Dnsmasq : Install2018/06/22 |
Install Dnsmasq which is the lightweight DNS forwarder and DHCP Server Software.
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[1] | Install Dnsmasq. |
root@dlp:~# apt -y install dnsmasq
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[2] | Configure Dnsmasq. |
root@dlp:~#
vi /etc/dnsmasq.conf # line 19: uncomment (never forward plain names) domain-needed # line 21: uncomment (never forward addresses in the non-routed address spaces) bogus-priv # line 53: uncomment (query with each server strictly in the order in resolv.conf) strict-order # line 67: add if you need # query the specific domain name to the specific DNS server # the example follows means query [server.education] domain to the [10.0.0.10] server
server=/server.education/10.0.0.10
# line 135: uncomment (add domain name automatically) expand-hosts # line 145: add (define domain name)
domain=srv.world
systemctl restart dnsmasq |
[3] | For DNS records, add them in /etc/hosts.Then, Dnsmasq will answer to queries from clients. |
root@dlp:~#
vi /etc/hosts # add records 10.0.0.30 dlp.srv.world dlproot@dlp:~# systemctl restart dnsmasq |
[4] | Verify to resolve Name or IP address from a client that is in your internal network. |
root@desktop:~#
vi /etc/netplan/01-netcfg.yaml # change DNS setting to Dnsmasq Server
nameservers:
addresses: [10.0.0.30]
root@desktop:~# netplan apply root@desktop:~# systemd-resolve --status --no-pager | tail -7 Link 2 (ens3) Current Scopes: DNS LLMNR setting: yes MulticastDNS setting: no DNSSEC setting: no DNSSEC supported: no DNS Servers: 10.0.0.30root@desktop:~# dig dlp.srv.world. ; <<>> DiG 9.11.3-1ubuntu1-Ubuntu <<>> dlp.srv.world. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43277 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 65494 ;; QUESTION SECTION: ;dlp.srv.world. IN A ;; ANSWER SECTION: dlp.srv.world. 0 IN A 10.0.0.30 ;; Query time: 0 msec ;; SERVER: 127.0.0.53#53(127.0.0.53) ;; WHEN: Thu Jun 21 10:51:11 JST 2018 ;; MSG SIZE rcvd: 58root@desktop:~# dig -x 10.0.0.30 ; <<>> DiG 9.11.3-1ubuntu1-Ubuntu <<>> -x 10.0.0.30 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30504 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 65494 ;; QUESTION SECTION: ;30.0.0.10.in-addr.arpa. IN PTR ;; ANSWER SECTION: 30.0.0.10.in-addr.arpa. 0 IN PTR dlp.srv.world. ;; Query time: 1 msec ;; SERVER: 127.0.0.53#53(127.0.0.53) ;; WHEN: Thu Jun 21 10:51:57 JST 2018 ;; MSG SIZE rcvd: 78 |
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