{"id":33178450,"url":"https://github.com/korc/PR-DNSd","last_synced_at":"2025-11-20T21:01:46.437Z","repository":{"id":50747375,"uuid":"189155788","full_name":"korc/PR-DNSd","owner":"korc","description":"Passive-Recursive DNS daemon","archived":false,"fork":false,"pushed_at":"2023-05-15T16:04:02.000Z","size":181,"stargazers_count":25,"open_issues_count":0,"forks_count":1,"subscribers_count":2,"default_branch":"master","last_synced_at":"2024-06-20T03:43:41.876Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Go","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/korc.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE.txt","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2019-05-29T05:23:59.000Z","updated_at":"2024-04-27T08:50:30.000Z","dependencies_parsed_at":"2024-06-19T02:42:53.400Z","dependency_job_id":"10b0c7ac-7340-4bd8-92bf-9d8c2da1aefd","html_url":"https://github.com/korc/PR-DNSd","commit_stats":null,"previous_names":[],"tags_count":3,"template":false,"template_full_name":null,"purl":"pkg:github/korc/PR-DNSd","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/korc%2FPR-DNSd","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/korc%2FPR-DNSd/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/korc%2FPR-DNSd/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/korc%2FPR-DNSd/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/korc","download_url":"https://codeload.github.com/korc/PR-DNSd/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/korc%2FPR-DNSd/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":285511776,"owners_count":27184237,"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":"2025-11-20T02:00:05.334Z","response_time":54,"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":"2025-11-16T03:00:34.212Z","updated_at":"2025-11-20T21:01:46.425Z","avatar_url":"https://github.com/korc.png","language":"Go","readme":"# PR-DNSd\n\nPassive-Recursive DNS daemon.\n\n## What does it do\n\n![This](solved-netstat.jpg)\n\n## Quickstart\n\n```sh\ngo get github.com/korc/PR-DNSd\nsudo setcap cap_net_bind_service,cap_sys_chroot=ep go/bin/PR-DNSd\ngo/bin/PR-DNSd -upstream 9.9.9.9:53 -listen 127.0.0.1:53\necho nameserver 127.0.0.1 | sudo tee /etc/resolv.conf\ndig google.com\ndig -x $(dig +short google.com)\n```\n\n_If you can't use `setcap`, you have to use `-chroot \"\"` and `-listen :\u003chigh_port\u003e` options, or run as `root`._\n\n## Use cases\n\n- run as local host DNS service, to fix your `netstat`/`tcpview`/`lsof` etc. output\n- as enterprise-internal DNS server, to also be able to do meaningful EDR/IR and log analysis\n- as cloud service, to also collect Passive DNS data from non-enterprise (home, BYOD etc.) devices\n  - _hint: you probably want to configure DDoS protection options_\n- in cloud as DNS-over-TLS server, to additionally provide private DNS for supporting devices (ex: Android 9's private DNS setting)\n  - ex: domain pattern based firewall/proxy configuration for mobile devices\n\n### Running as your own private server for Android9's Private DNS settings\n\nAfter appropriate `setcap`, run:\n\n```sh\nPR-DNSd -tlslisten :853 -cert YOUR_SERVER_CRT_KEY_PEM -upstream 1.1.1.1:53 -store pr-dnsd\n```\n\n## Options\n\n```txt\n-cert string\n    TCP-TLS listener certificate (required for tls listener)\n-chroot string\n    chroot to directory after start (default \"/var/tmp\")\n-count int\n    Count of replies allowed before debounce delay is applied (default 100)\n-ctmout string\n    Client timeout for upstream queries\n-debounce string\n    Required time duration between UDP replies to single IP to prevent DoS (default \"200ms\")\n-key string\n    TCP-TLS certificate key (default same as -cert value)\n-listen string\n    listen address (default \":53\")\n-silent\n    Don't report normal data\n-store string\n    Store PTR data to specified file\n-tlslisten string\n    TCP-TLS listener address (default \":853\")\n-upstream string\n    upstream DNS server (tcp-tls:// prefix for DoT) (default \"1.1.1.1:53\")\n    (with tls and chroot, ensure ca-certificates and resolv.conf in chroot are properly set up)\n```\n","funding_links":[],"categories":["Network"],"sub_categories":["DNS"],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkorc%2FPR-DNSd","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fkorc%2FPR-DNSd","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkorc%2FPR-DNSd/lists"}