Summarises the firewall protocols, Computer Network Security

Assignment Help:

Your rules should ensure that Internet access will be restricted to the following:

Only the following services will be permitted as OUTBOUND traffic (to the Internet from the DMZ or intranet):

  • HTTPS and HTTP (from the intranet). Note: it is assumed that external Web access provides the ability to connect to the local Secure Web Server - no additional firewall rules are required.
  • SMTP (from the Mail Server)

Only the following services will be permitted as INBOUND traffic (to the DMZfrom the Internet):

  • HTTPS (to the Secure Web Server)
  • SMTP (to the Mail Server)

Access between the Intranet and the DMZ will be restricted to the following.
Only the following services will be permitted as OUTBOUND traffic (to the DMZ from the intranet):

  • POP3 (from the intranet to the Mail Server)
  • SSH (from the system administrators' subnet (10.2.5.0) to all DMZ servers)

Only the following services will be permitted as INBOUND traffic (from the DMZ to the intranet) traffic:

  • Oracle (from the Secure Web Server)

The firewall is not to be accessible remotely on any interface - i.e. it should not accept connections on any of its IP addresses EXCEPT on its VPN port on the external interface.

Submission Requirements:

You are required to develop two sets of rules for the firewall.  One will process traffic travelling between the Internet to the DMZ and Intranet. The other will process traffic travelling between the Intranet and the DMZ.  You need to also explain what each rule does.The Following summarises the protocols and port numbers you may need to use:

Summary of the relevant Port Numbers:

Port Number

Protocol

1521

Oracle (SQLNet)

22

SSH

25

SMTP

443

HTTPS

80

HTTP

110

POP3

445

SMB

4500

VPN Tunnel


Related Discussions:- Summarises the firewall protocols

Routing tables and address masks, ROUTING TABLES AND ADDRESS MASKS Add...

ROUTING TABLES AND ADDRESS MASKS Additional information is saved in routing table. Destination is kept as network address. Next hop is saved as IP address of router. Address m

Describe the function of a tap in wmns, Question: (a) A Wireless Mesh N...

Question: (a) A Wireless Mesh Network (WMN) is a communications network made up of radio nodes organized in a mesh topology. i. Describe the function of a TAP in WMNs. ii.

Cyclic redundancy check (crc), CYCLIC REDUNDANCY CHECK (CRC) To activa...

CYCLIC REDUNDANCY CHECK (CRC) To activate a network system to check move error without increasing the amount of information in every packet another most successful method is m

Security and basics steps in writing thesis, how can i start thesis? Please...

how can i start thesis? Please mention so of examples?

Host-based ids, Host-Based IDS A host-based IDS (HIDS) resides on a part...

Host-Based IDS A host-based IDS (HIDS) resides on a particular computer or server and monitors activity only on that system. HIDS also called as system integrity verifiers as th

E-commerce, briefly expslain type of e-commerce

briefly expslain type of e-commerce

Project, Network diagram for a mediacal care

Network diagram for a mediacal care

Calculate the dynamic range of the 16-bit scanner, You are hired as a consu...

You are hired as a consultant to help design a digital library in which books are scanned and stored digitally and made available to users of the World Wide Web. Assume that the li

Find the capacity of the wcdma, Question: (a) Describe the term interfe...

Question: (a) Describe the term interference in the space, time, frequency, and code domain. (b) Consider a 1 G - AMPS: 824-849 MHz (forward) ; 869-894 MHz (reverse). B

Representation of a tcp header, (a) Figure is a representation of a TCP hea...

(a) Figure is a representation of a TCP header. For each of the fields lettered from A to G, state the name of the field and provide a brief explanation for the function of each fi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd