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PENGAMANAN PAYLOAD Voip BERBASIS ASTERISK DENGAN PROTOKOL SRTP MENGGUNAKAN TWINKLE

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PENGAMANAN PAYLOAD VoIP BERBASIS ASTERISK DENGAN PROTOKOL SRTP MENGGUNAKAN TWINKLE Oleh: MUHARTANTO E 103091029610 PROGRAM STUDI TEKNIK INFORMATIKA FAKULTAS SAIS DAN TEKNOLOGI UNIVERSITAS ISLAM NEGERI SYARIF HIDAYATULLAH JAKARTA 2010 M/1431 H i PENGAMANAN PAYLOAD VoIP BERBASIS ASTERISK DENGAN PROTOKOL SRTP MENGGUNAKAN TWINKLE Skripsi Diajukan untuk Memenuhi Persyaratan Memperoleh Gelar Sarjana Komputer Pada Fakultas Sains dan Teknologi Universitas Islam Negeri Syarif Hidayatullah Jakarta Oleh: MUHARTANTO E 103091029610 PROGRAM STUDI TEKNIK INFORMATIKA FAKULTAS SAIS DAN TEKNOLOGI UNIVERSITAS ISLAM NEGERI SYARIF HIDAYATULLAH JAKARTA 2010 M/1431 H ii PENGAMANAN PAYLOAD VoIP BERBASIS ASTERISK DENGAN PROTOKOL SRTP MENGGUNAKAN TWINKLE Skripsi Sebagai salah satu syarat untuk memperoleh gelar Sarjana Komputer Fakultas Sains dan Teknologi Universitas Islam Negeri Syarif Hidayatullah Jakarta Oleh: MUHARTANTO E 103091029610 Menyetujui, Pembimbing I, Pembimbing II, Arini, MT Zulfiandri, MMSI NIP. 197601312009012001 NIP. 197001302005011003 Mengetahui, Ketua Program Studi Teknik Informatika Yusuf Durrachman, MIT NIP. 197105222006041002 iii PROGRAM STUDI TEKNIK INFORMATIKA FAKULTAS SAINS DAN TEKONOLOGI UIN SYARIF HIDAYATULLAH JAKARTA Dengan ini menyatakan bahwa skripsi yang ditulis oleh : Nama : Muhartanto E NIM : 103091029610 Fakultas : Sains dan Teknologi Program Studi : Teknik Informatika Judul Skripsi : Pengamanan Payload VoIP Berbasis Asterisk Dengan Protokol SRTP Menggunakan Twinkle. Dapat diterima sebagai syarat kelulusan untuk memperoleh gelar Sarjana Komputer pada Program Studi Teknik Informatika, Fakultas Sains dan Teknologi, Universitas Islam Negeri Syarif Hidayatullah Jakarta. Jakarta, Agustus 2010 Menyetujui, Dosen Pembimbing Dosen Pembimbing I Dosen Pembimbing II Arini, MT Zulfiandri, MMSI NIP. 19760131 200901 2 001 NIP. 19700130 200501 1 003 Mengetahui, Dekan Fakultas Sains & Teknologi Ketua Prodi Teknik Informatika DR. Syopiansyah Jaya Putra, M.Sis Yusuf Durrachman, MIT NIP. 19680117 200112 1 001 NIP. 19710522 200604 1 002 iv PENGESAHAN UJIAN Skripsi berjudul “Pengamanan Payload VoIP Berbasis Asterisk Dengan Protokol SRTP Mengunakan Twinkle” yang ditulis oleh Muhartanto Esafullah, NIM 103091029610 telah diuji dan dinyatakan lulus dalam Sidang Munaqosyah Program Studi Teknik Informatika, Fakultas Sains dan Teknologi, Universitas Islam Negeri Syarif Hidayatullah Jakarta pada hari Senin, tanggal 6 September 2010. Skripsi ini telah diterima sebagai salah satu syarat untuk memperoleh gelar Sarjana Strata Satu (S1) Program Studi Teknik Informatika. Jakarta, September 2010 Tim Penguji, Penguji I, Penguji II, Andrew Fiade, M.Kom Herlino Nanang, MT NIP. 19731209 2005011 1 002 Mengetahui, Dekan Fakultas Sains dan Teknologi Ketua Prodi Teknik Informatika DR. Syopiansyah Jaya Putra, MSis Yusuf Durrachman, MIT NIP. 19680117 200112 1 001 NIP. 19710522 200604 1 002 v PERNYATAAN DENGAN INI SAYA MENYATAKAN BAHWA SKRIPSI INI BENAR- BENAR HASIL KARYA SENDIRI YANG BELUM PERNAH DIAJUKAN SEBAGAI SKRIPSI ATAU KARYA ILMIAH PADA PERGURUAN TINGGI ATAUPUN LEMBAGA MANAPUN. Jakarta, Agustus 2010 MUHARTANTO E 103091029610 vi ABSTRAK Muhartanto E - 103091029610, Pengamanan Payload VoIP Berbasis Asterisk Dengan Protokol SRTP Menggunakan Twinkle. Dibawah bimbingan ARINI dan ZULFIANDRI. Perkembangan teknologi komputer saat ini semakin pesat penggunaannya, antara lain penggunaan komunikasi lewat internet. Salah satunya adalah menggunakan jaringan Voice Over Internet Protocol (VoIP). Komunikasi VoIP menggunakan protokol Real Time Protocol (RTP) mengirimkan payload data melewati sebuah jaringan Internet Protocol (IP). Komunikasi tersebut keamanannya belum terjamin, sehingga informasi payload yang ditransmisikan dapat ditangkap dan