Awareness and understanding of landforms and geomorphological effects of border regions is one of the most important initial measures for defense planning and defense use that neglecting these natural geostrategic phenomena can cause irreparable damage to defense control and management. The border region of the north-east of the country has long been under attack by Uzbek and Turkmen tribes, and due to its geographical nature, Iran has always been regarded as a rich and important region. On the other hand, given the strategic position of Iran in West Asia, environmental recognition and assessment of border areas is of great importance. In this study, by using topographic maps, aerial photos, satellite images and digital elevation model (DEM) geomorphological systems and landforms were identified in the area and they were classified and analyzed in Arc Map software database, then by SWOT method of each unit the geomorphologic landforms, including mountains, hills, mounds, gulls and straits were evaluated for passive defense and defense and security considerations. According to previous studies, the border between Iran and Turkmenistan is in the ridge of Hezar Masjid Mountains and Kopet Dagh, and it is also in the Ghulaman area on the banks of the Sumbar River. Therefore, the Sarani Strait and Bajgiran are of high strategic importance in terms of passive defense and security and defense arrangements. Along with the protection of the water resources to provide sustainable water security for the border guards of the country, the construction of water storage facilities on the Summar and Chandir rivers, which are flowing out of the country is highly important and by implementing the principle of passive defense it is possible to prevent from the conflict and challenge over the headwaters in the border areas in the future.