Kombinasi Port Knocking Dan VPN Guna Pengamanan Akses Secure Shell Pada Cloud Computing

atmadji, Ery Setiyawan Jullev and Susanto, Bekti Maryuni and Hotima, Khusnul (2019) Kombinasi Port Knocking Dan VPN Guna Pengamanan Akses Secure Shell Pada Cloud Computing. Teknomatika: Jurnal Informatika dan Komputer, 12 (1). pp. 8-13. ISSN 1979-7656

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Abstract

One form of cloud computing that is commonly used is virtualization, vitualization technology allows sharing resources on one server computer so will reduce the cost of implementing an information system. Data security issues are one aspect that has become a focus in developing information systems and cloud computing, two security threats in cloud computing, namely data loss or leakage and account or service piracy. In order to prevent those two security loopholes, several security models were made, one of which was port knocking by using VPN networks which was a development of network security to prevent data theft using port 22. Using VPN can reduce packet tapping from outside parties who want to retrieve data, and utilize iptables can reject an IP address that is not registered in accessing port 22 and performing a remote server. Port knocking is used as the client entrance to do a remote server through port 22 using a tap configured by the server. This mechanism allows the client to access port 22 even though port 22 is closed, because port knocking also has the principle "open the port if the client requires and close the port again if the client is finished". Thus using IP from tun vpn server and port knocking will make it difficult for outsiders to access the server.

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