Network layer firewall has two sub-categories called ____________(a) stateful firewall and stateless firewall(b) bit oriented firewall and byte oriented firewall(c) frame firewall and packet firewall(d) network firewall and data firewallThe question was asked in examination.I need to ask this question from Security In The Internet in section Networking of Computer Network

Network layer firewall has two sub-categories called ____________(a) s

1.	Network layer firewall has two sub-categories called ____________(a) stateful firewall and stateless firewall(b) bit oriented firewall and byte oriented firewall(c) frame firewall and packet firewall(d) network firewall and data firewallThe question was asked in examination.I need to ask this question from Security In The Internet in section Networking of Computer Network
Answer» The correct choice is (a) STATEFUL firewall and STATELESS firewall Explanation: Most network layer firewalls can operate as stateful or stateless firewalls, creating two subcategories of the standard network layer firewall. Stateful firewalls have the advantage of being able to track packets over a period of time for greater analysis and accuracy — but they require more memory and operate more slowly. Stateless firewalls do not analyze past traffic and can be useful for systems where SPEED is more IMPORTANT than SECURITY, or for systems that have very specific and limited needs. For example, a computer that only needs to connect to a particular backup server does not need the extra security of a stateful firewall.

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