching message content. When Red Line Software wound down, that combination of agentless operation, usage-level visibility and low overhead proved surprisingly hard to replace in a single product. The tools below don't replicate it exactly, but each covers a meaningful slice of the job. Match one to your network's scale and primary need, and you'll close most of the gap.
02Four Practical Replacements
GFI LanGuard is the heaviest hitter in this list. Beyond usage monitoring, it scans for security vulnerabilities and flags unlicensed or unauthorised applications — capabilities that go well past what a proxy-log parser ever offered. Its centralised console aggregates data from up to 60,000 devices simultaneously, so it scales from a branch office to a large enterprise without architectural changes. Patch management is bundled alongside monitoring, which matters for teams that want consolidated tooling rather than a stack of point solutions. The trade-off is scope: GFI LanGuard is a security and compliance platform first, a usage monitor second. If all you need is "who's eating the link," it may be more tool than the job requires.
Nagios has been an enterprise IT staple for long enough that its track record speaks for itself. It monitors network and system health — bandwidth thresholds, service availability, application response — and fires alerts the moment something drifts out of policy. Two editions are available: Nagios Core is open-source and free, community-supported, and covers foundational monitoring well. Nagios XI is the commercial tier, adding graphical dashboards, an advanced configuration UI, and reporting suitable for presenting to non-technical stakeholders. For teams that want usage tracking woven into broader system-health visibility — rather than a standalone access monitor — Nagios is the natural fit. Nagios Core's zero cost also makes it a sensible entry point for budget-constrained environments.
Net Balancer is arguably the closest functional replacement for Internet Access Monitor in everyday use. It monitors traffic across both wired LAN and Wi-Fi simultaneously, giving a unified view regardless of how devices connect — relevant now that wireless carries a much larger share of office traffic than it did in IAM's prime. What distinguishes it from pure monitoring tools is enforcement: administrators can apply per-device and per-application bandwidth limits, turning visibility into active policy rather than passive observation. Configuration can be synchronised across grouped machines, which is practical when you need to push identical throttling rules to a set of workstations without touching each one individually. For organisations whose main need is day-to-day internet usage management with some bite behind it, Net Balancer is the strongest like-for-like substitute on this list.
Rokario Bandwidth Monitor takes the opposite approach — lightweight footprint, minimal resource consumption, and a deliberately focused feature set. It tracks real-time bandwidth and connection speed, offers flexible charting options so teams can present data in whichever format suits them, and supports scheduled threshold alerts to flag bandwidth-intensive periods without requiring someone to watch a dashboard. The free tier covers core monitoring adequately for small deployments; a premium edition adds more granular control and reporting for environments that outgrow the basics. For smaller offices that need reliable, low-overhead visibility without a significant financial or infrastructure commitment, Rokario is the practical pick.
03How to Choose
Start by defining your primary need. If it's security scanning layered over usage monitoring, GFI LanGuard is the answer. If it's system-health alerting with usage tracking alongside it, Nagios — Core for tight budgets, XI for richer dashboards. If it's day-to-day internet usage management with enforcement capability, Net Balancer is the closest match. If it's lightweight, low-cost visibility for a small office, Rokario fits best.
Then check scale: GFI LanGuard and Nagios handle enterprise device counts comfortably; Net Balancer and Rokario are better suited to smaller environments. Both GFI LanGuard and Net Balancer offer evaluation periods — use them before committing. Finally, set threshold alerts during deployment; the monitoring is only as useful as the notifications that act on it.
No single tool reproduces Internet Access Monitor's particular combination of simplicity and proxy-log depth. But the market has matured, and these four options — individually or in combination — give IT teams credible, actively maintained paths forward.
