Posts tagged wireshark

Run wireshark as non-root user
posted on 2014-08-05 10:23:00

To run wireshark as a non-root user, do this (as root, or use sudo):

apt-get install wireshark   
dpkg-reconfigure wireshark-common
usermod -a -G wireshark USER
# logout and login for new environment, for testing do:
groups USER  ## should lack group wireshark
su USER
groups USER  ## should now have group wireshark and thus work
wireshark
Wireshark and tcpdump cheatsheet
posted on 2014-07-03 22:14:34

Wireshark and tcpdump are essential tools when analyzing network traffic. These may help:

Wireshark

tcpdump

More tcpdumpinfo here.

Tcpdump is helpful to know, even if you use just wireshark, since capture filters use tcpdump syntax, not the one wireshark uses for its display filters. See here or here.

Wireshark: Filter packets by number / selection
posted on 2014-06-29 10:17:04

To filter wireshark packets from a certain interval, there are two approaches:

  1. Mark the frames you want to display with Ctrl-M and use display filter frame.marked == 1 (Or use 0 for that matter, if you want to hide the marked ones)
  2. Use less-than/greater-than options with frame.number as a display filter: frame.number > 14000 && frame.number < 15000 will show only the packets with id's 14k to 15k.

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