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AckCmd is a special kind of remote Command Prompt for Windows 2000. It communicates using only TCP ACK segments. This way the client component is able to directly contact the server component through a firewall in some cases. More information can be found in the ACK Tunneling Trojans paper.

AckCmd is a special kind of remote Command Prompt for Windows 2000. It communicates using only TCP ACK segments. This way the client component is able to directly contact the server component through a firewall in some cases. More information can be found in the ACK Tunneling Trojans paper.