Misc: Difference between revisions

695 bytes removed ,  7 years ago
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m (Protected "Misc" ([Edit=Allow only logged in users] (indefinite) [Move=Allow only logged in users] (indefinite) [Delete=Allow only logged in users] (indefinite)))
m (→‎Wireshark: remove)
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[[Category:Misc]]
=Wireshark=
 
==Non-Root Capture==
sudo apt-get install libcap2-bin
sudo groupadd wireshark
sudo usermod -a -G wireshark kirat
newgrp wireshark
sudo chgrp wireshark /usr/bin/dumpcap
sudo chmod 750 /usr/bin/dumpcap
sudo setcap cap_net_raw,cap_net_admin=eip /usr/bin/dumpcap
 
Verification:
getcap /usr/bin/dumpcap => /usr/bin/dumpcap = cap_net_admin,cap_net_raw+eip
 
If still unable to capture:
sudo dpkg-reconfigure wireshark-common
sudo chmod +x /usr/bin/dumpcap
 
==Tshark==
apt-get install tshark
tshark -r lotsapackets.cap -R dns -w dns.cap
tshark -r lotsapackets.cap -R "dns or tcp.port==80" -w web.cap
capinfos web.cap
editcap -c 50000 lotsapackets.cap fewerpackets.cap
 
=Network=