FedoraForum.org - Fedora Support Forums and Community
Results 1 to 3 of 3
  1. #1
    Join Date
    May 2018
    Location
    Canada
    Posts
    23
    Linux (Fedora) Firefox 60.0

    Need Help While Using tcpdump Command

    I am using tcpdump output and I see this entry:


    4:56:27.742567 IP 174.143.140.137.80 > 192.168.2.21.45704: Flags [S.], seq 3555324792, ack 2292208597, win 5792, options [mss 1452,sackOK,TS val 593134436 ecr 91197600,nop,wscale 6], length 0


    Can anyone tell me what it means?

    Thanks

  2. #2
    Join Date
    Dec 2012
    Location
    santa barbara, CA
    Posts
    888
    Linux (Fedora) Firefox 60.0

    Re: Need Help While Using tcpdump Command

    4:56:27.742567 I think timestamp since boot
    IP 174.143.140.137 is sending a packet on port 80
    to IP: 192.168.2.21 on remote port 45704 , which tells me that the 192.168.2.21 requested an HTTP connection from 174.143.140.137 (and the port 45704) is the outgoing connection port in your local machine, which has ip: 192.168.2.21

    length 0 at the end means it probably didn't receive anything.

    try doing: tcpdump -s 192
    "monsters John ... monsters from the ID..."
    "ma vule teva maar gul nol naya"

  3. #3
    Join Date
    May 2018
    Location
    Canada
    Posts
    23
    Linux (Fedora) Firefox 60.0

    Re: Need Help While Using tcpdump Command

    Thanks so much. That helps a lot.

Similar Threads

  1. Tcpdump
    By mamehmood in forum Servers & Networking
    Replies: 1
    Last Post: 19th February 2009, 01:56 AM
  2. Tcpdump...??
    By sheridon in forum Security and Privacy
    Replies: 3
    Last Post: 18th June 2006, 05:58 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •