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  2. traceroute - Wikipedia

    en.wikipedia.org/wiki/Traceroute

    Some traceroute implementations use TCP packets, such as tcptraceroute and layer four traceroute (lft). PathPing is a utility introduced with Windows NT that combines ping and traceroute functionality. MTR is an enhanced version of ICMP traceroute available for Unix-like and Windows systems. The various implementations of traceroute all rely on ...

  3. Internet Control Message Protocol - Wikipedia

    en.wikipedia.org/wiki/Internet_Control_Message...

    The ICMP header starts after the IPv4 header and is identified by its protocol number, 1. [6] All ICMP packets have an eight-byte header and variable-sized data section. The first four bytes of the header have fixed format, while the last four bytes depend on the type and code of the ICMP packet.

  4. MTR (software) - Wikipedia

    en.wikipedia.org/wiki/MTR_(software)

    My traceroute, originally named Matt's traceroute (MTR), is a computer program that combines the functions of the traceroute and ping programs in one network diagnostic tool. [ 2 ] MTR probes routers on the route path by limiting the number of hops individual packets may traverse, and listening to responses of their expiry.

  5. Layer four traceroute - Wikipedia

    en.wikipedia.org/wiki/Layer_four_traceroute

    Layer Four Traceroute (LFT) is a fast, multi-protocol traceroute engine, that also implements numerous other features including AS number lookups through regional Internet registries and other reliable sources, Loose Source Routing, firewall and load balancer detection, etc. LFT is best known for its use by network security practitioners to trace a route to a destination host through many ...

  6. ping (networking utility) - Wikipedia

    en.wikipedia.org/wiki/Ping_(networking_utility)

    Ping operates by means of Internet Control Message Protocol (ICMP) packets. Pinging involves sending an ICMP echo request to the target host and waiting for an ICMP echo reply . The program reports errors, packet loss , and a statistical summary of the results, typically including the minimum, maximum, the mean round-trip times, and standard ...

  7. Talk:Traceroute - Wikipedia

    en.wikipedia.org/wiki/Talk:Traceroute

    For these reasons, while traceroute was widely used during the early days of Internet, by the 1990s many Internet sites have blocked traceroute requests. This is somewhat deceptive, as there's no way to directly block traceroute requests, since traceroute just uses one of the standard network protocols (usually UDP, ICMP, or TCP).

  8. Network utility - Wikipedia

    en.wikipedia.org/wiki/Network_utilities

    ping, ping a host to check connectivity (reports packet loss and latency, uses ICMP). traceroute shows the series of successive systems a packet goes through en route to its destination on a network. It works by sending packets with sequential TTLs which generate ICMP TTL-exceeded messages from the hosts the packet passes through.

  9. ICMP tunnel - Wikipedia

    en.wikipedia.org/wiki/ICMP_tunnel

    ICMP tunneling works by injecting arbitrary data into an echo packet sent to a remote computer. The remote computer replies in the same manner, injecting an answer into another ICMP packet and sending it back. The client performs all communication using ICMP echo request packets, while the proxy uses echo reply packets.