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wiki/services/dns/Configuration.md

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# Forwarder setup
Configuration of common resolver softwares, to forward DNS queries for `.dn42` (and reverse DNS) to `172.22.0.53`.
## BIND
If you already run a local DNS server, you can tell it to query the dn42 anycast servers for the relevant domains
by adding the following to /etc/bind/named.conf.local
```
zone "dn42" {
type forward;
forwarders { 172.22.0.53; };
};
zone "22.172.in-addr.arpa" {
type forward;
forwarders { 172.22.0.53; };
};
zone "23.172.in-addr.arpa" {
type forward;
forwarders { 172.22.0.53; };
};
```
## dnsmasq
If you are running dnsmasq under openwrt, you just have to add
```
config dnsmasq
option boguspriv '0'
option rebind_protection '1'
list rebind_domain 'dn42'
list server '/dn42/172.22.0.53'
list server '/22.172.in-addr.arpa/172.22.0.53'
list server '/23.172.in-addr.arpa/172.22.0.53'
```
to `/etc/config/dhcp` and run `/etc/init.d/dnsmasq` restart. After that you are able to resolve `.dn42`
with the anycast DNS-Server, while your normal requests go to your standard DNS-resolver.
Attention: If you go with the default config you'll have to disable "boguspriv" in the first dnsmasq config section.
For normal dnsmasq use
```
server=/dn42/172.22.0.53
server=/22.172.in-addr.arpa/172.22.0.53
server=/23.172.in-addr.arpa/172.22.0.53
```
in `dnsmasq.conf`.
## PowerDNS recursor
Add this to /etc/powerdns/recursor.conf (at least in Debian)
```
dont-query=127.0.0.0/8, 10.0.0.0/8, 192.168.0.0/16, ::1/128, fe80::/10
forward-zones= dn42=172.22.0.53,22.172.in-addr.arpa=172.22.0.53,23.172.in-addr.arpa=172.22.0.53
```
## MaraDNS
Put this in your mararc:
```
ipv4_alias["dn42_root"] = "172.22.0.53"
root_servers["dn42."] = "dn42_root"
root_servers["22.172.in-addr.arpa."] = "dn42_root"
root_servers["23.172.in-addr.arpa."] = "dn42_root"
```
## Unbound
`unbound.conf` for forwarding requests to `172.22.0.53`.
```
server:
domain-insecure: "dn42"
local-zone: "22.172.in-addr.arpa." nodefault
local-zone: "23.172.in-addr.arpa." nodefault
local-zone: "d.f.ip6.arpa." nodefault
forward-zone:
name: "dn42"
forward-addr: 172.22.0.53
forward-zone:
name: "22.172.in-addr.arpa"
forward-addr: 172.22.0.53
forward-zone:
name: "23.172.in-addr.arpa"
forward-addr: 172.22.0.53
forward-zone:
name: "d.f.ip6.arpa"
forward-addr: 172.22.0.53
```
## JunOS (SRX 12.1X46)
Should also work in 12.1X44 and 12.1X45. After making the changes below you may need to run:
```
restart named-service
```
Config (vlan.0 is presumed to be your LAN/Trust interface)
```
system {
services {
dns {
dns-proxy {
interface {
vlan.0;
}
default-domain dn42 {
forwarders {
172.22.0.53;
}
}
default-domain 22.172.in-addr.arpa {
forwarders {
172.22.0.53;
}
}
default-domain 23.172.in-addr.arpa {
forwarders {
172.22.0.53;
}
}
}
}
}
}
```