# rbsec/sslscan

sslscan tests SSL/TLS enabled services to discover supported cipher suites

Repository: https://github.com/rbsec/sslscan
Canonical: https://ross.abutalabs.com/products/sslscan
Language: C
License: GPL-3.0
License Family: copyleft
Last push: 2026-05-17T11:26:13+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 82, release rhythm 53, longevity 100
- inputs: {"age_days": 4887, "days_push": 108, "days_rel": 156, "gap_med": 144.0, "n_releases_24m": 5}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2618, forks 415 (observed 2026-08-28T04:07:04.734401+00:00)

## What it is
sslscan is a command-line tool that tests SSL/TLS enabled services to discover supported cipher suites, protocols, key exchange groups, and signature algorithms. Version 2 is a rewrite that supports legacy protocols (SSLv2/SSLv3) and TLSv1.3 independently of the compiled OpenSSL version.

## Use cases
- scan a server for supported TLS cipher suites
- check if a service still supports weak SSLv2 or SSLv3 protocols
- audit TLS configuration for weak ciphers like RC4, 3DES, or CBC
- enumerate key exchange groups and signature algorithms on a TLS endpoint
- verify TLSv1.3 support on a server
- generate XML output of TLS scan results for reporting

## When to choose
- you need a fast, focused CLI scanner for SSL/TLS configuration auditing
- you need to detect legacy protocol support (SSLv2/SSLv3) regardless of your local OpenSSL version
- you want machine-readable XML output for automated security reporting

## When to avoid
- you need a full vulnerability scanner rather than a TLS-specific tool
- you need GUI-based or continuous certificate monitoring
- you need to test non-TLS services

## Facets
- artifact type: cli-tool
- maturity: active
- function: security, vulnerability-scanning, cli, developer-tools
- domain: security, penetration-testing, networking, developer-tools
- platform: windows, cli, cross-platform
- tags: ssl, tls, cipher-scanning, penetration-testing, network-security, openssl, command-line, linux, macos

## Member repositories
- rbsec/sslscan (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:04.734401+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:20:23.172046+00:00, confidence not recorded.
  - readme: https://github.com/rbsec/sslscan (fetched 2026-08-28T04:07:04.734401+00:00, sha 61b7acee4cf0)
- Data as of 2026-08-30T08:39:29.467469+00:00.