incrediBILL - 3:58 am on Jul 31, 2012 (gmt 0)
it can be from any person on any range
True, it may come from any range, but in the examples above it was from airtelbroadband.in
Doesn't mean you won't need to block other infiltrations, but I've been happily blocking that range for ages to keep the nasty things coming from it off my servers.
It's like blocking China, Russia, Nigeria, Vietnam, Ukraine, etc. If you don't do any business with those countries you're much safer from spam, hacking attempts, etc. if you don't let those areas of known high volume activity have access to your servers in the first place. The problem with airtelbroadband.in is that their modem pool randomly sends just as many good visitors as it does hackers, spammers and scrapers so ultimately I blocked them.
Then you deal with the rest :)