Securing System for IP Enabled Firewall

Running head: INFORMATION SECURITY 1
Information Security
[Author Name(s), First M. Last, Omit Titles and Degrees]
[Institutional Affiliation(s)]
Author Note
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INTRODUCTION

Running head: INFORMATION SECURITY 2
The assignment in this document is on securing system for the IP enabled firewall. In this
assignment, deliverable include the configuration and the testing of our firewall. The assignment
uses IP tables to deliver the task. The second section of the assignment focuses on discussing the
various advantages and disadvantages that normal firewall has over the IP Tables
implementation. The last section provides an overview of a circuit relay firewall, the various
roles it play and the significance it has in overall securing of communication
1. Reject all ssh packages
The command below is used
# iptables –A INPUT –p tcp - -dport ssh –j REJECT
# iptables –A INPUT –p tcp - -dport ssh –j REJECT will reject all ssh packages
Here, two policies get applied, the INPUT and the OUTPUT, the REJECT option will
reject the above policy applied.
# iptables –L is used to show the results as shown in the screenshot below

Running head: INFORMATION SECURITY 3
2. Allow ssh remote connections
Once the reject ssh policy, the following command will be used to allow ssh remote
connection
# iptables –A INPUT –i eth0 –p tcp - -dport ssh –m state - -state NEW, ESTABLISHED
–j ACCEPT
The result below is shown using the command # iptables –L