Arkime vs Exterro FTK Imager

Arkime is a free, open-source network analysis and session search tool that passively observes traffic and creates searchable session records. It parses layers 3–7 and indexes fields including protocols, DNS names, HTTP headers, TLS/JA4 fingerprints, file hashes, and GeoIP in OpenSearch or Elasticsearch. Operators can store full packets in standard PCAP format or use metadata-only capture, with rules to select traffic for saving. Users can search sessions, inspect packet data, and export results as PCAP or CSV. Cont3xt enriches supported indicators using commercial and OSINT sources, including VirusTotal, Censys, and Shodan; phone enrichment is limited to the U.S. Parliament groups clusters and displays cluster issues and Elasticsearch health. Capture can scale by adding machines or increasing CPU and disk. Arkime has no license fees or paid-only features. Installation guidance covers Linux, recommends Debian or Ubuntu LTS, and links to a container guide. OpenSearch or Elasticsearch is required for session metadata. Authentication options include basic, form, digest, header, and OIDC, while the project advises against anonymous authentication.

Exterro FTK Imager is a forensic imaging and preview tool for acquiring and preserving digital evidence. It creates full disk images in multiple industry-standard formats and verifies them with MD5 or SHA-1 hashes. Investigators can preview files and folders before acquisition, capture volatile RAM and registry data from a live device, and read or write common forensic image formats. Files can be exported for further analysis in FTK Forensic Toolkit. Supported acquisition sources include Windows and Linux hard drives, CDs and DVDs, thumb drives and other USB devices. The tool runs on Windows only, though it can image a Linux device; it does not collect directly from phones or other mobile devices. The free FTK Imager plan is listed at free. FTK Imager Pro costs $499 a year and adds encryption-aware workflows, iOS advanced logical collection, faster preview and targeted acquisition. Exterro identifies incident response and DFIR teams, law enforcement, forensic examiners, and corporate security and HR investigators as intended users.