Abstract: The boundary between West Kalimantan and region of Sarawak (Malaysia) is along 866 Km traversed by 50 footpaths (rat paths) in 55 villages (http://kalimantan.menlh.go.id , 2012). The length of the border region makes both societies are able to across borders more freely. Historically, social relations between Jagoy Babang (Indonesia) with Sarawak (Malaysia) is a cognate bound by very close socio-cultural relations through the bound of marriage and blood ties. Along the border community issues there is a duality of perception boundaries between government regulation with peoples' customary law under the auspices of the board of the Dayak. On one side, the boundary regions are bounded by the legislation between the two countries, but on the other hand, it has had indigenous customary law in determiningboundaries. Wisdom of local communities border could be seen from customary law governing boundaries.