Showing posts with label whois. Show all posts
Showing posts with label whois. 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...