{"product_id":"books-linux-firewalls-by-robert-ziegler","title":"Linux Firewalls","description":"Guiding readers through the basic steps of designing and implementing a packet-filtering firewall, this text also discusses disabling unnecessary services, selecting services to make public, and identifying dangerous local services that need to be protected behind a firewall.","brand":"World of Books ","offers":[{"title":"Default Title","offer_id":54419081691409,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9780735710993.jpg?v=1787568039","url":"https:\/\/www.worldofbooks.com\/products\/books-linux-firewalls-by-robert-ziegler","provider":"World of Books ","version":"1.0","type":"link"}