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 the area, specifically in Blocks L and M, in exchange for Brunei giving its claim over Limbang. His comments followed the announcement by Murphy Oil Corp which said that its production sharing contract with Petronas for two petroleum blocks which were situated within Brunei's EEZ claim, had been terminated because they were "no longer a part of Malaysia". In response, Petronas issued a statement on 1 May 2010 confirming that it had terminated its production sharing contracts with its subsidiary Petronas Carigali Sdn Bhd and Murphy Sabah Oil Co Ltd as the two production blocks were no longer Malaysian territory.