Judul: Analisis kinerja interkoneksi IPv4 dan IPv6 menggunakan mekanisme NAT-PT
Abstrak: IPv6 adalah versi baru protokol Internet yang dikembangkan untuk menggantikan IPv4. Alasan utama dikembangkannya IPv6 adalah untuk meningkatkan ruang alamat Internet sehingga mampu mengakomodasi perkembangan jumlah pengguna Internet yang sangat cepat. Penyebaran IPv6 membutuhkan banyak waktu dan usaha, sehingga terdapat suatu masa transisi di mana IPv6 dan IPv4 berjalan bersamaan. Pada masa ini dibutuhkan teknik-teknik yang dapat diimplementasikan oleh IPv6 untuk dapat kompatibel dengan IPv4, teknik-teknik ini disebut mekanisme transisi. Salah satu bentuk mekanisme transisi adalah penerjemahan protokol dari IPv4 ke IPv6 maupun sebaliknya. NAT-PT merupakan salah satu bentuk implementasi dari penerjemahan protokol.
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Judul: Analisis kinerja firewall pada jaringan intranet Departemen Pertanian RI
Abstrak: Lebih dari lima talmn, popularitas Internet dan tcknologi intinya, tclal1 membuat setiap organisasi yang memanfaatkan teknologi informasi mencrapkan utilisasi Internet dalarn berbagai tingkat kebutuhannya. Dengan Internet yang menjadi semakin populer, kcbutuhan akan pengontrolan interaksi rnenjadi suatu critical issue bagi administrator sistern dan jaringan, dan sekuritas suatu private network rnenjadi sangat penting artinya bagi kelangsungan hidup jaringan kornputer tersebut. Intranet adalal1 suatu private network yang memanfaatkan teknologi dan arsitektur Internet. Untuk memastikan proteksi terhadap informasi yang scnsitif, dan memastikan hacker tidak mcrusak sistem komputer dan data, mal<a sistcm sekuritas yang disebut firewall akan memproteksi intranet dari Internet. Teknologi firewall menggunakan kombinasi router, server, dan hardware/software laim1ya untuk mengijinkan orang-orang dalarn intranet menggunakan sumberdaya Internet namun memblokir orang­orang di luar jaringan internal dalam mengakses intranet. Firewall mcrupnkan sistcm yang menerapkan suatu kcbijaksanaan kontrol akscs (access control policy) terhadap jaringan terproteksi. Terdapat di dalamnya dua mekanisme yang prinsipal, yaitu memblokir/mcniadakan lalulintas data (blocking/denying) clan mengijinkan data (permitting/allowing) untuk keluar./masuk jaringan internal, berdasarkan kebijakan perusal1aan.
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Judul: Systematics of Desmos (Annonaceae) in Malesia
Abstrak: Desmos is a woody climbing genus of Annonaceae which has been widely used as traditional medicine in several countries such as China, Indo-China, Thailand, and Peninsular Malaysia to treat dysentery, vertigo, fever, and postpartum. Phylogenetic studies on Desmos showed a close relationship between Desmos and Dasymaschalon. They share similar moniliform monocarpic fruits, but their flowers are different. It has been debated among Annonaceae researchers whether both genera should be treated as the same or distinct genus. Therefore, investigation on the taxonomic delimitation of Desmos species and Dasymaschalon will be necessary. Plastid genome (plastome) identification, leaf epidermal section of Desmos species and Dasymaschalon species, a taxonomic revision of Desmos in Malesia using morphological data, the spatial distribution of Desmos species in Malesia, and morphological and genetic variation in Desmos chinensis population using ISSR marker were used to investigate taxonomic delimitation of Desmos. Plastome study of Desmos chinensis and Dasymaschalon dasymaschalum was carried out to determine the origin, evolution, phylogenomics, and identify marker candidates for Desmos and Dasymaschalon or with other genera in Annonaceae. We discovered that the plastome of Desmos chinensis was circular with the size of 167,677 bp (smaller than Dasymaschalon dasymaschalum), consist of 111 genes, including 78 protein-coding genes, 29 transfer RNAs, and 4 ribosomal RNAs. The plastome showed a typical quadripartite structure, i.e., large single copy (LSC), small single copy (SSC), and two inverted repeats (IRs). The plastome of Dasymaschalon dasymaschalum was 191,488 bp in length, which also exhibited a typical quadripartite structure (LSC, SSC, and two IRs). Desmos chinensis and Dasymaschalon dasymaschalum showed different copies of accD, ndhD, ndhF, rps18, and ycf2. Protein coding genes of rpoB, rpoC1, rbcL, matK, rpl32, infA, and rpl36 were identified based on nucleotide diversity, sequence variability, and parsimony-informative sites. The genes are defined as molecular marker candidates of plastome for phylogenetic, barcoding, and population genetic research. We predicted that Desmos chinensis and Dasymaschalon dasymaschalum separated at ca. 64 million years ago during the Paleocene. Leaf anatomical feature study was carried to support the taxonomic delimitation of interspecific Desmos and intergeneric of Desmos and Dasymaschalon. Leaf anatomy in the paradermal section of 20 taxa (12 species of Desmos, eight species of Dasymaschalon) have been carried out. According to the leaf epidermal section, Desmos and Dasymaschalon are two distinct genera mainly distinguished based on the anticlinal wall undulation of epidermal cells and supported by variation of the crystal type and size. The anticlinal wall undulation of Desmos was almost straight to slightly wavy and never sinuous; meanwhile, Dasymaschalon varies from almost straight to deeply sinusoid. The crystals of Desmos consist of rhombohedral, druse type A, and druse type B crystals, whereas Dasymaschalon has prism, druse type A, druse type B, and druse type C crystals. The recent taxonomic revision using the morphological data was mainly based on the examination of about 1374 specimens from BO, L, WAN, ANDA, SING, SAN, K, P, HUH herbaria. The Desmos species in Malesia consists of eight species: D. acutus, D. chinensis, D. chryseus, D. dunalii, D. pedunculosus, D. subbiglandulosus, two new records: D. lawii and D. macrocarpus, and one
Keyword: Dasymaschalon, Desmoid clade, Magnoliid, plastid genome, phylogenomics analysis