Home›Check Point›Check Point NAT reachability checkerCheck Point NAT reachability checkerWhy a correct-looking NAT delivers nothing. Works out whether anything will answer ARP for the translated address, which is usually where the traffic disappears.Documentation (Markdown)Security & WAFDocumentation →ShareHow the NAT is configuredManual rule in the NAT rule baseAutomatic, from the objectNAT typeStatic (publishes an address)Hide (outbound only)Translated addressGateway interface facing the trafficPrefix length of that interfaceGlobal Properties: Automatic ARP configurationEnabled (default)DisabledExampleClearArithmetic in your browser. No ARP is sent and no gateway is contacted.ReferencesCheck Point Security Management Administration Guide: Automatic and Manual NAT RulesCheck Point CheckMates: proxy ARP behaviour for automatic NAT at policy installWWT: complete guide to Check Point Network Address Translation