macOS
Homebrewverified · 100%
brew install tcpsplitlocal Homebrew formula metadata
brew
Install tcpsplit with Homebrew
Break a packet trace into some number of sub-traces. Version 0.3 via Homebrew; verified from local package data.
install
Additional install commands
overview
Package summary
Break a packet trace into some number of sub-traces
Project links
Commands and aliases
- tcpsplit
history
Project history and usage
tcpsplit is a small libpcap trace utility from Mark Allman for splitting one packet trace into several smaller traces while keeping each TCP connection together. Its history is intentionally modest: it is a research-and-analysis helper rather than a broad platform.
Project history
The official ICIR page presents tcpsplit as Mark Allman's utility for breaking large libpcap traces along TCP connection boundaries. The 0.3 README identifies the March 2025 release and says it was developed for MacOS and Linux, with libpcap as the required dependency.
Adoption history
The supplied package metadata shows only a Homebrew package among the tracked package managers, which fits the tool's narrow role in packet-trace analysis. The author's homepage notes a new tcpsplit release in March 2025, so the project was still maintained for its niche even without broad packaging.
How it is used
The package is used when a packet trace is too large for detailed work or when analysis should be developed against a subset without splitting individual TCP flows across output files. The README documents deterministic splitting, prefix-based IPv4 and IPv6 classification, and a validation script to check that splitting did not lose data.
Why package nerds care
For package nerds, tcpsplit is the kind of single-purpose C utility that belongs near tcpdump and other pcap tools: it does one trace-management job and stays out of the way. Its value is less about popularity and more about preserving flow boundaries while making large captures tractable.
Timeline
- March 2025: tcpsplit 0.3 released with refactoring, IPv6 support, Linux cooked SLL2 support, and prefix options.
- Package metadata: tracked as a Homebrew formula.
Related projects
- libpcap is the required trace-file dependency; tcpdump-style pcap captures are the practical input; VLAN and Linux cooked capture formats appear in the official ChangeLog as supported trace concerns.
Sources
- https://www.icir.org/mallman/
- https://www.icir.org/mallman/software/tcpsplit/
- https://www.icir.org/mallman/software/tcpsplit/ChangeLog
- input source_facts.package-manager
security posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 8 platform targets.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
tcpsplit | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-08
manager version0.3
manager updated
local dataok
upstreamnot checked
latest detectednot detected
https://www.icir.org/mallman/software/tcpsplit/
- infoNo package-manager update timestamp was available.low confidence
- infoRelease/tag comparison is only available for GitHub repositories.https://www.icir.org/mallman/software/tcpsplit/none confidence
install metadata
Package metadata
| Package key | brew:tcpsplit |
|---|---|
| Version | 0.3 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/tcpsplit |
| Homepage | https://www.icir.org/mallman/software/tcpsplit/ |
| Upstream docs | https://www.icir.org/mallman/software/tcpsplit |
| License | LicenseRef-Homebrew-cannot-represent |
| Source archive | https://www.icir.org/mallman/software/tcpsplit/tcpsplit-0.3.tar.gz |
| Uses from macOS | libpcap |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, sonoma, ventura, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | tcpsplit |
| Version Scheme | 0 |
| Revision | 0 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- package relationship graph
- package version freshness
- package-page enrichment