go get github.com/looterz/grimd
grimd.toml is not found, it will be generated for you, below is the default configuration.
# version this config was generated from version = "1.0.6" # list of sources to pull blocklists from, stores them in ./sources sources = [ "http://mirror1.malwaredomains.com/files/justdomains", "https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts", "http://sysctl.org/cameleon/hosts", "https://zeustracker.abuse.ch/blocklist.php?download=domainblocklist", "https://s3.amazonaws.com/lists.disconnect.me/simple_tracking.txt", "https://s3.amazonaws.com/lists.disconnect.me/simple_ad.txt", "http://hosts-file.net/ad_servers.txt", "https://raw.githubusercontent.com/quidsup/notrack/master/trackers.txt" ] # list of locations to recursively read blocklists from (warning, every file found is assumed to be a hosts-file or domain list) sourcedirs = [ "sources" ] # log configuration # format: comma separated list of options, where options is one of # file:<filename>@<loglevel> # stderr>@<loglevel> # syslog@<loglevel> # loglevel: 0 = errors and important operations, 1 = dns queries, 2 = debug # e.g. logconfig = "file:grimd.log@2,syslog@1,stderr@2" logconfig = "file:grimd.log@2,stderr@2" # apidebug enables the debug mode of the http api library apidebug = false # address to bind to for the DNS server bind = "0.0.0.0:53" # address to bind to for the API server api = "127.0.0.1:8080" # response to blocked queries with a NXDOMAIN NXDomain = false # ipv4 address to forward blocked queries to nullroute = "0.0.0.0" # ipv6 address to forward blocked queries to nullroutev6 = "0:0:0:0:0:0:0:0" # nameservers to forward queries to nameservers = ["220.127.116.11:53", "18.104.22.168:53"] # concurrency interval for lookups in miliseconds interval = 200 # query timeout for dns lookups in seconds timeout = 5 # cache entry lifespan in seconds expire = 600 # cache capacity, 0 for infinite maxcount = 0 # question cache capacity, 0 for infinite but not recommended (this is used for storing logs) questioncachecap = 5000 # manual blocklist entries blocklist =  # Drbl related settings usedrbl = 0 drblpeersfilename = "drblpeers.yaml" drblblockweight = 128 drbltimeout = 30 drbldebug = 0 # manual whitelist entries whitelist = [ "getsentry.com", "www.getsentry.com" ] # manual custom dns entries customdnsrecords =  # When this string is queried, toggle grimd on and off togglename = "" # If not zero, the delay in seconds before grimd automaticall reactivates after # having been turned off. reactivationdelay = 300 #Dns over HTTPS provider to use. DoH = "https://cloudflare-dns.com/dns-query"
Requires golang 1.7 or higher, you build grimd like any other golang application, for example to build for linux x64
env GOOS=linux GOARCH=amd64 go build -v github.com/looterz/grimd
A restful json api is exposed by default on the local interface, allowing you to build web applications that visualize requests, blocks and the cache. reaper is the default grimd web frontend.
Incoming requests spawn a goroutine and are served concurrently, and the block cache resides in-memory to allow for rapid lookups, while answered queries are cached allowing grimd to serve thousands of queries at once while maintaining a memory footprint of under 15mb for 100,000 blocked domains!
You can find examples of different daemon scripts for grimd on the wiki.