Give the following entry on the /etc/hosts.allow
==============================
sshd : ALL EXCEPT 192.168.0.1
==============================
Reference :  http://linuxhelp.blogspot.com/2005/10/using-tcp-wrappers-to-secure-linux.html

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 Reference:- http://www.sans.org/reading_room/whitepapers/unix/331.php
A backup strategy is more complex then creating a redundant copy of disk storage and considering the strategy a success. A successful backup strategy must detail how the backup media are rotated, how the media are archived, how the system will be recovered, and what the backup software will do to create the backup. Although all parts of the backup strategy are equally important, this paper will focus on the backup script and will detail a flexible backup script …

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The purpose of this chapter is to give a brief technical overview of Amanda. We want you to understand how Amanda works, how it is different from other backup software, and how it can help you solve your data protection requirements. On the other hand, we don’t want to overwhelm you with technical details that could be very specific to a particular setup or backup policy. Throughout this section we provide links to the websites where you can find up-to-date …

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#!/bin/sh
# must run as root
# assumes bind is installed on a linux box
# this script has very few sanity checks
# files modified are :
# /etc/named.conf $PZPATH$DOMAIN
# see http://www.ripserve.com/gpl/ for latest version
# the following variables need to be set
PROVIDER=”pearlin.info”
PZPATH=”/etc/named/pz/”
NS1=”darling”
NS2=”blofeld”
MX=$NS2
IP=”62.25.97.28″
TXT=”Ripserve Ltd. London”
if [ $# -lt 1 ]; then
echo “Usage: $0 domain1 domian2 …”
exit 1
fi
USER=$(id | grep root | wc -l)
if [ $USER -eq 0 ]
then
echo “Run this as root to add domains to DNS”
exit 1
fi
mainfunction () {
#create pz file
cat <<EOF > …

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