- 2010
-
2007
- March
-
February
-
How to extract SYN packets with tcpdump
02/21/07
tcpdump
# tcpdump -ne dst port 80 and 'tcp[13] & 2 == 2'
This way effectively filtering only SYN packets on port 80.
# tcpdump -c 30000 -ne dst port 80 and 'tcp[13] & 2 == 2' | awk '{print $11}' | cut -d. -f1|sort | uniq -c -
WPA for Ubuntu
02/18/07
It is a bit tricky (took me almost two days :), but basically this is the procedure:
- configure your wireless card
(using ndiswrapper is described in another article)
in case your wifi card is identified as wlan0 add the following to /etc/network/interfaces
auto wlan -
Make BASH update your terminal window title after logon
02/18/07
~/.bash_profile
This code would do the trick:
if [ "$TERM" = "xterm" ] ; then
export PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}\007"'
else
unset PROMPT_COMMAND
fi
After logon th -
FreeBSD rc.firewall fix for blacklisted ip support
02/18/07
/etc/rc.firewall
Add this code at the end of the set_loopback function:
if [ -f "${banned_ips}" ]; then
for i in `cat ${banned_ips} | grep -vE "^#"`; do
echo ${fwcmd} add deny ip from ${i} to me
-
How to extract SYN packets with tcpdump