Build an openDNS recursive resolver DNS using Bind Rumi, December 18, 2021August 9, 2023 It’s a small thing, but someone might feel it to be useful of running a public DNS like google has 8.8.8.8. You actually can build a recursive DNS and serve to the world (instead to your network user only! 🙂 ) Install Bind apt install bind9 bind9utils -y It’s pretty simple, all you need is the have your bind package installed and some very basic configurations like below- nano /etc/bind/named.conf include "/etc/bind/named.conf.options"; include "/etc/bind/named.conf.local"; include "/etc/bind/named.conf.default-zones"; nano /etc/bind/named.conf.options options { directory "/var/cache/bind"; dnssec-validation auto; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; allow-query { any; }; allow-recursion { any; }; allow-query-cache { any; }; // additional-from-cache { any }; rate-limit { responses-per-second 500; }; }; Keep the other 2 configuration files as it is. Restart bind/named services. Point your laptop Ethernet DNS1 configuration with the server IP, if everything’s a’right, you should be able to browse sites. If you don’t- check if any firewall or rule is blocking port 53 both TCP and UDP are open. Now let’s Test: You can open up a browser and go to http://myresolver.info and it will output your public IP address and what DNS recursive resolver you seem to be using. Related Administrations Configurations (Linux) BindDNSNamedPublic DNSRecursvive
Neighbour table overflow February 10, 2012 If you have a big network with the hundreds of hosts you can expect “Neighbour table overflow” error which occurs in large networks when there are two many ARP requests which the server is not able to reply. For example you’re using server as a DHCP server, cable modems provisioning,… Read More
Icinga Sample Host cfg file to monitor Windows Server December 8, 2011December 8, 2011 define host{ use windows-server ; Inherit default values from a template host_name blk-smsgw ; The name we're giving to this host alias Windows Server ; A longer name associated with the host address 10.10.10.1 ; IP address of the host } definehostgroup{ alias Windows Servers ; Long name… Read More
Cacti on Debian (Updated) April 19, 2015April 19, 2015 Downloading Cacti You can download the newest version of Cacti from its website. wget http://www.cacti.net/downloads/cacti-0.8.7b.tar.gz Installing Cacti Install apache webserver with php support, mysql database server, snmp, some php modules and rrdtool. apt-get install apache2 libapache2-mod-php5 php5 php5-cli php5-mysql php5-gd php5-snmp mysql-client mysql-server libmysqlclient15-dev snmp snmpd rrdtool Add a user… Read More