Updated README.md with examples

README.md

@@ -5,14 +5,14 @@ A collection of config files in order to easily deploy it on a Freebsd Jail.
 
 A simple adblock dns server. Simplified version of [https://vlads.me/post/setting-up-dns-adblocker-freebsd-jail/](https://vlads.me/post/setting-up-dns-adblocker-freebsd-jail/)
 
-**host requisites**
+### **PRE INSTALL**
 
 * csh shell (Available by default in FreeBSD)
 
 * wget and diff to compare files if required
 
 	```Console
-	pkg install wget diffutils
+	root@host:/ # pkg install wget diffutils
 	```
 
 * An empty or existing jail
@@ -23,11 +23,65 @@ A simple adblock dns server. Simplified version of [https://vlads.me/post/settin
 	```
 
 
-**Use it**
+### **INSTALL**
 
 Just launch .sh script passing an existing jail name as argument
 
 ```console
-./dnsmasq_jail.sh jailName
+user@host:/ # ./dnsmasq_jail.sh jailName
+```
+
+### **POST INSTALL**
+
+Pass port from jail to host with pf or prefered firewall. 
+Example for /etc/pf.conf
+
+```Shell
+dns="{53}"
+rdr on $ext_if proto udp from any to any port $dns-> $jail_ip
+```
+Check config on jail
+
+```console
+user@host:/ #  jexec jail
+user@jail:/ # dnsmasq --test
+dnsmasq: syntax check OK.
+```
+For test before launch service
+
+On Jail
+
+```console
+user@jail:/ # dnsmasq -d -q
+```
+
+On host dns query asking to jail ip
+
+```console
+user@host:/ # drill freebsd.org @192.168.35.4
+;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 15521
+;; flags: qr rd ra ; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 
+;; QUESTION SECTION:
+;; freebsd.org.	IN	A
+
+;; ANSWER SECTION:
+freebsd.org.	3600	IN	A	96.47.72.84
+
+;; AUTHORITY SECTION:
+
+;; ADDITIONAL SECTION:
+
+;; Query time: 71 msec
+;; SERVER: 192.168.35.4
+;; WHEN: Mon Aug  9 13:53:29 2021
+;; MSG SIZE  rcvd: 45
+```
+
+Finally, launch dnsquery service on jail
+
+```console
+user@host:/ # jexec jail
+user@jail:/ # service dnsmasq start
+Starting dnsmasq.
 ```