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...
2 KB (236 words) - 16:31, 25 March 2025
IPv4 (redirect from IPv4 Header)
first header field in an IP packet is the Version field. For IPv4, this is always equal to 4. Internet Header Length (IHL): 4 bits The IPv4 header is variable...
42 KB (5,616 words) - 11:14, 4 June 2025
User Datagram Protocol (redirect from IPv6 pseudo header)
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...
22 KB (2,789 words) - 14:22, 6 May 2025
Internet Protocol (redirect from IP protocol)
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...
22 KB (2,595 words) - 13:19, 15 May 2025
IPsec (redirect from Authentication Header)
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...
44 KB (5,337 words) - 03:03, 15 May 2025
Network address translation (redirect from IP-masquerading)
(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...
44 KB (5,558 words) - 10:01, 17 June 2025
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...
5 KB (565 words) - 11:13, 14 January 2025
Internet Control Message Protocol (section Header)
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...
30 KB (2,867 words) - 05:44, 14 May 2025
Transmission Control Protocol (redirect from TCP header)
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...
109 KB (12,941 words) - 18:55, 17 June 2025
Jacobson TCP/IP Header Compression is a data compression protocol described in RFC 1144, specifically designed by Van Jacobson to improve TCP/IP performance...
1 KB (170 words) - 16:45, 6 October 2024
X-Forwarded-For (redirect from XFF header)
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...
6 KB (744 words) - 04:04, 29 October 2023
Internet checksum (redirect from IPv4 header checksum)
error is detected. IP header checksum does not check for the correct order of 16-bit values within the header. Frame check sequence Header check sequence...
5 KB (713 words) - 19:24, 18 January 2025
Serial Line Internet Protocol (redirect from Serial Line IP)
SLIP with header compression is called Compressed SLIP (CSLIP). The compression algorithm used in CSLIP is known as Van Jacobson TCP/IP Header Compression...
6 KB (710 words) - 08:00, 4 April 2025
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...
20 KB (2,599 words) - 12:12, 8 November 2024
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...
7 KB (803 words) - 08:39, 15 June 2025
Generic Stream Encapsulation (section GSE Header)
VLANs, etc.) Transparency to network layer functions, including IP encryption and IP header compression. Support of several addressing modes. In addition...
12 KB (1,187 words) - 14:36, 13 August 2024
list of the IP protocol numbers found in the 8-bit Protocol field of the IPv4 header and the 8-bit Next Header field of the IPv6 header. It is an identifier...
23 KB (152 words) - 15:12, 29 May 2025
Differentiated services (redirect from IP Differentiated services)
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...
20 KB (2,422 words) - 14:19, 6 April 2025
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...
5 KB (835 words) - 08:41, 4 June 2025
control plane data; header compression; ciphering; integrity protection. The header compression technique can be based on either IP header compression (RFC...
2 KB (243 words) - 07:05, 23 November 2021
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...
17 KB (2,373 words) - 07:21, 6 February 2025
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...
9 KB (1,163 words) - 14:09, 14 June 2025
Protocol, see IP header. In data packets sent by wireless communication, and in sectors of data stored on magnetic media, typically the header begins with...
2 KB (325 words) - 16:30, 27 February 2025
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...
24 KB (2,837 words) - 11:45, 25 February 2025
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...
11 KB (1,607 words) - 15:07, 2 January 2025
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...
6 KB (564 words) - 09:35, 12 April 2025
Type of service (redirect from IP precedence)
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...
9 KB (1,051 words) - 18:23, 31 March 2025
HTTP header fields are a list of strings sent and received by both the client program and server on every HTTP request and response. These headers are...
53 KB (2,491 words) - 19:46, 6 June 2025
Robust Header Compression (ROHC) is a standardized method to compress the IP, UDP, UDP-Lite, RTP, and TCP headers of Internet packets. In streaming applications...
10 KB (1,395 words) - 10:00, 31 August 2023
Control Message Protocol (ICMP) header is considered, and 84 bytes including Internet Protocol (IP) version 4 header. However, any IPv4 packet (including...
8 KB (1,090 words) - 19:40, 2 June 2025