{"id":26063265,"url":"https://github.com/edgio/tlsscan","last_synced_at":"2025-08-22T15:04:08.421Z","repository":{"id":46229203,"uuid":"283298844","full_name":"Edgio/tlsscan","owner":"Edgio","description":"TLS protocol scanner","archived":false,"fork":false,"pushed_at":"2022-09-27T07:25:36.000Z","size":161,"stargazers_count":13,"open_issues_count":0,"forks_count":6,"subscribers_count":7,"default_branch":"master","last_synced_at":"2025-04-11T12:16:36.300Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/Edgio.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE-2.0.txt","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2020-07-28T18:44:39.000Z","updated_at":"2024-08-28T22:38:37.000Z","dependencies_parsed_at":"2023-01-18T18:34:22.286Z","dependency_job_id":null,"html_url":"https://github.com/Edgio/tlsscan","commit_stats":null,"previous_names":[],"tags_count":8,"template":false,"template_full_name":null,"purl":"pkg:github/Edgio/tlsscan","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Edgio%2Ftlsscan","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Edgio%2Ftlsscan/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Edgio%2Ftlsscan/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Edgio%2Ftlsscan/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/Edgio","download_url":"https://codeload.github.com/Edgio/tlsscan/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Edgio%2Ftlsscan/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":271657469,"owners_count":24797934,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","status":"online","status_checked_at":"2025-08-22T02:00:08.480Z","response_time":65,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-03-08T16:34:27.758Z","updated_at":"2025-08-22T15:04:08.383Z","avatar_url":"https://github.com/Edgio.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"![tlsscan-ci](https://github.com/edgio/tlsscan/workflows/tlsscan-ci/badge.svg)\n\n# tlsscan\n\u003e _TLS/SSL protocol/cipher scanner (based on work from [sslscan](https://github.com/rbsec/sslscan))_\n\n\n## Table of Contents\n\n- [Background](#background)\n- [Install](#install)\n- [Usage](#usage)\n- [Contribute](#contribute)\n- [License](#license)\n\n\n## Background\n`tlsscan` is a basic command line TLS scanner using [OpenSSL](https://www.openssl.org/) to display protocols and ciphers supported by a remote TLS server application.  The tool is based on previous work: [sslscan](https://github.com/rbsec/sslscan), but updated somewhat to support newer protocols and ciphers via later releases of upstream [OpenSSL](https://www.openssl.org/) project.\n\nOther more authoritative and accurate references for scanning including sources like [Qualys, SSL Labs](https://www.ssllabs.com/ssltest/) should also be referenced, and as such `tlsscan` is provided on an _\"as is\"_ basis.\n\n\n## Install\n\n### Building tlsscan from source\n\nRun the `build.sh` script to pull down OpenSSL and build\n```sh\n./build.sh\n```\n\n### OS X Build requirements (brew)\n```bash\nbrew install cmake\nbrew install dpkg\n```\n\n### Installation\nInstall from the build directory with\n```sh\ncd build \u0026\u0026 make install\n```\n\n### Running\n\n```sh\n~\u003etlsscan google.com\nConnected to 172.217.14.110:443\n\nTesting SSL server google.com on port 443 using SNI name google.com\n\n  SSL/TLS Protocols:\n    TLSv1.3 is enabled\n    TLSv1.2 is enabled\n    TLSv1.1 is enabled\n    TLSv1   is enabled\n    SSLv3   is not enabled\n    SSLv2   is not enabled\n\n  TLS Fallback SCSV:\n    Server                supports TLS Fallback SCSV\n\n  TLS renegotiation:\n    Session renegotiation secure supported\n\n  Supported Server Cipher(s):\n    Preferred TLSv1.3  128 bits  TLS_AES_128_GCM_SHA256        Curve 25519 DHE 253\n    Accepted  TLSv1.3  256 bits  TLS_AES_256_GCM_SHA384        Curve 25519 DHE 253\n    Accepted  TLSv1.3  256 bits  TLS_CHACHA20_POLY1305_SHA256  Curve 25519 DHE 253\n    Preferred TLSv1.2  256 bits  ECDHE-ECDSA-CHACHA20-POLY1305 Curve 25519 DHE 253\n    Accepted  TLSv1.2  128 bits  ECDHE-ECDSA-AES128-GCM-SHA256 Curve 25519 DHE 253\n    Accepted  TLSv1.2  256 bits  ECDHE-ECDSA-AES256-GCM-SHA384 Curve 25519 DHE 253\n    Accepted  TLSv1.2  256 bits  ECDHE-RSA-CHACHA20-POLY1305   Curve 25519 DHE 253\n    Accepted  TLSv1.2  128 bits  ECDHE-RSA-AES128-GCM-SHA256   Curve 25519 DHE 253\n...             \n\n  Server Key Exchange Group(s):\n    TLSv1.3  128 bits  secp256r1 (NIST P-256)\n    TLSv1.3  128 bits  x25519\n    TLSv1.2  128 bits  secp256r1 (NIST P-256)\n    TLSv1.2  128 bits  x25519\n\n  Server Signature Algorithm(s):\n    TLSv1.3 rsa_pkcs1_nohash\n    TLSv1.3 dsa_nohash\n...\n\n\n  SSL Certificate:\n    Serial Number:        cb:fd:0b:25:61:65:6e:a2:02:00:00:00:00:5c:67:5c\n    Signature Algorithm:  sha256WithRSAEncryption\n    Subject:              *.google.com\n    Altnames:             DNS:*.google.com, DNS:*.android.com, DNS:*.appengine.google.com, DNS:*.cloud.google.com, DNS:*.crowdsource.google.com, DNS:*.g.co, ...\n    Issuer:               GTS CA 1O1\n    Not valid before:     Mar  3 09:45:25 2020 GMT\n    Not valid after:      May 26 09:45:25 2020 GMT\n```\n\n\n## Usage\n`tlsscan --help`\n\n```sh\nOptions:\n  -h, --help                display this help and exit.\n  -V, --version             display the version number and exit.\n  \nRun Options:\n  -4, --ipv4                resolve name to IPv4 address.\n  -6, --ipv6                resolve name to IPv6 address.\n  -t, --tls_options         TLS options string.\n  -c, --cert                check cert info.\n  -s, --ocsp                check OCSP response.\n  -a, --sig_algo            check signature algorithms.\n  -x, --curves              check elliptic curves.\n  -m, --compression         check for compression.\n  -e, --heartbleed          check for heartbleed.\n  -n, --servername          set TLS ext servername (SNI) in ClientHello.\n  \nDisplay Options:\n  -L, --show_client_ciphers show supported client ciphers.\n  -A, --show_cas            show trusted CA's for client auth.\n\n```\n\n## Contribute\n\n- We welcome issues, questions and pull requests.\n\n\n## License\n\nThis project is licensed under the terms of the Apache 2.0 open source license. Please refer to the `LICENSE-2.0.txt` file for the full terms.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fedgio%2Ftlsscan","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fedgio%2Ftlsscan","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fedgio%2Ftlsscan/lists"}