dibaca. Karena itu diimplementasikan protokol SRTP yang dapat menenkripsi payload. Peneliti menggunakan metode Rapid Application Development (RAD) dalam pengembangan sistemnya, yang terdiri dari fase menentukan syarat-syarat dan tujuan informasi, fase perancangan, fase konstruksi, dan fase pelaksanaan. Hasil pengujian implementasi SRTP pada server Asterisk dan client Twinkle, payload yang ditransmisikan berhasil dienkripsi sehingga terjamin proses confidentiality dan integrity. Pengembangan aplikasi ini selanjutnya dapat ditambahkan pengamanan pada tingkat network seperti IPSec atau TLS (Transport Layer Security). Kata Kunci : VoIP, SRTP, Payload, Asterisk, Twinkle, RAD. vii KATA PENGANTAR Puji serta syukur kami panjatkan ke Hadirat Allah SWT karena atas berkat dan rahmat-Nya, peneliti dapat menyusun dan menyelesaikan skripsi ini. Adapun judul dari skripsi ini adalah “Pengamanan Payload VoIP berbasis Asterisk Dengan Protokol SRTP Menggunakan Twinkle ”. Penyusunan skripsi ini tidak mungkin dapat peneliti laksanakan dengan baik tanpa bantuan dari berbagai pihak yang terkait. Untuk itu peneliti ingin mengucapkan banyak terima kasih secara khusus kepada beberapa pihak, yaitu: 1. DR. Syopiansyah Jaya Putra, M.Sis, selaku Dekan Fakultas Sains dan Teknologi UIN Syarif Hidayatullah Jakarta. 2. Yusuf Durrachman, MIT, selaku Ketua Program Studi Teknik Informatika dan Viva Arifin, MMSi, selaku Sekretaris Program Studi Teknik Informatika. 3. Arini, MT dan Zulfiandri, MMSI selaku Dosen Pembimbing, yang telah memberikan bimbingan, waktu dan perhatiannya dalam penyusunan skripsi ini. 4. Seluruh Dosen Teknik Informatika yang tidak dapat peneliti sebutkan satu persatu yang telah memberikan ilmu dan bimbingannya selama peneliti menyelesaikan studi di Teknik Informatika. 5. Seluruh staff Jurusan TI/SI dan staff Akademik FST yang telah membantu peneliti dalam masa perkuliahan. viii Peneliti sadar masih banyak sekali kekurangan dari skripsi ini, dan peneliti terbuka terhadap segala saran dan kritik yang membangun. Akhir kata peneliti mempersembahkan skripsi ini dengan segala kelebihan dan kekurangannya, semoga dapat bermanfaat bagi kita semua, amien. Tangerang, Agustus 2010 Muhartanto E 103091029610 ix LEMBAR PERSEMBAHAN Skripsi ini peneliti persembahkan kepada beberapa pihak yang telah memberi dukungan baik berupa dukungan moril maupun materil, yaitu: 1. Kedua orang tua, serta adik-adik yang tak henti-hentinya memberikan dukungan baik moril maupun materiil bagi peneliti dalam menjalani hidup ini. 2. Teman-teman dari Prodi Teknik Informatika angkatan 2003 khususnya kelas D (Bahtiar, Ali, Rijal,.Syukur, Wildan, Ba’i, Rulan, Gun-gun, Erwin, Harry, Aida, Diah, Prilia, Yuni, Desi, Ratih, Lela, Mimi, Ma’ul, Shidiq, Syamsul, Hafizs, Adam, Putro, Fahmi, Teddy dan Giri) yang telah melewatkan waktu bersama selama masa kuliah. 3. Teman-teman seperjuangan penyusunan skripsi TI 2003 kelas A, B & C. 4. Teman-teman dari masa SMU, Zaki, Toni, Aidil, Fany. 5. Teman-teman kosan, Pribadi Muslim, Eko “Petir”, Papa Zaki “Ridwan”, Agus, Fahrudin. Dan kepada Seluruh pihak dan teman-teman peneliti yang lain yang tidak bisa disebutkan namanya satu per satu yang telah memberi dukungan kepada peneliti sehingga skripsi ini dapat terselesaikan dengan baik. Jakarta Agustus 2010 Muhartanto E 103091029610 x xi DAFTAR ISI Halaman Sampul ......................................................................................... i Halaman Judul.............................................................................................. ii Lembar Pengesahan Pembimbing ................................................................. iii Surat Keterangan ........................................................................................ iv Lembar Pengesahan Ujian .......................................................................... v Lembar Pernyataan ..................................................................................... vi Abstrak ........................................................................................................ vii Kata Pengantar ............................................................................................. viii Lembar Persembahan ................................................................................... x Daftar Isi ..................................................................................................... xii Daftar Gambar ............................................................................................ xvii Daftar Tabel ................................................................................................ xx Daftar Lampiran .......................................................................................... xxi Daftar Istilah ............................................................................................... xxii BAB I PENDAHULUAN 1.1 Latar Belakang Masalah ...................................................... 1 1.2 Rumusan Masalah ................................................................ 2 1.3 Batasan Masalah .................................................................. 2 1.4 Tujuan Penelitian ................................................................. 3 1.5 Manfaat Penulisan ............................................................... 3 xii 1.6 Metode Penelitian ............................................................... 4 1.7 Sistematika Penulisan ......................................................... 5 BAB II LANDASAN TEORI 2.1 Keamanan Paket Data .......................................................... 7 2.1.1 Keamanan Komputer ................................................. 8 2.1.2 Paket Data ................................................................. 10 2.1.3 Aspek-aspek Keamanan Komputer ...........................
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  • Denial of Service Detection and Mitigation for SIP Communincation Networks

    Denial of Service Detection and Mitigation for SIP Communincation Networks

    Denial-of-Service Detection and Mitigation for SIP Communication Networks vorgelegt von Diplom-Informatiker Sven Ehlert Von der Fakult¨atIV - Elektrotechnik und Informatik der Technischen Universit¨atBerlin zur Erlangung des akademischen Grades Doktor der Ingenieurwissenschaften Dr.-Ing. genehmigte Dissertation Promotionsausschuss: Vorsitzender: Prof. Dr. Jean-Pierre Seifert Pr¨uferder Dissertation: 1. Prof. Dr. Thomas Magedanz 2. Prof. Dr. Erwin Rathgeb Tag der wissenschaftlichen Aussprache: 13.10.2009 Berlin 2009 D 83 Abstract The Session Initiation Protocol (SIP) is the multimedia communication pro- tocol of the future. Used for Voice-over-IP (VoIP), Internet Multimedia Subsystem (IMS) and Internet Protocol Television (IPTV), its concepts are based on mature and open standards and its use is increasing rapidly within recent years. However, with its acceptance as a mainstream communica- tion platform, security concerns become ever more important for users and service providers. In this thesis we identify different attacks on SIP-based networks with the focus on Denial-of-Service attacks (DoS) flooding attacks. We evaluate SIP infrastructure for DoS attack possibilities and demonstrate a completely new attack which utilises a combination of the SIP and Domain Name Service (DNS) system. We propose three different DoS detection and mitigation schemes, including one to handle this particular SIP DNS attack. We also provide a first step into Distributed DoS mitigation by introducing a firewall pinholing scheme. Distributed DoS mitigation is only marginally addressed by current research works. We also evaluate the requirements for a self-sufficient and scalable SIP security framework, where attack countermea- sures can be evaluated and tested. We use this framework for our solutions and validate their effectiveness for DoS mitigation.