7 Install Some Software

Now we install a few packages that are needed later on. Run

apt-get install binutils cpp cpp-4.0 fetchmail flex gcc gcc-4.0 libarchive-zip-perl libc6-dev libcompress-zlib-perl libdb4.3-dev libpcre3 libpopt-dev linux-kernel-headers lynx m4 make ncftp nmap openssl perl perl-modules unzip zip zlib1g-dev autoconf automake1.9 libtool bison autotools-dev g++

(This command should go into one line!)

8 Quota

To install quota, run

apt-get install quota

Edit /etc/fstab to look like this (I added ,usrquota,grpquota to partition /dev/sda1 (mount point /; your device name might be /dev/hda1 or similar):

vi /etc/fstab

# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/sda1       /               ext3    defaults,errors=remount-ro,usrquota,grpquota 0       1
/dev/sda5       none            swap    sw              0       0
/dev/hdc        /media/cdrom0   udf,iso9660 user,noauto     0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0

To enable quota, run these commands:

touch /quota.user /quota.group
chmod 600 /quota.*
mount -o remount /
quotacheck -avugm
quotaon -avug

9 DNS Server

Run

apt-get install bind9

For security reasons we want to run BIND chrooted so we have to do the following steps:

/etc/init.d/bind9 stop

Edit the file /etc/default/bind9 so that the daemon will run as the unprivileged user bind, chrooted to /var/lib/named. Modify the line: OPTIONS=" -u bind" so that it reads OPTIONS="-u bind -t /var/lib/named":

vi /etc/default/bind9

OPTIONS="-u bind -t /var/lib/named"
# Set RESOLVCONF=no to not run resolvconf
RESOLVCONF=yes

Create the necessary directories under /var/lib:

mkdir -p /var/lib/named/etc
mkdir /var/lib/named/dev
mkdir -p /var/lib/named/var/cache/bind
mkdir -p /var/lib/named/var/run/bind/run

Then move the config directory from /etc to /var/lib/named/etc:

mv /etc/bind /var/lib/named/etc

Create a symlink to the new config directory from the old location (to avoid problems when bind is upgraded in the future):

ln -s /var/lib/named/etc/bind /etc/bind

Make null and random devices, and fix permissions of the directories:

mknod /var/lib/named/dev/null c 1 3
mknod /var/lib/named/dev/random c 1 8
chmod 666 /var/lib/named/dev/null /var/lib/named/dev/random
chown -R bind:bind /var/lib/named/var/*
chown -R bind:bind /var/lib/named/etc/bind

We need to modify the startup script /etc/init.d/sysklogd of sysklogd so that we can still get important messages logged to the system logs. Modify the line: SYSLOGD="-u syslog" so that it reads: SYSLOGD="-u syslog -a /var/lib/named/dev/log":

vi /etc/init.d/sysklogd

[...]
SYSLOGD="-u syslog -a /var/lib/named/dev/log"
[...]

Restart the logging daemon:

/etc/init.d/sysklogd restart

Start up BIND, and check /var/log/syslog for errors:

/etc/init.d/bind9 start

10 MySQL

In order to install MySQL, we run

apt-get install mysql-server mysql-client libmysqlclient12-dev

We want MySQL to listen on all interfaces, not just localhost, therefore we edit /etc/mysql/my.cnf and comment out the line bind-address = 127.0.0.1:

vi /etc/mysql/my.cnf

[...]
#bind-address           = 127.0.0.1
[...]

Then we restart MySQL:

/etc/init.d/mysql restart

Now check that networking is enabled. Run

netstat -tap

In the output you should see a line like this one:

tcp        0      0 *:mysql                 *:*                     LISTEN     4997/mysqld

Run

mysqladmin -u root password yourrootsqlpassword
mysqladmin -h server1.example.com -u root password yourrootsqlpassword

to set a password for the user root (otherwise anybody can access your MySQL database!).