Showing posts with label centos 6. Show all posts
Showing posts with label centos 6. Show all posts

Friday, March 15, 2013

Installing nslookup, whois and host on Centos Version 6.*

So you've just run a barebones installation of CentOS 6, and you run a host command to check DNS resolution and you get the following:

whois: command not found

By default the barebones CentOS installation lacks even the most basic network diagnostic tools. Use yum to install the following packages to get a few basic tools back on your server:

yum install bind-utils 

(installs nslookup and host)

yum install jwhois

(installs whois)

RAT Bastard

Earlier this week, several servers I maintain were targeted by automated attempts to upload a remote access trojan (RAT). The RAT is a simpl...