Detecting Load Balancers

While penetration testing we might require to find the load balancers on the site, it's pretty complicated to find the no of load balancers,
there is a good tool that comes in handy, it's halberd

installation
------------
# tar -xzvf halberd-0.2.3.ta.gz
# python setup.py install

running:
--------
# halberd www.site.com
or
# halberd