var sidebar_align = 'right';
var content_container_margin = parseInt('350px');
var sidebar_width = parseInt('330px');
what does this command do ?
tcpdump | grep xx.xx.xx.xxx
what does it do and when do we need to use it ? Thanks
1) starts tcpdump and pipes output to grep
2) starts tcpdump
for more info see "man tcpdump" and "man grep"
tcpdump is a packet sniffer, so the first command would display all packet headers coming from or going to (basically containing string) xx.xx.xx.xx.
The second for will display all packet headers coming in or out of your host. That's a lot of data.