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...

the inner IP header Total Length: 16 bits This field is the length of the encapsulated IP packet (including Outer IP Header, Inner IP Header, IP Payload)...

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...

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...

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...

(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...

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...

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...

The X-Forwarded-For (XFF) HTTP header field is a common method for identifying the originating IP address of a client connecting to a web server through...

Fragments flags in the IP header are used for fragmentation and reassembly of IP packets.: 24 : 9  If a receiving host receives a fragmented IP packet, it has...

carried in the IP packet header, and represents the 16-bit result of summation of the header words. The IPv6 protocol does not use header checksums. Its...

network management protocol used on Internet Protocol (IP) networks for automatically assigning IP addresses and other communication parameters to devices...

data because "Total Length" field of IP header records the total size including the header and data. An IP header is at least 20 bytes long, so the maximum...

segment. It does not count the TCP header or the IP header (unlike, for example, the MTU for IP datagrams).: §3.7.1  The IP datagram containing a TCP segment...

Jacobson TCP/IP Header Compression is a data compression protocol described in RFC 1144, specifically designed by Van Jacobson to improve TCP/IP performance...

an IP packet that can be transmitted without fragmentation over a given medium. The size of an IP packet includes IP headers but excludes headers from...

SLIP with header compression is called Compressed SLIP (CSLIP). The compression algorithm used in CSLIP is known as Van Jacobson TCP/IP Header Compression...

point (DSCP) in the 6-bit differentiated services field (DS field) in the IP header for packet classification purposes. The DS field, together with the ECN...

not. The Type of Service field in the IP header was originally defined in RFC 791, and has been interpreted for IP Precedence and ToS ever since. The definition...

Internet Protocol (IP). The protocol specifies that each IP packet must have a header which contains (among other things) the IP address of the sender...

Type field (the IP header is not included). For IPv6 this is calculated from the ICMP message, prepended with an IPv6 pseudo-header. Header Data (32 bits)...

TCP/IP networks signal congestion by dropping packets. When ECN is successfully negotiated, an ECN-aware router may set a mark in the IP header instead...

the IP suite, the contents of a web page are encapsulated with an HTTP header, then by a TCP header, an IP header, and, finally, by a frame header and...

datagram headers to have no checksum (indicated by 0 in the header field), IPv6 requires a checksum in UDP headers. IPv6 routers do not perform IP fragmentation...

X-Originating-IP (not to be confused with X-Forwarded-For) email header field is a de facto standard for identifying the originating IP address of a client...

packets towards the remote address through an IP tunnel by encapsulating the datagram with a new IP header using the care of address of the mobile node...

protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behavior. Devices...

control plane data; header compression; ciphering; integrity protection. The header compression technique can be based on either IP header compression (RFC...