bwmon vs ElastiFlow

bwmon is a free, self-hosted bandwidth monitor for one Linux host and one network interface. Its dashboard updates receive and transmit rates every second, charts recent traffic, and lists top processes. When traffic passes five times its rolling two-minute average, bwmon records process attribution, all-interface rates, and leading conntrack flows for spike investigation. It retains five-minute samples for six months, with views from one hour to all time, a time-of-week heatmap, and a rate histogram. A banner appears when the rolling five-minute average reaches 40 Mbps; cleared alerts remain in the history table. Installation uses a shell script that sets up the collector, systemd service, cron jobs, and nginx server block; the dashboard defaults to port 8080. It requires Linux kernel 4.0 or later and root access. Debian and Ubuntu use the apt-based installer, while other distributions need manual dependency setup. The project recommends authentication for internet-exposed installations.

ElastiFlow collects and analyzes network flow and telemetry data for network observability and security analytics. Its performance and availability solution is intended to help network operations and engineering teams find and resolve issues across complex, distributed environments. It handles NetFlow, IPFIX, and sFlow, with application visibility, conversation analysis, and bandwidth monitoring. NetObserv offers visibility, open-data-platform integration, pre-built dashboards, and machine-learning jobs. ElastiFlow extracts more than 6,200 standard and vendor-specific fields from flow records and enriches them with GeoIP, autonomous-system, and IP-reputation information. Supported platforms include Elasticsearch, Elastic Cloud, Elastic Cloud Enterprise, OpenSearch, AWS OpenSearch Service, Apache Kafka, Confluent Platform, Redpanda, Splunk, and Cribl Stream. Deployment options include Docker, Linux, Ansible, and Helm. The virtual appliance supports VMware ESX, Proxmox, and KVM, and is intended for up to 16,000 flows per second from one location. Basic costs nothing and supports up to 4,000 records per second and 25 SNMP devices. A 30-day trial is available.