My final work - assignment related to network architecture PDF

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ASSIGNMENT 2Securing system using IPTable firewallASHANDEEP KAURATMC campus SydneyInstalling the ip tablesService xinetd statusService apache2 statusAns 1 Reject all incoming and outgoing ping packets.Ans 2 Reject all incoming telnet packets and allow all outgoing telnet packets.Ans 5. Allow packets...

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ASHANDEEP KAUR ATMC campus Sydney

ASSIGNMENT 2 Securing system using IPTable firewall

Assignment 2(30362749)

Installing the ip tables

Service xinetd status

1

Assignment 2(30362749)

Service ssh status

Service mysql status

2

Assignment 2(30362749)

Service apache2 status

Ans 1 Reject all incoming and outgoing ping packets.

3

Assignment 2(30362749)

Ans 2 Reject all incoming telnet packets and allow all outgoing telnet packets.

4

Assignment 2(30362749)

Ans 3. Reject all traffic coming to MySQL server.

Ans 4 Block incoming packets to the IP address of your virtual machine

5

Assignment 2(30362749)

Ans 5. Allow packets inbound to port 80 (inbound) and reject packets going out (outbound) through port 80.

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Assignment 2(30362749)

Advantages of firewalls with iptables       

Iptables are easily accessible from the Linux firewall that is why it is more reliable software of the firewall. It allows us to block the data incoming and outgoing packet by blocking the ports. Blocking process is quite easy as we can choose services and port numbers directly. Instead of logging, forwarding we can simply allow or decline the services according to our need. Th overall concept is pretty much basic and understandable. Linux kernel firewalls allows us to filter the packets by using filtering approaches. It does all the customization all the filtration done on router level. (2021)

Disadvantages of firewalls with iptables    

The process of filtering the large packet is too big such as for UDP which includes lots of data. Another point is processing packets on protocol layer only, it cannot happen on application layer. Security threat because it is bit hard to prevent it from external malwares if user using services outside of the firewall. As I mentioned it is suitable for TCP connected services only. 7

Assignment 2(30362749) 

Complicated network architecture because of complex packet filtering rules. . (2021)

Suggestions to overcome the disadvantages     

Installing antimalware application can prevent the system from being attacked by outside malwares. By using regular iptables can help to make the process bit easy. Learning about the use of firewall with appropriate services on different layers which are appropriate for them would be the best way. Dividing the largest packet over another service can help to reduce the load on one excecuter.

References 2021. [ebook] Available at: [Accessed 13 May 2021].

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