{"product_id":"9780134171814","title":"VPNs Illustrated: Tunnels, VPNs, and IPsec","description":"\u003cp\u003eVirtual private networks (VPNs) based on the Internet instead of the traditional leased lines offer organizations of all sizes the promise of a low-cost, secure electronic network. However, using the Internet to carry sensitive information can present serious privacy and security problems. By explaining how VPNs actually work, networking expert Jon Snader shows software engineers and network administrators how to use tunneling, authentication, and encryption to create safe, effective VPNs for any environment. \u003c\/p\u003e \u003cp\u003eUsing an example-driven approach, \u003cb\u003e \u003ci\u003eVPNs Illustrated\u003c\/i\u003e \u003c\/b\u003e explores how tunnels and VPNs function by observing their behavior \"on the wire.\" By learning to read and interpret various network traces, such as those produced by tcpdump, readers will be able to better understand and troubleshoot VPN and network behavior. \u003c\/p\u003e \u003cp\u003eSpecific topics covered include:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eBlock and stream symmetric ciphers, such as AES and RC4; and asymmetric ciphers, such as RSA and EIGamal\u003c\/li\u003e \u003cli\u003eMessage authentication codes, including HMACs\u003c\/li\u003e \u003cli\u003eTunneling technologies based on gtunnel\u003c\/li\u003e \u003cli\u003eSSL protocol for building network-to-network VPNs\u003c\/li\u003e \u003cli\u003eSSH protocols as drop-in replacements for telnet, ftp, and the BSD r-commands\u003c\/li\u003e \u003cli\u003eLightweight VPNs, including VTun, CIPE, tinc, and OpenVPN\u003c\/li\u003e \u003cli\u003eIPsec, including its Authentication Header (AH) protocol, Encapsulating Security Payload (ESP), and IKE (the key management protocol)\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003ePacked with details, the text can be used as a handbook describing the functions of the protocols and the message formats that they use. Source code is available for download, and an appendix covers publicly available software that can be used to build tunnels and analyze traffic flow. \u003c\/p\u003e \u003cp\u003e \u003cb\u003e \u003ci\u003eVPNs Illustrated\u003c\/i\u003e \u003c\/b\u003e gives you the knowledge of tunneling and VPN technology you need to understand existing VPN implementations and successfully create your own.\u003c\/p\u003e  \u003cbr\u003e \u003cbr\u003e","brand":"Pearson Education","offers":[{"title":"Default Title","offer_id":47119527477488,"sku":"9780134171814","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9780134171814_p0.jpg?v=1763641435","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9780134171814","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}