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dnsmasq/readme.md
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@ -12,7 +12,7 @@ Lightweight DHCP and DNS server.
* [Arch wiki](https://wiki.archlinux.org/index.php/dnsmasq) * [Arch wiki](https://wiki.archlinux.org/index.php/dnsmasq)
dnsmasq solves the problem of accessing self hosted stuff when you are inside dnsmasq solves the problem of accessing self hosted stuff when you are inside
your network. As asking googles DNS for `blabla.org` will return your your network. As asking google's DNS for `blabla.org` will return your
very own public IP and most routers/firewalls wont allow this loopback, very own public IP and most routers/firewalls wont allow this loopback,
where your requests should go out and then right back.</br> where your requests should go out and then right back.</br>
Usual quick way to solve this issue is editing the `hosts` file on your machine, Usual quick way to solve this issue is editing the `hosts` file on your machine,
@ -107,17 +107,16 @@ of the dnsmasq host as the DNS server.
# resolv.conf # resolv.conf
A file that contains DNS nameservers to be used by the linux machine it sits on.</br>
Since dnsmasq, a DNS server, is running right on this machine,
the entries just point to localhost.</br>
`resolv.conf` `resolv.conf`
``` ```
nameserver ::1 nameserver ::1
nameserver 127.0.0.1 nameserver 127.0.0.1
``` ```
A file that contains DNS nameservers to be used by the linux machine it sits on.</br>
Since dnsmasq, a DNS server, is running right on this machine,
the entries just point to localhost:</br>
`nameserver ::1`</br>
`nameserver 127.0.0.1`
Bit of an issue is that this file is often managed by various system services, Bit of an issue is that this file is often managed by various system services,
like dhcpcd, systemd, networkmanager... and they change it as they see fit.</br> like dhcpcd, systemd, networkmanager... and they change it as they see fit.</br>
@ -163,32 +162,32 @@ where you can assign a hostname to an IP.</br>
dnsmasq reads `/etc/hosts` for IP hostname pairs and adds them to its own dnsmasq reads `/etc/hosts` for IP hostname pairs and adds them to its own
resolve records. resolve records.
Unfortunately no wildcard support. Unfortunately no wildcard support.</br>
But as seen in the `dnsmasq.conf` there is a wildcard section solving this, But as seen in the `dnsmasq.conf`, when domain is set it acts as a wildcard
so `blabla.org` stuff here is just for show. rule. So `blabla.org` stuff here is just for show.
# Start the service # Start the service
`sudo systemctl enable --now dnsmasq` `sudo systemctl enable --now dnsmasq`
*Make sure you disable other DHCP servers on the network, Make sure you **disable other DHCP servers** on the network,
usually a router is running one.* usually a router is running one.
# Test it # Test it
#### DHCP #### DHCP
Set some machine on the network to use DHCP for its network setting.</br> Set some machine on the network to use DHCP for its network setting.</br>
It should just work. Network connection should just work with full connectivity.
You can check on the dnsmasq host, file `/var/lib/misc/dnsmasq.leases` You can check on the dnsmasq host, file `/var/lib/misc/dnsmasq.leases`
for the active leases. Location of the file can vary base on your linux distro. for the active leases. Location of the file can vary base on your linux distro.
#### DNS #### DNS
nslookup is utility that checks DNS mapping, nslookup is a utility that checks DNS mapping,
part of `bind-utils` or `bind-tools` packages, again depending on the distro. part of `bind-utils` or `bind-tools` packages, again depending on the distro.
But also part of windows.
* `nslookup google.com` * `nslookup google.com`
* `nslookup gateway` * `nslookup gateway`