Abstract
The use of malicious communication channels is becoming an integral part of malicious software agents and tools including those employed for remote access tools and distributed denial of service tools. These malicious software agents use the unused fields of ICMP and TCP/IP packets to establish malicious communication channels. Since TCP/IP comprises 96% of the traffic, the paper identifies the idle fields in TCP/IP and ICMP messages and proposes the use of a stateless model to protect against the misuse of these unused fields. This paper also presents the advantages of using a stateless model over firewalls and IDS. The proposed modifications are recommended highly for the end hosts and it has been shown that the proposed modifications are computationally inexpensive.
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