Network security measures are critical in maintaining a network; attacks that destroy the connection system between linked devices are incredibly harmful. To achieve network security, we must occasionally be uncomfortable with its use; this is typically a factor to consider when establishing a network security system. DOS (Denial of Service) attacks can be detected using the WIDS (Wireless Intrusion Detection System) approach. Implementing the Linux operating system with Snort as a sensor engine and Iptables as an attack handler can help protect wireless networks from potential threats. A WAN (Wide Area Network) network is constructed within the system configuration to reflect the test. The findings of the analysis of each test show that every action made by the attacker on the network can be identified, allowing for a remedy before more damage occurs.

The calculation of the carrying capacity of urban settlements is intended to determine the availability and status of environmental aspects that are utilized by the community. This study aims to examine the availability of environmental support aspects in Jebres District, Surakarta City through the das sein and das sollen approaches. The results of this study indicate that the availability of settlements and supporting aspects in the Jebres District are still able to support the demand for housing in 2018 and projections until 2055. Analysis through the expectation approach (das sein) for 100% decent settlements and the quality of the supporting aspects capable has not been fully realized concretely (das sollen). The availability of green open space (RTH) in Jebres District also does not meet the standards set by the government (30%) where the total area of ​​green open space in Jebres District is 23% of the total. The results of this study are related to the 3rd, 4th and 11th environmental principles. Keywords: carrying capacity, das sein-das sollen, environmental principles, green open space, settlements.

Rembang zone karst area stretches from Central Java to Madura Islands. This area is the most significant water or groundwater basin (CAT) area in Rembang Regency, often known as Watuputih Mountains or Karst Area. Watuputih Groundwater Basin is a karst area that is characterized by the formation of several caves. Rambut Cave is one of the caves in Watuputih area located to the east of Watuputih with coordinate’s point −6.8783, 111.5534. There are seven types of flora found in the Rambut Cave, namely Horseshoe Bats, Bent-Wing Bats, Ants, Geckos and Crickets, Forest Grasshoppers, and Snails. While the flora was found, there are six types of Bauhinia scandens, Suweg, Mahogany, Drypetes littoralis, Yellow Palm, and Teak trees. The study results obtained the Flora Diversity Index Value H=0.687, which belongs to the low category, and the value of Fauna Diversity Index H’=1.414, which belongs to the medium category.

Abstract. Hidyarko AIF, Gayatri AC, Rifa VA, Astuti A, Kusumaningrum L, Mau YS, Rudiharto H, Setyawan AD. 2021. Komodo National Park as a conservation area for the komodo species (Varanus komodoensis) and sustainable ecotourism. Intl J Trop Drylands 5: 27-40. Komodo National Park (East Nusa Tenggara Province, Indonesia) is a biodiversity conservation area with the main aim to protect the original habitat and remaining population of Komodo dragon species (Varanus komodoensis Ouwens, 1912). Nonetheless, the area also has great potential as one of the objects of tourist attraction. The purpose of this study is to see the sustainable function of conservation and tourism in Komodo National Park. Komodo National Park covers land area of more than 603 square kilometers and 1214 square kilometers of marine habitat. The land habitats have 277 species of animals while the marine habitats have 253 species of corals, more than 1,000 species of fish, and 25 species of whales and dolphins. One of the main attractions of the Komodo National Park area is the ancient giant reptile of the Komodo dragon (Varanus komodoensis). The tourism management of Komodo National Park (KNP) is currently done through an ecotourism approach. The tourism zone is determined based on part of the Komodo National Park which has the potential for land and marine tourism with a diversity of flora and fauna. The participation of communities living around KNP in the ecotourism business can increase local economics and conservation awareness; as well as their participation in conservation. Meanwhile, the factors that hinder community participation in tourism development are limited budget, apathy and low public awareness, fluctuations in tourist visits, and difficulties in marketing ecotourism products.

Abstract. Nur AAI, Arifiani KN, Ramadhandi AR, Sabrina AD, Nugroho GD, Kusumaningrum L, Ramdhun D, Bao TQ, Yap CK, Budiharta S, Setyawan AD. 2022. Estimation of aboveground biomass and carbon stock in Damas Beach, Trenggalek District, East Java, Indonesia. Indo Pac J Ocean Life 6: 103-109. Vegetation plays a vital role in providing environmental services in the form of storing carbon which can mitigate climate change. This study aimed to calculate Aboveground Biomass (AGB) and carbon stock in Damas Beach, Trenggalek District, East Java Province, Indonesia using an allometric equation. Biomass and carbon data at a tree (dbh >20 cm) and pole (dbh 10-20 cm) levels were collected using sampling plots distributed randomly at three stations, namely mangrove vegetation (Station I), coconut plantation (Station II), and agroforestry (Station III). The results showed that across the three research stations, there were a total of 23 plant species classified as tree and pole levels. At tree level, Rhizophora stylosa Griffith had the highest carbon stock with a value of 85.48 MgC/ha, while the lowest value was Nypa fruticans Wurmb with 0.02 MgC/ha. Similarly, at the pole level, the species with the highest carbon stock was R. stylosa, with a value of 65.88 MgC/ha, and the lowest was Theobroma cacao L. with 0.11 MgC/ha. The mangrove vegetation (Station I) had the highest carbon stock value of 200.53 MgC/ha. In contrast, the coconut plantation vegetation (Station II) has the lowest total carbon stock, with a value of 84.68 MgC/ha. Conservation and management need to be improved in the Damas Beach area because if the area is disturbed, the ability of vegetation to absorb carbon will decrease.