Code: p313 Severity: Warning
Description: Backdoor.AckCmd is a Trojan Horse that uses TCP ACK segments to communicate. This Trojan may bypass firewalls that do not keep track of the session state in a TCP transaction. Impact: Possible theft of data and control of the targeted machine leading to a compromise of all resources the machine is connected to. This Trojan also has the ability to delete data, steal passwords and disable the machine. Other versions are capable of launching DDoS attacks. Corrective: A machine reboot is required to clear the existing process from running in memory. In addition, the use of a firewall that correctly checks the state of a TCP session is recommended.
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