Linux Server Administration: DNS & SSH Server, FTP User, DNS Robust, Web Services

Linux Server Administration

Table of Contents
Virtual Machine One – DNS & SSH Server..........................................................................3
DNS Sever.............................................................................................................................3
Configuring the Primary DNS Server...........................................................................5
Creating the Forward Zone File...................................................................................10
Creating the Reverse Zone File(s)................................................................................14
Checking the BIND Configuration Syntax..................................................................16
Restarting BIND.............................................................................................................20
Configuring the Secondary DNS Server......................................................................20
Configuring DNS Clients..............................................................................................24
Testing clients.................................................................................................................30
SSH Servers........................................................................................................................34
Installation......................................................................................................................35
Configuration.................................................................................................................38
Virtual Machine Two.............................................................................................................44
Remote File Access.................................................................................................................54
Create an FTP User.......................................................................................................59
Directory Permissions....................................................................................................62
Configure vsftpd.............................................................................................................63
Test FTP..........................................................................................................................69
Making DNS Robust..............................................................................................................69
Creating the Reverse Zone File(s)................................................................................72
Creating the Forward Zone File...................................................................................74
Checking the BIND Configuration Syntax..................................................................78
Restarting BIND.............................................................................................................82
Configuring the Secondary DNS Server......................................................................82
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Simple Web Services..............................................................................................................86
Configuring the Primary DNS Server.........................................................................89
Creating the Forward Zone File...................................................................................94
Creating the Reverse Zone File(s)................................................................................98
Checking the BIND Configuration Syntax................................................................100
Configuring the Secondary DNS Server....................................................................104
Configuring DNS Clients............................................................................................108
Creating SSL certificate..............................................................................................114
References.............................................................................................................................117
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Virtual Machine One – DNS & SSH Server
DNS Sever
Here, we will install the SSH and DNS server on Virtual machine. These process are
illustrated as below,
3

4

Configuring the Primary DNS Server
Here, we will configure the primary DNS server. These are processes are shown below.
5

6

7