| 
                                    
                                        gptkbp:instanceOf
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:network_protocol
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:alternativeTo
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:MPLS
                                        
                                         
                                    
                                        
                                            gptkb:IP-in-IP_Tunneling
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:block
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Firewalls
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:canBe
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Carrier-of-carrier_VPNs
                                        
                                         
                                    
                                        
                                            gptkb:IPv4_over_IPv6_tunneling
                                        
                                         
                                    
                                        
                                            
                                            IPv6 over IPv4 tunneling
                                        
                                        
                                         
                                    
                                        
                                            
                                            Bypassing geo-restrictions
                                        
                                        
                                         
                                    
                                        
                                            
                                            Connecting disjoint networks
                                        
                                        
                                         
                                    
                                        
                                            
                                            Connecting remote offices
                                        
                                        
                                         
                                    
                                        
                                            
                                            Dynamic routing protocols
                                        
                                        
                                         
                                    
                                        
                                            
                                            Overlay networks
                                        
                                        
                                         
                                    
                                        
                                            
                                            Testing network protocols
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:canBeBypassedBy
                                    
                                 | 
                                
                                    
                                        
                                            
                                            NAT (with additional configuration)
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:combines
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:IPsec
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:compatibleWith
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Encryption
                                        
                                        
                                         
                                    
                                        
                                            
                                            Authentication
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:definedIn
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:RFC_2784
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:developedBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Cisco_Systems
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:example
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Cisco_IOS
                                        
                                         
                                    
                                        
                                            gptkb:Juniper_Junos
                                        
                                         
                                    
                                        
                                            gptkb:Linux_ip_gre_module
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:fullName
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Generic_Routing_Encapsulation_Tunnels
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:hasTransport
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Non-IP protocols
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:headerField
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Checksum
                                        
                                        
                                         
                                    
                                        
                                            
                                            Key
                                        
                                        
                                         
                                    
                                        
                                            
                                            Sequence Number
                                        
                                        
                                         
                                    
                                        
                                            
                                            Protocol Type
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:headerSize
                                    
                                 | 
                                
                                    
                                        
                                            
                                            24 bytes
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:monitors
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Network analyzers
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:notRecommendedFor
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Sensitive data without encryption
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:operatesIn
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Layer_3
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:OSIModelLayer
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Network_Layer
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:purpose
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Encapsulate network layer protocols
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:requires
                                    
                                 | 
                                
                                    
                                        
                                            
                                            IP connectivity between endpoints
                                        
                                        
                                         
                                    
                                        
                                            
                                            Static configuration
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:supports
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Multicast traffic
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:supportsProtocol
                                    
                                 | 
                                
                                    
                                        
                                            
                                            47
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:surroundedBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:IPv4
                                        
                                         
                                    
                                        
                                            gptkb:IPv6
                                        
                                         
                                    
                                        
                                            gptkb:IPX
                                        
                                         
                                    
                                        
                                            gptkb:AppleTalk
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:usedFor
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:VPNs
                                        
                                         
                                    
                                        
                                            
                                            Site-to-site connections
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:usedIn
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Enterprise_WANs
                                        
                                         
                                    
                                        
                                            
                                            Cloud networking
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:vulnerableTo
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Spoofing
                                        
                                        
                                         
                                    
                                        
                                            
                                            Packet sniffing
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsParent
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Layer_2_VPN
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsLayer
                                    
                                 | 
                                
                                    
                                        
                                            
                                            6
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        https://www.w3.org/2000/01/rdf-schema#label
                                    
                                 | 
                                
                                    
                                        
                                            
                                            GRE Tunnels
                                        
                                        
                                         
                                    
                                 |