Whileconnectedtotheinternet,you’reapotentialtargetforanarrayofcyberthreats,suchashackers,keyloggers,andTrojansthatattackthroughunpatchedsecurityholes.Afirewallworksasabarrier(or‘shield’)betweenyourcomputerandcyberspace.pfSenseishighlyversatilefirewallsoftware.WiththousandsofenterprisesusingpfSense,itisfastbecomingtheworld'smosttrustedopensourcenetworksecuritysolution.NetworkSecuritywithpfSensebeginswithanintroductiontopfSense,whereyouwillgainanunderstandingofwhatpfSenseis,itskeyfeatures,andadvantages.Next,youwilllearnhowtoconfigurepfSenseasafirewallandcreateandmanagefirewallrules.Asyoumakeyourwaythroughthechapters,youwilltestpfSenseforfailoverandloadbalancingacrossmultiplewideareanetwork(WAN)connections.YouwillthenconfigurepfSensewithOpenVPNforsecureremoteconnectivityandimplementIPsecVPNtunnelswithpfSense.Intheconcludingchapters,you’llunderstandhowtoconfigureandintegratepfSenseasaSquidproxyserver.Bytheendofthisbook,youwillbeabletoleveragethepowerofpfSensetobuildasecurenetwork.