An IP header is header information at the beginning of an Internet Protocol (IP) packet. An IP packet is the smallest message entity exchanged via the...

packet in another IP packet, an outer header is added with Source IP, the entry point of the tunnel, and Destination IP, the exit point of the tunnel. While...

TTL and Header Checksum. In IPv6, the AH protects most of the IPv6 base header, AH itself, non-mutable extension headers after the AH, and the IP payload...

Internet via a virtual private network (VPN) or an IP tunnel, which encapsulates packets, including their headers containing the private addresses, in a protocol...

underlying IPv4 protocol, is 65,507 bytes (65,535 bytes − 8-byte UDP header − 20-byte IP header). Using IPv6 jumbograms it is possible to have UDP datagrams of...

an intermediate router) forwarding an IP datagram first decrements the time to live (TTL) field in the IP header by one. If the resulting TTL is 0, the...

Internet. IP has the task of delivering packets from the source host to the destination host solely based on the IP addresses in the packet headers. For this...

(NAT) is a method of mapping an IP address space into another by modifying network address information in the IP header of packets while they are in transit...

encapsulates each TCP segment into an IP packet by adding a header that includes (among other data) the destination IP address. When the client program on...

This is a list of the IP protocol numbers found in the field Protocol of the IPv4 header and the Next Header field of the IPv6 header. It is an identifier...