From Ever changing code
Revision as of 12:46, 29 January 2017 by Pio2pio
There are various ways to tap a Wireshark to a linux instance in order to observe live communication. Here below I am utilising named-pipes where tcpdump is redirecting its output to.
Prerequisites - Allow root SSH on Ubuntu Edit /etc/ssh/sshd_config to allow root password logins through ssh. As shown below, comment out #PermitRootLogin without-password and add PermitRootLogin yes.
# Authentication: LoginGraceTime 120 #PermitRootLogin without-password PermitRootLogin yes
Create named pipe on a system A where Wireshark is installed
sudo mkfifo /tmp/remote
Read from the pipe on system A to Wireshark
sudo wireshark -k -i /tmp/remote
Connect to system B as root user to a remote node then redirect tcpdump output to the named pipe over ssh to system A
ssh firstname.lastname@example.org "tcpdump -s 0 -U -n -w - -i eth0 not port 22" > /tmp/remote
! - no, && - and, || - or
No STP, No Arp, No ipv6, no nbns, no DHCP
!stp && !arp && !ipv6 && !dhcpv6 && !nbns && !bootp.option.type == 53