AdGuard 8.5 Visit djbdns
cr.yp.to
Spec sheet
- Purpose
- djbdns is a collection of tools for DNS caching, serving, client lookups, and debugging.Read 9 Oct 2026 · cr.yp.to
- Support
- The maker points users to the dns mailing list and says third-party commercial support is available.Read 9 Oct 2026 · cr.yp.to
- Cache protection
- The maker says dnscache uses unpredictable query IDs and UDP ports and is immune to cache poisoning.Read 9 Oct 2026 · cr.yp.to
- Client tools
- The package includes a DNS client C library and command-line utilities for sending requests to DNS caches.Read 9 Oct 2026 · cr.yp.to
- Debugging
- The package includes DNS debugging tools, including dnstrace for diagnosing misconfigured remote servers.Read 9 Oct 2026 · cr.yp.to
- Distribution terms
- The maker states that the djbdns package was placed in the public domain on 2007-12-28.Read 9 Oct 2026 · cr.yp.to
- DNS cache
- The dnscache program finds addresses of Internet hosts and can run on a workstation or for an ISP's customers.Read 9 Oct 2026 · cr.yp.to
- DNS server
- The tinydns program publishes locally configured IP address information in response to iterative DNS queries.Read 9 Oct 2026 · cr.yp.to
- Latest package
- The installation page identifies djbdns-1.05.tar.gz as the latest published package.Read 9 Oct 2026 · cr.yp.to
- OS support
- The installation page says djbdns works only under UNIX and specifically says SCO UnixWare is unsupported.Read 9 Oct 2026 · cr.yp.to
- Prerequisites
- The maker's installation instructions require daemontools 0.70 or above and ucspi-tcp to be installed first.Read 9 Oct 2026 · cr.yp.to
- Security design
- The maker's security page says dnscache, tinydns, and walldns run under dedicated non-root accounts in chroot jails.Read 9 Oct 2026 · cr.yp.to
- Security guarantee
- The maker offers $1000 to the first person to publicly report a verifiable security hole in the latest version, with stated exclusions including denial-of-service attacks.Read 9 Oct 2026 · cr.yp.to
- Server limitation
- tinydns listens for UDP queries on port 53 and does not listen for TCP queries; the maker documents axfrdns for TCP service and zone transfers.Read 9 Oct 2026 · cr.yp.to
Plans and prices
djbdns-1.05 Free Free to download, compile, and run · latest published package named djbdns-1.05.tar.gz Read 9 Oct 2026 · cr.yp.to
Where Specifiction places it
- DNS Server Software#8 of 237.7
