Indonesia–Malaysia border crossings. Illegal immigrants are also known to use such crossings. There are numerous scheduled sea crossings between Indonesia and Malaysia, mostly between ports in the former's island of Sumatra and Peninsula Malaysia. Here is a list of ports (Indonesian port followed by the Malaysian port) where scheduled boat services operate as of April 2008: Sumatra-Peninsula Malaysia North Kalimantan-Sabah Indonesia–Malaysia border The border between the Southeast Asian countries of Indonesia and Malaysia consist of both a land border separating the two countries' territories on the island of Borneo as well as maritime boundaries along the length of the Straits of Malacca,
Brunei–Malaysia border Brunei–Malaysia border The border between Brunei and Malaysia consist of a 481.3 km land border and substantial lengths of maritime borders stretching from the coastline of the two countries to the edge of the continental shelf in the South China Sea. Except for its South China Sea coastline, Brunei is entirely surrounded by Malaysia's Sarawak state and the country only shares a land boundary with Malaysia. Brunei's unique shape where its territory consists of two non-contiguous portions results in its border with Malaysia being broken into two segments. Brunei's 200 nautical mile continental shelfclaim makes it a claimant of a