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diff --git a/doc/netwatch-dns.md b/doc/netwatch-dns.md new file mode 100644 index 0000000..443106f --- /dev/null +++ b/doc/netwatch-dns.md @@ -0,0 +1,94 @@ +Manage DNS and DoH servers from netwatch +======================================== + +[](https://github.com/eworm-de/routeros-scripts/stargazers) +[](https://github.com/eworm-de/routeros-scripts/network) +[](https://github.com/eworm-de/routeros-scripts/watchers) +[](https://mikrotik.com/download/changelogs/) +[](https://t.me/routeros_scripts) +[](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J) + +[⬅️ Go back to main README](../README.md) + +> ℹ️ **Info**: This script can not be used on its own but requires the base +> installation. See [main README](../README.md) for details. + +Description +----------- + +This script reads server state from netwatch and manages used DNS and +DoH (DNS over HTTPS) servers. + +Requirements and installation +----------------------------- + +Just install the script: + + $ScriptInstallUpdate netwatch-dns; + +Then add a scheduler to run it periodically: + + /system/scheduler/add interval=1m name=netwatch-dns on-event="/system/script/run netwatch-dns;" start-time=startup; + +Configuration +------------- + +The DNS and DoH servers to be checked have to be added to netwatch with +specific comment: + + /tool/netwatch/add comment="doh" host=1.1.1.1; + /tool/netwatch/add comment="dns" host=8.8.8.8; + /tool/netwatch/add comment="doh, dns" host=9.9.9.9; + +This will configure *cloudflare-dns* for DoH (`https://1.1.1.1/dnsquery`), and +*google-dns* and *quad-nine* for regular DNS (`8.8.8.8,9.9.9.9`) if up. +If *cloudflare-dns* is down the script will fall back to *quad-nine* for DoH. + +Giving a specific query url for DoH is possible: + + /tool/netwatch/add comment="doh, doh-url=https://dns.nextdns.io/dns-query" host=199.247.16.158; + +Note that using a name in DoH url may introduce a chicken-and-egg issue! + +Adding a static DNS record has the same result for the url, but always +resolves to the same address. + + /ip/dns/static/add name="dns.nextdns.io" address=199.247.16.158; + /tool/netwatch/add comment="doh" host=199.247.16.158; + +Be aware that you have to keep the ip address in sync with real world +manually! + +Importing a certificate automatically is possible, at least if available in +the repository (see `certs` sub directory). + + /tool/netwatch/add comment="doh, doh-cert=DigiCert Global G2 TLS RSA SHA256 2020 CA1" host=1.1.1.1; + /tool/netwatch/add comment="doh, doh-cert=DigiCert TLS Hybrid ECC SHA384 2020 CA1" host=9.9.9.9; + /tool/netwatch/add comment="doh, doh-cert=GTS CA 1C3" host=8.8.8.8; + +Sometimes using just one specific (possibly internal) DNS server may be +desired, with fallback in case it fails. This is possible as well: + + /tool/netwatch/add comment="dns" host=10.0.0.10; + /tool/netwatch/add comment="dns-fallback" host=1.1.1.1; + +Tips & Tricks +------------- + +### Use in combination with notifications + +Netwatch entries can be created to work with both - this script and +[netwatch-notify](netwatch-notify.md). Just give options for both: + + /tool/netwatch/add comment="doh, notify, name=cloudflare-dns" host=1.1.1.1; + +Also this allows to update host address, see option `resolve`. + +See also +-------- + +* [Notify on host up and down](netwatch-notify.md) + +--- +[⬅️ Go back to main README](../README.md) +[⬆️ Go back to top](#top) |