安装

其他安装命令

macOS

Homebrew已验证 · 100%

brew install lft

local Homebrew formula metadata

MacPorts已验证 · 94%

sudo port install lft

MacPorts ports tree · net/lft/Portfile · 来源: api.github.com

Linux

Debian apt已验证 · 92%

sudo apt install lft

Debian stable package indexes · lft · 来源: deb.debian.org

概览

软件包摘要

Layer Four Traceroute (LFT), an advanced traceroute tool

项目链接

命令和别名

lft
whob

历史

项目历史与用法

LFT, Layer Four Traceroute, is a network diagnostic tool that extends traceroute-style path discovery with TCP, UDP, ICMP, AS lookup, netblock lookup, and firewall-aware heuristics. It is packaged together with WhoB, a whois-oriented companion tool for routed IP address context.

项目历史

The official LFT page says LFT was first released publicly in 1998 under the name FFT. Its distinguishing idea was tracing with transport-layer probes, including TCP SYN or FIN probes to arbitrary services, instead of relying only on the classic UDP probe pattern associated with traditional traceroute.

The project has continued as an operational networking tool rather than a large hosted source-code community. The 3.95, 3.96, and 3.97 changelog entries document modernization work such as getaddrinfo/getnameinfo migration, asynchronous DNS through c-ares, Path MTU discovery, ncurses watch mode, and ECMP-stable tracing.

采用历史

LFT's adoption is strongest among network engineers, reverse engineers, and operators who need route visibility across firewalls, ECMP paths, or protocol-specific forwarding behavior. Packaging in Homebrew, Debian, Ubuntu, and MacPorts makes it available in the same toolbox as traceroute, mtr, tcpdump, and whois.

使用方式

Users run `lft` to trace a path with TCP, UDP, ICMP, or RFC 1393 style probes, then use options for AS numbers, netblock names, verbose packet interpretation, or newer visual/statistical output. The bundled `whob` client provides quick origin-ASN and registry context for IP addresses.

为什么软件包爱好者会关心

LFT is a classic small networking package: specialized, privilege-sensitive, and valuable when the default platform traceroute does not model the path a service actually takes. Its continued packaging matters because it preserves a 1990s diagnostic idea that remains relevant on filtered and load-balanced networks.

时间线

1998: The tool was released publicly under the name FFT, according to the official authors' note.
Version 2.5: Recent releases at that point included WhoB as a standalone client in the LFT binary directory.
2026-03: LFT 3.95 modernized resolver APIs and added asynchronous DNS.
2026: LFT 3.96 added active Path MTU Discovery and richer per-hop statistics.
2026-04: LFT 3.98 was announced with build-system fixes for Linux packaging and autoconf.

Related projects

LFT is related to traceroute, tcpdump/libpcap, whois clients, Prefix WhoIs, RIPE NCC and Team Cymru ASN lookups, mtr, and other operator-focused path diagnosis tools.

来源

安全态势

风险级别：绿色

narrow executable package without higher-risk signals.

风险分类器

绿色风险 · 低置信度 · appliance

原因

narrow executable package without higher-risk signals

信号

metadata:no-higher-risk-signals

安装行为

formula 元数据中未记录 Homebrew post-install 钩子。
Homebrew bottle 元数据适用于 6 个平台目标。

建议审查

在无人值守的代理使用前，请检查该工具是否读取明文凭据、写入远程状态、发布制品或调用插件。

可执行文件

已安装的可执行文件

命令	类型	暴露范围	备注
`lft`	cli	全局可执行文件
`whob`	cli	全局可执行文件

新鲜度

版本和新鲜度

这些信号区分页生成时间、软件包管理器活动和上游发布比较。只有存在证据 URL 和可比较版本时，才会提示版本落后。

页面生成时间2026-07-25

管理器版本3.99

管理器更新时间2026-07-20

本地数据OK

上游not checked

检测到的最新版本未检测到

https://pwhois.org/lft/

信息Release/tag comparison is only available for GitHub repositories.https://pwhois.org/lft/none 置信度

安装元数据

软件包元数据

软件包键	brew:lft
版本	3.99
软件包管理器	Homebrew
软件包管理器页面	https://formulae.brew.sh/formula/lft
主页	https://pwhois.org/lft/
上游文档	https://pwhois.org/lft
许可证	VOSTROM
源码归档	https://pwhois.org/dl/index.who?file=lft-3.99.tar.gz
最后更新	2026-07-20T15:27:15Z
Pulse	updated
macOS 提供的库	libpcap
Bottle	可用 (于 arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	未定义
服务	未声明

注册表事实

源数据库详情

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	lft
Version Scheme	0
Revision	0
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	stable

源数据库匹配

其他软件包管理器记录

匹配项来自外部软件包管理器索引，并与本地 Automic Vault 软件包链接分开显示。

Debian apt95%

lft 3.91-2

layer-four traceroute

https://pwhois.org/lft/

sudo apt install lft

Section: net
Architecture: amd64
2 依赖
normalized package name match
匹配方式：Lft

Debian stable package indexes · deb.debian.org · Debian stable package indexes: lft from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

Ubuntu apt95%

lft 3.91-1build2

layer-four traceroute

http://pwhois.org/lft/

sudo apt install lft

Section: universe/net
Architecture: amd64
2 依赖
normalized package name match
匹配方式：Lft

Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: lft from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz

MacPorts95%

lft

sudo port install lft

normalized package name match
匹配方式：Lft

MacPorts ports tree · api.github.com · MacPorts ports tree: net/lft/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

软件包图谱

链接来自本地软件包关系图、补充数据、依赖边、生态匹配和软件包 hub 归属。

来源线索

由仓库数据生成

此页面由 av-web 从 scripts/generate-pkg-sqlite.py 生成的私有软件包 SQLite 工件提供。

Combined YAML source

View the package source record on GitHub.

combined/lft.yml

使用的来源

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

使用 Homebrew, apt, MacPorts 安装 lft