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Running head:TYPES OF VPN AND ENCRYPTION TECHNIQUES Types of VPN and Encryption Techniques Name of the Student Name of the University Author Note
TYPES OF VPN AND ENCRYPTION TECHNIQUES 1 Summary As per several researches conducted thus far, VPNs are found to play an important role in securing networks of organizations. The report evaluates SSL and IPsec VPN mechanisms and investigates SSL VPN implementations along with the authentication and encryption involved. First, the report presents the literature review on SSL and IPsec VPN. Then the report proceeds to answer the various questions regarding the investigation of SSL VPN used by a website. After mentioning the attacks to remote access, the report ends with concluding notes.
TYPES OF VPN AND ENCRYPTION TECHNIQUES 2 Introduction The report tries to highlight how important VPNs are in securing network infrastructuresoforganizations.ThisreportevaluatesSSLandIPsecVPN mechanismsandinvestigatesSSLVPNimplementationsalongwiththe authenticationandencryptioninvolved.Thereportstartsbypresentingthe literature review on SSL and IPsec VPN. Then the report shows and discusses of SSL VPN use by a website with the help of screenshots and similarly show use of digital signatures and SHA encryptions. The report also talks about SSL VPN client options and remote database access with SSL VPN. Then the SSL attacks and attacks to remote access get discussed after which the report ends with concluding notes. A. Literature Review A VPN or Virtual Private Network is an application or service that serves to protect privacy of users as also increase overall security against cyber-attacks over the Internet . VPNs is used to connect two computers in a secure and private manner through the internet. VPNs are designed for providing secure, encrypted tunnels for transmitting data with remote users from the company network. The IPsec VPN is a functionality of the IP layer protocol which enables transmission of encrypted packets of all kinds of protocols be it TCP, UDP or ICMP without getting modified .Internet Key Exchange or IKE is the IPsec or Internet Protocol Security’s standard protocol that gets used for ensuring secure VPN negotiations as well as remote network access. SSL refers to the application layer protocol that is used for protecting HTTP transactionsandisalsousedforpurposeslikePOP3andIMAP.SSLisonly compatiblewithapplicationsthatrunusingtheTCPprotocolthoughthe applications need to be modified to run with SSL. SSL makes use of four key protocols namely the handshake protocol, change cipher spec protocol, alert protocol and application data protocol. The Cisco Adaptive Security Appliance or ASA makes use of IPsec for LAN to LAN VPN connection and provides options to use IPsec for client to LAN VPN connections . While establishing the tunnel, two peers negotiate the security associations governing the authentications, encryptions, encapsulations, and key
TYPES OF VPN AND ENCRYPTION TECHNIQUES 3 managementprocesses.Suchnegotiationsincludetwophasesone-tunnel establishment (IKE SA) and two – traffic governance within tunnel (IPsec SA). Cisco AnyConnect can support multiple connections on mobile devices by addressing various secure gateways and VPN tunnels . Connection entries identify the secure gateway address from the fully qualified domain name that is IP address, as also the tunnel URL if needed. Thus, this VPN can protect from rapid proliferation of mobile devices on a daily basis. B. Authentication and Access Control 1.Analyse and write report on how the browser ensures that it is communicating to the right server. Please visit awebsiteandaddscreenshotsalsohighlightingthe related part. How SSL and TLS provide authentication? The web browser and the web servers work in tandem to operate on aclient- server basis. In the field of computer networking, client-server system refers to the standardized method to design applications in which data gets stored on central locations that is the servers and are efficiently shared among a range of computers called clients as per the requests received. Every web browser act as a client which requests information from the websites that is web servers hosting the website.
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