{'created': '2020-10-19T16:48:08.241Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': 'Adversaries may bridge network boundaries by modifying a '
                'network device’s Network Address Translation (NAT) '
                'configuration. Malicious modifications to NAT may enable an '
                'adversary to bypass restrictions on traffic routing that '
                'otherwise separate trusted and untrusted networks.\n'
                '\n'
                'Network devices such as routers and firewalls that connect '
                'multiple networks together may implement NAT during the '
                'process of passing packets between networks. When performing '
                'NAT, the network device will rewrite the source and/or '
                'destination addresses of the IP address header. Some network '
                'designs require NAT for the packets to cross the border '
                'device.  A typical example of this is environments where '
                'internal networks make use of non-Internet routable '
                'addresses.(Citation: RFC1918)\n'
                '\n'
                'When an adversary gains control of a network boundary device, '
                'they may modify NAT configurations to send traffic between '
                'two separated networks, or to obscure their activities.  In '
                'network designs that require NAT to function, such '
                'modifications enable the adversary to overcome inherent '
                'routing limitations that would normally prevent them from '
                'accessing protected systems behind the border device.  In '
                'network designs that do not require NAT, adversaries may use '
                'address translation to further obscure their activities, as '
                'changing the addresses of packets that traverse a network '
                'boundary device can make monitoring data transmissions more '
                'challenging for defenders.  \n'
                '\n'
                'Adversaries may use [Patch System '
                'Image](https://attack.mitre.org/techniques/T1601/001) to '
                'change the operating system of a network device, implementing '
                'their own custom NAT mechanisms to further obscure their '
                'activities.',
 'external_references': [{'external_id': 'T1599.001',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1599/001'},
                         {'description': 'IETF Network Working Group. (1996, '
                                         'February). Address Allocation for '
                                         'Private Internets. Retrieved October '
                                         '20, 2020.',
                          'source_name': 'RFC1918',
                          'url': 'https://tools.ietf.org/html/rfc1918'}],
 'id': 'attack-pattern--4ffc1794-ec3b-45be-9e52-42dbcb2af2de',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'defense-evasion'}],
 'modified': '2025-10-24T17:48:46.071Z',
 'name': 'Network Address Translation Traversal',
 'object_marking_refs': ['marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168'],
 'revoked': False,
 'spec_version': '2.1',
 'type': 'attack-pattern',
 'x_mitre_attack_spec_version': '3.3.0',
 'x_mitre_deprecated': False,
 'x_mitre_detection': '',
 'x_mitre_domains': ['enterprise-attack'],
 'x_mitre_is_subtechnique': True,
 'x_mitre_modified_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'x_mitre_platforms': ['Network Devices'],
 'x_mitre_version': '1.2'}