
<h2>Useful Linux Commands</h2>

1. Who's listening on port 80?

  sudo lsof -t -i :80

2. Who's talking to a remote port 11300?

  netstat -pal | grep 11300

3. Incoming web requests

  ngrep -q "POST|GET"
  ngrep -q "POST|GET" | egrep "(POST|GET) /"

4. Incoming and outgoing web traffic

  tcpdump "port 80" -X -s 1024

5. Who's blocking port access?

  /sbin/iptables -L
  /sbin/iptables -F    # flush iptables

6. Who's the main www process?

  ps -e | grep www

7. Start gdb by process name

  gdb --pid=`ps -eo pid,comm | grep www | cut -d' ' -f1`