Describe the following terms that are used in the iptables command:
1. Chain
2. Postrouting
3. Prerouting
1. A chain is a list of rules which can match a set of packets. Each rule specifies what to do with a packet that matches. Each table specifying a set of rules is constituted of several such chains which can be either built-in chains or user-defined chains.
2. This is an example of the built-in chains provided in the netfilter infrastructure. The rules in this chain are applied to datagrams that are going to the public network. The main rule is SNAT, which specifies how the source address of an outgoing IP datagram should be modified. All future packets in the connection also get mangled in a similar way.
3. This is another example of one of the built-in chains provided in the netfilter infrastructure on Linux system. The rules in this chain are applied to datagrams coming from the public network.
You might also like to view...
The fourth element of an array named Colors is identified as:
a. Colors[0] b. Colors[3] c. Colors[4] d. Colors[5]
The SQL ________ keyword is used to sort the records by a certain field in either ascending or descending order
Fill in the blank(s) with correct word
Computer ________ are malicious programs installed on your computer without your knowledge and are programmed to destroy or damage data on your computer
Fill in the blank(s) with correct word
A subclass can directly access protected members of a superclass.
Answer the following statement true (T) or false (F)