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014.01.58.Setting Firewall Rules

2. What does "iptables -P FORWARD DROP," do? how does it affect the packet-filtering system

pravjot February 2024

014.01.58.2. What is the purpose of the command "iptables -P FORWARD DROP," and how does it affect the packet-filtering system?
This question assesses the candidate's knowledge of setting default policies for firewall chains using the iptables command and understanding the implications of such configurations.
gaurav133232 February 2024

The DROP policy tells the kernel to discard the packet. To set the policy on a chain, we use iptables -P like this: iptables -P FORWARD DROP.
It tells the kernel to discard all the packets from the FORWARD chain.
mohdmohsinkhanee February 2024

The DROP policy instructs the kernel to discard packets. To set this policy on a specific chain, the command iptables -P is used.
For example, iptables -P FORWARD DROP sets the DROP policy for the FORWARD chain, directing the kernel to discard all packets in that chain.

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