¿Puede traceroute utilizar TCP?

Can traceroute use TCP?

Unlike the more traditional traceroute which sends either UDP or ICMP ECHO packets, TCP Traceroute is using TCP packets and, thus, can bypass the most common firewall filters.

TCP Traceroute TCPTraceroute is a traceroute implementation that uses TCP packets instead of UDP or ICMP packets to send its probes. When it receives a response, the tcptraceroute program sends a packet with a RST flag to close the connection.

The Trace TCP/IP Route (TRCTCPRTE) command, also known as TRACEROUTE, traces the route of IP packets to a user-specified destination system. Each system along the route is referred to as a hop. You can trace all hops along the route or specify the starting and ending hops to be traced.

On a Windows system, traceroute uses ICMP. As with ping , traceroute can be blocked by not responding to the protocol/port being used. Traceroute displays the ICMP message’s source address as the name of the hop and moves on to the next hop.

On Unix-like operating systems, traceroute sends, by default, a sequence of User Datagram Protocol (UDP) packets, with destination port numbers ranging from 33434 to 33534; the implementations of traceroute shipped with Linux, FreeBSD, NetBSD, OpenBSD, DragonFly BSD, and macOS include an option to use ICMP Echo Request …

Let’s step through the process of transmitting a packet with TCP/IP.

1. Step 1: Establish connection. When two computers want to send data to each other over TCP, they first need to establish a connection using a three-way handshake.
2. Step 2: Send packets of data.
3. Step 3: Close the connection.

What is traceroute used for? Traceroute is helpful for figuring out the routing hops data has to go through, as well as response delays as it travels across nodes, which are what send the data toward its destination. Traceroute also enables you to locate points of failure.

A traceroute works by sending Internet Control Message Protocol (ICMP) packets, and every router involved in transferring the data gets these packets. The ICMP packets provide information about whether the routers used in the transmission are able to effectively transfer the data.

The ping command can be related to these TCP and UDP protocols but it does not use TCP or UDP. This may be even asked you in an interview or certificate exam or class exam. The ping command uses the ICMP protocol.

Last year I needed to figure out a way to get the following information with Python: get the route table, capture the data from pinging a series of IPs, run tracert and get information about the NIC (s) installed.

Traceroute is a tool/technique to list all the routers that your packets go through to reach a target. The technique is to send series of packets to the target with Time to Live (TTL) set in such a way that each router on the path will have to notify you of the death of the packet.

The technique is to send series of packets to the target with Time to Live (TTL) set in such a way that each router on the path will have to notify you of the death of the packet. The traceroute technique is based on the way the IP protocol is designed. TTL value in IP header is seen as hop limit.

Or this implementation by Christian Kreibich. It can parse traceroute info into a series of hop objects, each consisting of one or more probe results, likewise, object instances. Also, string formatting produces familiar traceroute output.