COMPUTER NETWORKING

NETWORK SECURITY

FIREWALLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Check the alternative that presents the main focus of packet filters (iptables)
A
Make filtering (allow/deny) decisions based on packet header information.
B
Log all network traffic
C
Perform email filtering.
D
Filter log files.
E
Detect various attacks and intrusions, helping to protect the environment.
Explanation: 

Detailed explanation-1: -Static Packet Filter This type of firewall decides whether to accept or deny individual packets, based on examining fields in the packet’s IP and protocol headers.

Detailed explanation-2: -iptables is a user-space utility program that allows a system administrator to configure the IP packet filter rules of the Linux kernel firewall, implemented as different Netfilter modules. The filters are organized in different tables, which contain chains of rules for how to treat network traffic packets.

There is 1 question to complete.