This Chain applies for all packets that are addressed to the firewall INPUT OUTPUT FORWARD This chain applies for all packets originating from firewall and going out of the server INPUT ⒸOUTPUT FORWARD This chain applies for all packets passing through the firewall from other hosts on the network. The host with iptables is neither the source nor destination of the packet: mainly used to route packets through the machines on the network. INPUT OUTPUT FORWARD

This Chain applies for all packets that are addressed to the firewall INPUT OUTPUT FORWARD This chain applies for all packets originating from firewall and going out of the server INPUT ⒸOUTPUT FORWARD This chain applies for all packets passing through the firewall from other hosts on the network. The host with iptables is neither the source nor destination of the packet: mainly used to route packets through the machines on the network. INPUT OUTPUT FORWARD

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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When a client wishes to establish a connection to an object that is reachable only via a firewall, it must open a TCP connection to the appropriate SOCKS port on the SOCKS server system. Even if the client wishes to send UDP segments, first a TCP connection is opened. Moreover, UDP segments can be forwarded only as long as the TCP connection remains opened. Why?
Tasks: Part A: Develop a UDP/IP server program in java that waits for clients to server. The server responds to the client with one of the following based on client’s request: Export secret key generated using KeyGenerator Export Text and Message Digest Export Text and Digital Signature Send original text for the encrypted text received from client Part B: Develop a UDP/IP client program that make request secret key, Message Digest, Digital Signature and original text by sending the encrypted text to server program developed (in Part A). This program will display the various objects received from server on its console.
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