Self-configuring local area network security

At least one non-transitory machine readable storage medium, comprising computer-executable instructions carried on the machine readable storage medium, the instructions readable by a processor incorporated by an electronic security device, the instructions, when read and executed, causing the electronic security device to:

• assume an identity of a gateway device communicatively coupled to the electronic security device and resident in a same first network as the electronic security device, the gateway device configured to mediate communication between the first network and a second network, wherein assuming the identity of the gateway device is performed by altering an Address Resolution Protocol;
• present the identity to the second network;
• monitor traffic from the first network to the second network without substantially affecting a topology of the first network, wherein the electronic security device is configured to identify undesirable traffic;
• and
• implement a security policy, the security policy comprising instructions for handling the undesirable traffic;
• wherein the electronic security device is communicatively coupled to the first network and to the second network through the gateway device;
• and
• wherein the electronic security device is caused to, through the gateway device, present the identity to the second network, monitor traffic from the first network to the second network, and implement the security policy.

A method for providing electronic security to a first network, the method comprising:

• assuming, by an electronic security device, an identity of a gateway device communicatively coupled to the electronic security device and resident in the same first network as the electronic security device, the gateway device configured to mediate communication between the first network and a second network, wherein assuming the identity of the gateway device is performed by altering an Address Resolution Protocol;
• presenting, by the electronic security device, the identity to the second network;
• monitoring, by the electronic security device, traffic from the first network to the second network without substantially affecting a topology of the first network, wherein the electronic security device is configured to identify undesirable traffic;
• and
• implementing, by the electronic security device, a security policy, the security policy comprising instructions for handling the undesirable traffic;
• wherein the electronic security device is communicatively coupled to the first network and to the second network through the gateway device;
• and
• wherein presenting the identity to the second network, monitoring traffic from the first network to the second network, and implementing the security policy is performed through the gateway device.