Chapter 7 - 03 - Understand Different Types of Firewalls and their Role - 01_ocred_fax_ocred.pdf

Certified Cybersecurity Technician Exam 212-82 Network Security Controls — Technical Controls Module Flow Discuss Essential Network...

Certified Cybersecurity Technician Exam 212-82 Network Security Controls — Technical Controls Module Flow Discuss Essential Network Understand Different Types of 0© 0 0 Security Protocols Proxy Servers and their Benefits Discuss Fundamentals of VPN Discuss Security Benefits and its importance in Network of Network Segmentation Security Understand Different Types Discuss Other Network Security of Firewalls and their Role Controls Understand Different Types Discuss Importance of Load of IDS/IPS and their Role Balancing in Network Security Understand Different Types Understand Various of Honeypots Antivirus/Anti-malware Software Copyright© by E L All Rights Reserved. Reproduction is Strictly Prohibited Understand Different Types of Firewalls and their Role This section describes firewall and different types of firewall technologies available. This includes packet filtering, stateful multilayer inspection, circuit-level gateway, application-level gateway, application proxy, network address translation (NAT), virtual private network (VPN), and next generation firewall (NGFW). Module 07 Page 757 Certified Cybersecurity Technician Copyright © by EG-Council All Rights Reserved. Reproduction is Strictly Prohibited. Certified Cybersecurity Technician Exam 212-82 Network Security Controls - Technical Controls What is a Firewall? L3 ° Q Firewall is a software or - hardware, or a s‘“‘""l '""". ’ ‘ Internet \ combination of both, e which is generally used to separate a protected Beereiteryedtineacd Trafic s stopped because it network from an S—— unprotected public Allowed Tratfic Outto Intemet Salnad’ 20202022 | See——— P NP > Firewall Q It monitors and filters the incoming and outgoing R traffic of the network s et. and prevents A "’A“":‘:"s“::" —— unauthorized access to DR B R Allowed Traffic private networks Firewall What is a Firewall? A firewall is a software or hardware, or a combination of both, which is generally used to separate a protected network from an unprotected public network. A firewall is a secure, reliable, and trusted device placed in between private and public networks. It helps in protecting a private network from the users of a different network. It monitors and filters the incoming and outgoing traffic of the network and prevents unauthorized access to private networks. It has a set of rules for tracing the incoming and outgoing network traffic and is also responsible for allowing or denying traffic to pass through. These criteria are the rules and restrictions configured on the firewall and they may vary from one type of firewall to another. Generally, a firewall filters traffic based on the type of traffic, source or destination addresses, protocols, and ports. Module 07 Page 758 Certified Cybersecurity Technician Copyright © by EG-Council All Rights Reserved. Reproduction is Strictly Prohibited. Certified Cybersecurity Technician Exam 212-82 Network Security Controls — Technical Controls Secure Private Network Internet Network Restricted Traffic Traffic is stopped because it does not meet specific criteria Allowed Traffic Out to Internet Firewall Unknown Only traffic from internet @ < Traffic Traffic meeting specified criteria are criteriaare ‘ EEEEEEEEEEEEEE allowed to pass through Accessto Specific @ » Specified Specified Resources Allowed Traffic >STTTTETY TITTIEEITIF T TP IR >TITTRIPTTRIIR Firewall Figure 7.42: Working of a firewall Typical use of firewalls: * To protect the private network applications and services on the internal network from the unauthorized traffic and the public network. = To restrict the access of the hosts on the private network and the services of the public network. = To support a network address translation, which helps in using private IP addresses and to share a single internet connection. Module 07 Page 759 Certified Cybersecurity Technician Copyright © by EG-Gouncil EC-Council All Rights Reserved. Reproduction is Strictly Prohibited.