Notes from Violent Python

1. The European Network and Information Security Agency provides an excellent resource for analyzing network traffic. They provide a live DVD ISO image that contains several network captures and exercises. You can download a copy from http://www.enisa.europa.eu/activities/cert/support/exercise/live-dvd-iso-images. 

2. NMap can be used in python via a library.

3. Pexpect(python) can be used for automating interactive applications - for e.g.   

4. ftplib for brute force ftp user credentials.

5. Metasploit as a penetration testing tool.

6. wigle.net for finding lat/long for a wifi router   

Python simple script to connect to a host/port and get response.

__author__ = 'admin'

import socket

s = socket.socket()

s.settimeout(3)

s.connect(("server.com",21))

ans  = s.recv(1024)

print ans

MySql db restore from dump failing

Solution : increase max_allowed_packet

Details :

Recently, I had a strange problem. While doing source dbdump.sql (dbdump.sql was generated by mysqldump) - initial data was loaded fine but after a while data was not being restored properly due to foreign key checks failing.

The dump file was disabling foreign key checks at the top and enabling again at the bottom  - so it was highly surprising.

To debug this I wrote a php script which executed queries line by line from the dump. I observed that it failed at a query where the data being inserted was huge which made database connection go away. And when it came back the foreign key check was enabled again - which in turn made a lot of things fail.

So I increased max_allowed_packet to 64M in my.ini and restarted mysql server. Solved.

vim deleting lines matching non numeric characters

:g!/^[0-9]*$/d

merging two blocks in vim

http://stackoverflow.com/questions/10760326/merge-multiple-lines-two-blocks-in-vim

debugging eclipse app from command line

go to the path of the class file, let's A.class
and run

java -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=1044 A

And in eclipse launch a Remote Java Application Debug configuration
with port 1044

Open source voip android

http://en.wikipedia.org/wiki/Linphone

http://en.wikipedia.org/wiki/CSipSimple

http://en.wikipedia.org/wiki/Sipdroid